From b71946ce8b1b7ce9ca3d26c554d4a9862aabd577 Mon Sep 17 00:00:00 2001 From: Rami Santina Date: Mon, 20 Jun 2011 14:27:56 +0300 Subject: Handle curved triangles overlaps. subdivde overlaping triangles for the case when 2 triangles intersect either by vextex of Traingle A in Triangle B or an edge in A intersects an edge in B VectorUtil: -added tri2triIntersection test (not optimized) -added seg2segIntersection test (not optimized) --- .../com/jogamp/graph/curve/OutlineShape.java | 1215 ++++++++++---------- .../classes/com/jogamp/graph/geom/Outline.java | 36 +- .../classes/com/jogamp/graph/math/VectorUtil.java | 134 ++- .../graph/font/typecast/TypecastRenderer.java | 441 ++++--- 4 files changed, 973 insertions(+), 853 deletions(-) (limited to 'src/jogl') diff --git a/src/jogl/classes/com/jogamp/graph/curve/OutlineShape.java b/src/jogl/classes/com/jogamp/graph/curve/OutlineShape.java index 7d0aa0a18..025a998d8 100755 --- a/src/jogl/classes/com/jogamp/graph/curve/OutlineShape.java +++ b/src/jogl/classes/com/jogamp/graph/curve/OutlineShape.java @@ -1,586 +1,629 @@ -/** - * Copyright 2010 JogAmp Community. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without modification, are - * permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, this list of - * conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright notice, this list - * of conditions and the following disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND - * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF - * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * The views and conclusions contained in the software and documentation are those of the - * authors and should not be interpreted as representing official policies, either expressed - * or implied, of JogAmp Community. - */ -package com.jogamp.graph.curve; - -import java.util.ArrayList; -import java.util.Collections; - -import com.jogamp.graph.curve.tess.Triangulation; -import com.jogamp.graph.curve.tess.Triangulator; -import com.jogamp.graph.geom.AABBox; -import com.jogamp.graph.geom.Outline; -import com.jogamp.graph.geom.Triangle; -import com.jogamp.graph.geom.Vertex; -import com.jogamp.graph.math.VectorUtil; - - -/** A Generic shape objects which is defined by a list of Outlines. - * This Shape can be transformed to Triangulations. - * The list of triangles generated are render-able by a Region object. - * The triangulation produced by this Shape will define the - * closed region defined by the outlines. - * - * One or more OutlineShape Object can be associated to a region - * this is left as a high-level representation of the Objects. For - * optimizations, flexibility requirements for future features. - * - *

- * Example to creating an Outline Shape: - * 
-      addVertex(...)
-      addVertex(...)
-      addVertex(...)
-      addEmptyOutline()
-      addVertex(...)
-      addVertex(...)
-      addVertex(...)
- *
- * - * The above will create two outlines each with three vertices. By adding these two outlines to - * the OutlineShape, we are stating that the combination of the two outlines represent the shape. - *
- * - * To specify that the shape is curved at a region, the on-curve flag should be set to false - * for the vertex that is in the middle of the curved region (if the curved region is defined by 3 - * vertices (quadratic curve). - *
- * In case the curved region is defined by 4 or more vertices the middle vertices should both have - * the on-curve flag set to false. - * - *
Example:
- * 
-      addVertex(0,0, true);
-      addVertex(0,1, false);
-      addVertex(1,1, false);
-      addVertex(1,0, true);
- *
- * - * The above snippet defines a cubic nurbs curve where (0,1 and 1,1) - * do not belong to the final rendered shape. - * - * Implementation Notes:
- * - * - * @see Outline - * @see Region - */ -public class OutlineShape implements Comparable { - /** - * Outline's vertices have undefined state until transformed. - */ - public enum VerticesState { - UNDEFINED(0), QUADRATIC_NURBS(1); - - public final int state; - - VerticesState(int state){ - this.state = state; - } - } - - public static final int DIRTY_BOUNDS = 1 << 0; - - private final Vertex.Factory vertexFactory; - private VerticesState outlineState; - - /** The list of {@link Outline}s that are part of this - * outline shape. - */ - private ArrayList outlines; - private AABBox bbox; - - /** dirty bits DIRTY_BOUNDS */ - private int dirtyBits; - - /** Create a new Outline based Shape - */ - public OutlineShape(Vertex.Factory factory) { - this.vertexFactory = factory; - this.outlines = new ArrayList(3); - this.outlines.add(new Outline()); - this.outlineState = VerticesState.UNDEFINED; - this.bbox = new AABBox(); - this.dirtyBits = 0; - } - - /** Clears all data and reset all states as if this instance was newly created */ - public void clear() { - outlines.clear(); - outlines.add(new Outline()); - outlineState = VerticesState.UNDEFINED; - bbox.reset(); - dirtyBits = 0; - } - - /** Returns the associated vertex factory of this outline shape - * @return Vertex.Factory object - */ - public final Vertex.Factory vertexFactory() { return vertexFactory; } - - public int getOutlineNumber() { - return outlines.size(); - } - - /** Add a new empty {@link Outline} - * to the end of this shape's outline list. - *

If the {@link #getLastOutline()} is empty already, no new one will be added.

- * - * After a call to this function all new vertices added - * will belong to the new outline - */ - public void addEmptyOutline() { - if( !getLastOutline().isEmpty() ) { - outlines.add(new Outline()); - } - } - - /** Appends the {@link Outline} element to the end, - * ensuring a clean tail. - * - *

A clean tail is ensured, no double empty Outlines are produced - * and a pre-existing empty outline will be replaced with the given one.

- * - * @param outline Outline object to be added - * @throws NullPointerException if the {@link Outline} element is null - */ - public void addOutline(Outline outline) throws NullPointerException { - addOutline(outlines.size(), outline); - } - - /** Insert the {@link Outline} element at the given {@code position}. - * - *

If the {@code position} indicates the end of this list, - * a clean tail is ensured, no double empty Outlines are produced - * and a pre-existing empty outline will be replaced with the given one.

- * - * @param position of the added Outline - * @param outline Outline object to be added - * @throws NullPointerException if the {@link Outline} element is null - * @throws IndexOutOfBoundsException if position is out of range (position < 0 || position > getOutlineNumber()) - */ - public void addOutline(int position, Outline outline) throws NullPointerException, IndexOutOfBoundsException { - if (null == outline) { - throw new NullPointerException("outline is null"); - } - if( outlines.size() == position ) { - final Outline lastOutline = getLastOutline(); - if( outline.isEmpty() && lastOutline.isEmpty() ) { - return; - } - if( lastOutline.isEmpty() ) { - outlines.set(position-1, outline); - if( 0 == ( dirtyBits & DIRTY_BOUNDS ) ) { - bbox.resize(outline.getBounds()); - } - return; - } - } - outlines.add(position, outline); - if( 0 == ( dirtyBits & DIRTY_BOUNDS ) ) { - bbox.resize(outline.getBounds()); - } - } - - /** Insert the {@link OutlineShape} elements of type {@link Outline}, .. at the end of this shape, - * using {@link #addOutline(Outline)} for each element. - *

Closes the current last outline via {@link #closeLastOutline()} before adding the new ones.

- * @param outlineShape OutlineShape elements to be added. - * @throws NullPointerException if the {@link OutlineShape} is null - * @throws IndexOutOfBoundsException if position is out of range (position < 0 || position > getOutlineNumber()) - */ - public void addOutlineShape(OutlineShape outlineShape) throws NullPointerException { - if (null == outlineShape) { - throw new NullPointerException("OutlineShape is null"); - } - closeLastOutline(); - for(int i=0; iSets the bounding box dirty, hence a next call to {@link #getBounds()} will validate it.

- * - * @param position of the replaced Outline - * @param outline replacement Outline object - * @throws NullPointerException if the {@link Outline} element is null - * @throws IndexOutOfBoundsException if position is out of range (position < 0 || position >= getOutlineNumber()) - */ - public void setOutline(int position, Outline outline) throws NullPointerException, IndexOutOfBoundsException { - if (null == outline) { - throw new NullPointerException("outline is null"); - } - outlines.set(position, outline); - dirtyBits |= DIRTY_BOUNDS; - } - - /** Removes the {@link Outline} element at the given {@code position}. - *

Sets the bounding box dirty, hence a next call to {@link #getBounds()} will validate it.

- * - * @param position of the to be removed Outline - * @throws IndexOutOfBoundsException if position is out of range (position < 0 || position >= getOutlineNumber()) - */ - public final Outline removeOutline(int position) throws IndexOutOfBoundsException { - dirtyBits |= DIRTY_BOUNDS; - return outlines.remove(position); - } - - /** Get the last added outline to the list - * of outlines that define the shape - * @return the last outline - */ - public final Outline getLastOutline() { - return outlines.get(outlines.size()-1); - } - - /** @return the {@code Outline} at {@code position} - * @throws IndexOutOfBoundsException if position is out of range (position < 0 || position >= getOutlineNumber()) - */ - public Outline getOutline(int position) throws IndexOutOfBoundsException { - return outlines.get(position); - } - - /** Adds a vertex to the last open outline in the - * shape. - * @param v the vertex to be added to the OutlineShape - */ - public final void addVertex(Vertex v) { - final Outline lo = getLastOutline(); - lo.addVertex(v); - if( 0 == ( dirtyBits & DIRTY_BOUNDS ) ) { - bbox.resize(lo.getBounds()); - } - } - - /** Adds a vertex to the last open outline in the shape. - * at {@code position} - * @param position indx at which the vertex will be added - * @param v the vertex to be added to the OutlineShape - */ - public final void addVertex(int position, Vertex v) { - final Outline lo = getLastOutline(); - lo.addVertex(position, v); - if( 0 == ( dirtyBits & DIRTY_BOUNDS ) ) { - bbox.resize(lo.getBounds()); - } - } - - /** Add a 2D {@link Vertex} to the last outline by defining the coordniate attribute - * of the vertex. The 2D vertex will be represented as Z=0. - * - * @param x the x coordinate - * @param y the y coordniate - * @param onCurve flag if this vertex is on the final curve or defines a curved region - * of the shape around this vertex. - */ - public final void addVertex(float x, float y, boolean onCurve) { - addVertex(vertexFactory.create(x, y, 0f, onCurve)); - } - - /** Add a 3D {@link Vertex} to the last outline by defining the coordniate attribute - * of the vertex. - * @param x the x coordinate - * @param y the y coordinate - * @param z the z coordinate - * @param onCurve flag if this vertex is on the final curve or defines a curved region - * of the shape around this vertex. - */ - public final void addVertex(float x, float y, float z, boolean onCurve) { - addVertex(vertexFactory.create(x, y, z, onCurve)); - } - - /** Add a vertex to the last outline by passing a float array and specifying the - * offset and length in which. The attributes of the vertex are located. - * The attributes should be continuous (stride = 0). - * Attributes which value are not set (when length less than 3) - * are set implicitly to zero. - * @param coordsBuffer the coordinate array where the vertex attributes are to be picked from - * @param offset the offset in the buffer to the x coordinate - * @param length the number of attributes to pick from the buffer (maximum 3) - * @param onCurve flag if this vertex is on the final curve or defines a curved region - * of the shape around this vertex. - */ - public final void addVertex(float[] coordsBuffer, int offset, int length, boolean onCurve) { - addVertex(vertexFactory.create(coordsBuffer, offset, length, onCurve)); - } - - /** Closes the last outline in the shape. - *

If last vertex is not equal to first vertex. - * A new temp vertex is added at the end which - * is equal to the first.

- */ - public void closeLastOutline() { - getLastOutline().setClosed(true); - } - - /** - * @return the outline's vertices state, {@link OutlineShape.VerticesState} - */ - public final VerticesState getOutlineState() { - return outlineState; - } - - /** Ensure the outlines represent - * the specified destinationType. - * - * @param destinationType the target outline's vertices state. Currently only {@link OutlineShape.VerticesState#QUADRATIC_NURBS} are supported. - */ - public void transformOutlines(VerticesState destinationType) { - if(outlineState != destinationType){ - if(destinationType == VerticesState.QUADRATIC_NURBS){ - transformOutlines2Quadratic(); - checkOverlaps(); - } else { - throw new IllegalStateException("destinationType "+destinationType.name()+" not supported (currently "+outlineState.name()+")"); - } - } - } - - private boolean checkOverlaps() { - boolean edited = false; - int count = getOutlineNumber(); - for (int cc = 0; cc < count; cc++) { - final Outline outline = getOutline(cc); - int vertexCount = outline.getVertexCount(); - for(int i=0; i < vertexCount; i++) { - final Vertex currentVertex = outline.getVertex(i); - if ( !currentVertex.isOnCurve()) { - final Vertex nextV = outline.getVertex((i+1)%vertexCount); - final Vertex prevV = outline.getVertex((i-1)%vertexCount); - if(checkTriOverlaps(prevV, currentVertex, nextV)) { - //subdivide triangle into two - float[] v1 = VectorUtil.mid(prevV.getCoord(), currentVertex.getCoord()); - float[] v3 = VectorUtil.mid(currentVertex.getCoord(), nextV.getCoord()); - float[] v2 = VectorUtil.mid(v1, v3); - - //drop off-curve vertex to image on the curve - currentVertex.setCoord(v2, 0, 3); - currentVertex.setOnCurve(true); - - outline.addVertex(i, vertexFactory.create(v1, 0, 3, false)); - i+=2; - vertexCount++; - outline.addVertex(i, vertexFactory.create(v3, 0, 3, false)); - vertexCount++; - i++; - - edited = true; - } - } - } - } - return edited; - } - - private boolean checkTriOverlaps(Vertex a, Vertex b, Vertex c) { - int count = getOutlineNumber(); - for (int cc = 0; cc < count; cc++) { - final Outline outline = getOutline(cc); - int vertexCount = outline.getVertexCount(); - for(int i=0; i < vertexCount; i++) { - final Vertex current = outline.getVertex(i); - if(current == a || current == b || current == c){ - continue; - } - if(VectorUtil.vertexInTriangle(a.getCoord(), b.getCoord(), c.getCoord(), current.getCoord())){ - return true; - } - } - } - return false; - } - - private void transformOutlines2Quadratic() { - int count = getOutlineNumber(); - for (int cc = 0; cc < count; cc++) { - final Outline outline = getOutline(cc); - int vertexCount = outline.getVertexCount(); - - for(int i=0; i < vertexCount; i++) { - final Vertex currentVertex = outline.getVertex(i); - final Vertex nextVertex = outline.getVertex((i+1)%vertexCount); - if ( !currentVertex.isOnCurve() && !nextVertex.isOnCurve() ) { - final float[] newCoords = VectorUtil.mid(currentVertex.getCoord(), - nextVertex.getCoord()); - final Vertex v = vertexFactory.create(newCoords, 0, 3, true); - i++; - vertexCount++; - outline.addVertex(i, v); - } - } - if(vertexCount <= 0) { - outlines.remove(outline); - cc--; - count--; - continue; - } - - if( vertexCount > 0 ) { - if(VectorUtil.checkEquality(outline.getVertex(0).getCoord(), - outline.getLastVertex().getCoord())) { - outline.removeVertex(vertexCount-1); - } - } - } - outlineState = VerticesState.QUADRATIC_NURBS; - } - - private void generateVertexIds() { - int maxVertexId = 0; - for(int i=0; i vertices = outlines.get(i).getVertices(); - for(int pos=0; pos getVertices() { - ArrayList vertices = new ArrayList(); - for(int i=0; i triangulate() { - if(outlines.size() == 0){ - return null; - } - sortOutlines(); - generateVertexIds(); - - Triangulator triangulator2d = Triangulation.create(); - for(int index = 0; index triangles = triangulator2d.generate(); - triangulator2d.reset(); - - return triangles; - } - - /** Sort the outlines from large - * to small depending on the AABox - */ - private void sortOutlines() { - Collections.sort(outlines); - Collections.reverse(outlines); - } - - /** Compare two outline shapes with Bounding Box area - * as criteria. - * @see java.lang.Comparable#compareTo(java.lang.Object) - */ - public final int compareTo(OutlineShape outline) { - float size = getBounds().getSize(); - float newSize = outline.getBounds().getSize(); - if(size < newSize){ - return -1; - } - else if(size > newSize){ - return 1; - } - return 0; - } - - private final void validateBoundingBox() { - dirtyBits &= ~DIRTY_BOUNDS; - bbox.reset(); - for (int i=0; i=0; i--) { - if( ! getOutline(i).equals( o.getOutline(i) ) ) { - return false; - } - } - return true; - } - - /** - * @return deep clone of this OutlineShape w/o Region - */ - public OutlineShape clone() { - OutlineShape o; - try { - o = (OutlineShape) super.clone(); - } catch (CloneNotSupportedException e) { throw new InternalError(); } - o.bbox = bbox.clone(); - o.outlines = new ArrayList(outlines.size()); - for(int i=0; i
+ * Example to creating an Outline Shape: + * 
+      addVertex(...)
+      addVertex(...)
+      addVertex(...)
+      addEmptyOutline()
+      addVertex(...)
+      addVertex(...)
+      addVertex(...)
+ *
+ * + * The above will create two outlines each with three vertices. By adding these two outlines to + * the OutlineShape, we are stating that the combination of the two outlines represent the shape. + *
+ * + * To specify that the shape is curved at a region, the on-curve flag should be set to false + * for the vertex that is in the middle of the curved region (if the curved region is defined by 3 + * vertices (quadratic curve). + *
+ * In case the curved region is defined by 4 or more vertices the middle vertices should both have + * the on-curve flag set to false. + * + *
Example:
+ * 
+      addVertex(0,0, true);
+      addVertex(0,1, false);
+      addVertex(1,1, false);
+      addVertex(1,0, true);
+ *
+ * + * The above snippet defines a cubic nurbs curve where (0,1 and 1,1) + * do not belong to the final rendered shape. + * + * Implementation Notes:
+ *
    + *
  • The first vertex of any outline belonging to the shape should be on-curve
    • + *
  • Intersections between off-curved parts of the outline is not handled
    • + *
+ * + * @see Outline + * @see Region + */ +public class OutlineShape implements Comparable { + /** + * Outline's vertices have undefined state until transformed. + */ + public enum VerticesState { + UNDEFINED(0), QUADRATIC_NURBS(1); + + public final int state; + + VerticesState(int state){ + this.state = state; + } + } + + public static final int DIRTY_BOUNDS = 1 << 0; + + private final Vertex.Factory vertexFactory; + private VerticesState outlineState; + + /** The list of {@link Outline}s that are part of this + * outline shape. + */ + private ArrayList outlines; + private AABBox bbox; + + /** dirty bits DIRTY_BOUNDS */ + private int dirtyBits; + + /** Create a new Outline based Shape + */ + public OutlineShape(Vertex.Factory factory) { + this.vertexFactory = factory; + this.outlines = new ArrayList(3); + this.outlines.add(new Outline()); + this.outlineState = VerticesState.UNDEFINED; + this.bbox = new AABBox(); + this.dirtyBits = 0; + } + + /** Clears all data and reset all states as if this instance was newly created */ + public void clear() { + outlines.clear(); + outlines.add(new Outline()); + outlineState = VerticesState.UNDEFINED; + bbox.reset(); + dirtyBits = 0; + } + + /** Returns the associated vertex factory of this outline shape + * @return Vertex.Factory object + */ + public final Vertex.Factory vertexFactory() { return vertexFactory; } + + public int getOutlineNumber() { + return outlines.size(); + } + + /** Add a new empty {@link Outline} + * to the end of this shape's outline list. + *

If the {@link #getLastOutline()} is empty already, no new one will be added.

+ * + * After a call to this function all new vertices added + * will belong to the new outline + */ + public void addEmptyOutline() { + if( !getLastOutline().isEmpty() ) { + outlines.add(new Outline()); + } + } + + /** Appends the {@link Outline} element to the end, + * ensuring a clean tail. + * + *

A clean tail is ensured, no double empty Outlines are produced + * and a pre-existing empty outline will be replaced with the given one.

+ * + * @param outline Outline object to be added + * @throws NullPointerException if the {@link Outline} element is null + */ + public void addOutline(Outline outline) throws NullPointerException { + addOutline(outlines.size(), outline); + } + + /** Insert the {@link Outline} element at the given {@code position}. + * + *

If the {@code position} indicates the end of this list, + * a clean tail is ensured, no double empty Outlines are produced + * and a pre-existing empty outline will be replaced with the given one.

+ * + * @param position of the added Outline + * @param outline Outline object to be added + * @throws NullPointerException if the {@link Outline} element is null + * @throws IndexOutOfBoundsException if position is out of range (position < 0 || position > getOutlineNumber()) + */ + public void addOutline(int position, Outline outline) throws NullPointerException, IndexOutOfBoundsException { + if (null == outline) { + throw new NullPointerException("outline is null"); + } + if( outlines.size() == position ) { + final Outline lastOutline = getLastOutline(); + if( outline.isEmpty() && lastOutline.isEmpty() ) { + return; + } + if( lastOutline.isEmpty() ) { + outlines.set(position-1, outline); + if( 0 == ( dirtyBits & DIRTY_BOUNDS ) ) { + bbox.resize(outline.getBounds()); + } + return; + } + } + outlines.add(position, outline); + if( 0 == ( dirtyBits & DIRTY_BOUNDS ) ) { + bbox.resize(outline.getBounds()); + } + } + + /** Insert the {@link OutlineShape} elements of type {@link Outline}, .. at the end of this shape, + * using {@link #addOutline(Outline)} for each element. + *

Closes the current last outline via {@link #closeLastOutline()} before adding the new ones.

+ * @param outlineShape OutlineShape elements to be added. + * @throws NullPointerException if the {@link OutlineShape} is null + * @throws IndexOutOfBoundsException if position is out of range (position < 0 || position > getOutlineNumber()) + */ + public void addOutlineShape(OutlineShape outlineShape) throws NullPointerException { + if (null == outlineShape) { + throw new NullPointerException("OutlineShape is null"); + } + closeLastOutline(); + for(int i=0; iSets the bounding box dirty, hence a next call to {@link #getBounds()} will validate it.

+ * + * @param position of the replaced Outline + * @param outline replacement Outline object + * @throws NullPointerException if the {@link Outline} element is null + * @throws IndexOutOfBoundsException if position is out of range (position < 0 || position >= getOutlineNumber()) + */ + public void setOutline(int position, Outline outline) throws NullPointerException, IndexOutOfBoundsException { + if (null == outline) { + throw new NullPointerException("outline is null"); + } + outlines.set(position, outline); + dirtyBits |= DIRTY_BOUNDS; + } + + /** Removes the {@link Outline} element at the given {@code position}. + *

Sets the bounding box dirty, hence a next call to {@link #getBounds()} will validate it.

+ * + * @param position of the to be removed Outline + * @throws IndexOutOfBoundsException if position is out of range (position < 0 || position >= getOutlineNumber()) + */ + public final Outline removeOutline(int position) throws IndexOutOfBoundsException { + dirtyBits |= DIRTY_BOUNDS; + return outlines.remove(position); + } + + /** Get the last added outline to the list + * of outlines that define the shape + * @return the last outline + */ + public final Outline getLastOutline() { + return outlines.get(outlines.size()-1); + } + + /** @return the {@code Outline} at {@code position} + * @throws IndexOutOfBoundsException if position is out of range (position < 0 || position >= getOutlineNumber()) + */ + public Outline getOutline(int position) throws IndexOutOfBoundsException { + return outlines.get(position); + } + + /** Adds a vertex to the last open outline in the + * shape. + * @param v the vertex to be added to the OutlineShape + */ + public final void addVertex(Vertex v) { + final Outline lo = getLastOutline(); + lo.addVertex(v); + if( 0 == ( dirtyBits & DIRTY_BOUNDS ) ) { + bbox.resize(lo.getBounds()); + } + } + + /** Adds a vertex to the last open outline in the shape. + * at {@code position} + * @param position indx at which the vertex will be added + * @param v the vertex to be added to the OutlineShape + */ + public final void addVertex(int position, Vertex v) { + final Outline lo = getLastOutline(); + lo.addVertex(position, v); + if( 0 == ( dirtyBits & DIRTY_BOUNDS ) ) { + bbox.resize(lo.getBounds()); + } + } + + /** Add a 2D {@link Vertex} to the last outline by defining the coordniate attribute + * of the vertex. The 2D vertex will be represented as Z=0. + * + * @param x the x coordinate + * @param y the y coordniate + * @param onCurve flag if this vertex is on the final curve or defines a curved region + * of the shape around this vertex. + */ + public final void addVertex(float x, float y, boolean onCurve) { + addVertex(vertexFactory.create(x, y, 0f, onCurve)); + } + + /** Add a 3D {@link Vertex} to the last outline by defining the coordniate attribute + * of the vertex. + * @param x the x coordinate + * @param y the y coordinate + * @param z the z coordinate + * @param onCurve flag if this vertex is on the final curve or defines a curved region + * of the shape around this vertex. + */ + public final void addVertex(float x, float y, float z, boolean onCurve) { + addVertex(vertexFactory.create(x, y, z, onCurve)); + } + + /** Add a vertex to the last outline by passing a float array and specifying the + * offset and length in which. The attributes of the vertex are located. + * The attributes should be continuous (stride = 0). + * Attributes which value are not set (when length less than 3) + * are set implicitly to zero. + * @param coordsBuffer the coordinate array where the vertex attributes are to be picked from + * @param offset the offset in the buffer to the x coordinate + * @param length the number of attributes to pick from the buffer (maximum 3) + * @param onCurve flag if this vertex is on the final curve or defines a curved region + * of the shape around this vertex. + */ + public final void addVertex(float[] coordsBuffer, int offset, int length, boolean onCurve) { + addVertex(vertexFactory.create(coordsBuffer, offset, length, onCurve)); + } + + /** Closes the last outline in the shape. + *

If last vertex is not equal to first vertex. + * A new temp vertex is added at the end which + * is equal to the first.

+ */ + public void closeLastOutline() { + getLastOutline().setClosed(true); + } + + /** + * @return the outline's vertices state, {@link OutlineShape.VerticesState} + */ + public final VerticesState getOutlineState() { + return outlineState; + } + + /** Ensure the outlines represent + * the specified destinationType. + * and removes all overlaps in boundary triangles + * @param destinationType the target outline's vertices state. Currently only + * {@link OutlineShape.VerticesState#QUADRATIC_NURBS} are supported. + */ + public void transformOutlines(VerticesState destinationType) { + if(outlineState != destinationType){ + if(destinationType == VerticesState.QUADRATIC_NURBS){ + transformOutlines2Quadratic(); + checkOverlaps(); + } else { + throw new IllegalStateException("destinationType "+destinationType.name()+" not supported (currently "+outlineState.name()+")"); + } + } + } + + private void subdivideTriangle(final Outline outline, Vertex a, Vertex b, Vertex c, int index){ + float[] v1 = VectorUtil.mid(a.getCoord(), b.getCoord()); + float[] v3 = VectorUtil.mid(b.getCoord(), c.getCoord()); + float[] v2 = VectorUtil.mid(v1, v3); + + //drop off-curve vertex to image on the curve + b.setCoord(v2, 0, 3); + b.setOnCurve(true); + + outline.addVertex(index, vertexFactory.create(v1, 0, 3, false)); + outline.addVertex(index+2, vertexFactory.create(v3, 0, 3, false)); + } + + /** Check overlaps between curved triangles + * first check if any vertex in triangle a is in triangle b + * second check if edges of triangle a intersect segments of triangle b + * if any of the two tests is true we divide current triangle + * and add the other to the list of overlaps + * + * Loop until overlap array is empty. (check only in first pass) + */ + private void checkOverlaps() { + ArrayList overlaps = new ArrayList(3); + int count = getOutlineNumber(); + boolean firstpass = true; + do { + for (int cc = 0; cc < count; cc++) { + final Outline outline = getOutline(cc); + int vertexCount = outline.getVertexCount(); + for(int i=0; i < outline.getVertexCount(); i++) { + final Vertex currentVertex = outline.getVertex(i); + if ( !currentVertex.isOnCurve()) { + final Vertex nextV = outline.getVertex((i+1)%vertexCount); + final Vertex prevV = outline.getVertex((i+vertexCount-1)%vertexCount); + Vertex overlap =null; + + //check for overlap even if already set for subdivision + //ensuring both trianglur overlaps get divided + //for pref. only check in first pass + //second pass to clear the overlaps arrray(reduces precision errors) + if(firstpass) { + overlap = checkTriOverlaps(prevV, currentVertex, nextV); + } + if(overlaps.contains(currentVertex) || overlap != null) { + overlaps.remove(currentVertex); + + subdivideTriangle(outline, prevV, currentVertex, nextV, i); + i+=3; + vertexCount+=2; + + if(overlap != null && !overlap.isOnCurve()) { + if(!overlaps.contains(overlap)) + overlaps.add(overlap); + } + } + } + } + } + firstpass = false; + }while(!overlaps.isEmpty()); + } + + private Vertex checkTriOverlaps(Vertex a, Vertex b, Vertex c) { + int count = getOutlineNumber(); + for (int cc = 0; cc < count; cc++) { + final Outline outline = getOutline(cc); + int vertexCount = outline.getVertexCount(); + for(int i=0; i < vertexCount; i++) { + final Vertex current = outline.getVertex(i); + if(current.isOnCurve() || current == a || current == b || current == c) { + continue; + } + final Vertex nextV = outline.getVertex((i+1)%vertexCount); + final Vertex prevV = outline.getVertex((i+vertexCount-1)%vertexCount); + + //skip neighboring triangles + if(prevV == c || nextV == a) { + continue; + } + + if(VectorUtil.vertexInTriangle(a.getCoord(), b.getCoord(), c.getCoord(), current.getCoord()) + || VectorUtil.vertexInTriangle(a.getCoord(), b.getCoord(), c.getCoord(), nextV.getCoord()) + || VectorUtil.vertexInTriangle(a.getCoord(), b.getCoord(), c.getCoord(), prevV.getCoord())) { + + return current; + } + if(VectorUtil.tri2SegIntersection(a, b, c, prevV, current) + || VectorUtil.tri2SegIntersection(a, b, c, current, nextV) + || VectorUtil.tri2SegIntersection(a, b, c, prevV, nextV)) { + return current; + } + } + } + return null; + } + + private void transformOutlines2Quadratic() { + int count = getOutlineNumber(); + for (int cc = 0; cc < count; cc++) { + final Outline outline = getOutline(cc); + int vertexCount = outline.getVertexCount(); + + for(int i=0; i < vertexCount; i++) { + final Vertex currentVertex = outline.getVertex(i); + final Vertex nextVertex = outline.getVertex((i+1)%vertexCount); + if ( !currentVertex.isOnCurve() && !nextVertex.isOnCurve() ) { + final float[] newCoords = VectorUtil.mid(currentVertex.getCoord(), + nextVertex.getCoord()); + final Vertex v = vertexFactory.create(newCoords, 0, 3, true); + i++; + vertexCount++; + outline.addVertex(i, v); + } + } + if(vertexCount <= 0) { + outlines.remove(outline); + cc--; + count--; + continue; + } + + if( vertexCount > 0 ) { + if(VectorUtil.checkEquality(outline.getVertex(0).getCoord(), + outline.getLastVertex().getCoord())) { + outline.removeVertex(vertexCount-1); + } + } + } + outlineState = VerticesState.QUADRATIC_NURBS; + } + + private void generateVertexIds() { + int maxVertexId = 0; + for(int i=0; i vertices = outlines.get(i).getVertices(); + for(int pos=0; pos getVertices() { + ArrayList vertices = new ArrayList(); + for(int i=0; i triangulate() { + if(outlines.size() == 0){ + return null; + } + sortOutlines(); + generateVertexIds(); + + Triangulator triangulator2d = Triangulation.create(); + for(int index = 0; index triangles = triangulator2d.generate(); + triangulator2d.reset(); + + return triangles; + } + + /** Sort the outlines from large + * to small depending on the AABox + */ + private void sortOutlines() { + Collections.sort(outlines); + Collections.reverse(outlines); + } + + /** Compare two outline shapes with Bounding Box area + * as criteria. + * @see java.lang.Comparable#compareTo(java.lang.Object) + */ + public final int compareTo(OutlineShape outline) { + float size = getBounds().getSize(); + float newSize = outline.getBounds().getSize(); + if(size < newSize){ + return -1; + } + else if(size > newSize){ + return 1; + } + return 0; + } + + private final void validateBoundingBox() { + dirtyBits &= ~DIRTY_BOUNDS; + bbox.reset(); + for (int i=0; i=0; i--) { + if( ! getOutline(i).equals( o.getOutline(i) ) ) { + return false; + } + } + return true; + } + + /** + * @return deep clone of this OutlineShape w/o Region + */ + public OutlineShape clone() { + OutlineShape o; + try { + o = (OutlineShape) super.clone(); + } catch (CloneNotSupportedException e) { throw new InternalError(); } + o.bbox = bbox.clone(); + o.outlines = new ArrayList(outlines.size()); + for(int i=0; i { - + private ArrayList vertices = new ArrayList(3); private boolean closed = false; private AABBox bbox = new AABBox(); private boolean dirtyBBox = false; - + /**Create an outline defined by control vertices. * An outline can contain off Curve vertices which define curved * regions in the outline. */ public Outline() { } - + public final int getVertexCount() { return vertices.size(); } - + /** Appends a vertex to the outline loop/strip. * @param vertex Vertex to be added * @throws NullPointerException if the {@link Vertex} element is null @@ -68,7 +68,7 @@ public class Outline implements Cloneable, Comparable { public final void addVertex(Vertex vertex) throws NullPointerException { addVertex(vertices.size(), vertex); } - + /** Insert the {@link Vertex} element at the given {@code position} to the outline loop/strip. * @param position of the added Vertex * @param vertex Vertex object to be added @@ -84,7 +84,7 @@ public class Outline implements Cloneable, Comparable { bbox.resize(vertex.getX(), vertex.getY(), vertex.getZ()); } } - + /** Replaces the {@link Vertex} element at the given {@code position}. *

Sets the bounding box dirty, hence a next call to {@link #getBounds()} will validate it.

* @@ -100,11 +100,15 @@ public class Outline implements Cloneable, Comparable { vertices.set(position, vertex); dirtyBBox = true; } - + public final Vertex getVertex(int index){ return vertices.get(index); } - + + public int getVertexIndex(Vertex vertex){ + return vertices.indexOf(vertex); + } + /** Removes the {@link Vertex} element at the given {@code position}. *

Sets the bounding box dirty, hence a next call to {@link #getBounds()} will validate it.

* @@ -115,18 +119,18 @@ public class Outline implements Cloneable, Comparable { dirtyBBox = true; return vertices.remove(position); } - + public final boolean isEmpty(){ return (vertices.size() == 0); } - + public final Vertex getLastVertex(){ if(isEmpty()){ return null; } return vertices.get(vertices.size()-1); } - + public final ArrayList getVertices() { return vertices; } @@ -141,7 +145,7 @@ public class Outline implements Cloneable, Comparable { this.vertices = vertices; validateBoundingBox(); } - + public final boolean isClosed() { return closed; } @@ -163,7 +167,7 @@ public class Outline implements Cloneable, Comparable { } } } - + /** Compare two outlines with Bounding Box area * as criteria. * @see java.lang.Comparable#compareTo(java.lang.Object) @@ -179,7 +183,7 @@ public class Outline implements Cloneable, Comparable { } return 0; } - + private final void validateBoundingBox() { dirtyBBox = false; bbox.reset(); @@ -187,7 +191,7 @@ public class Outline implements Cloneable, Comparable { bbox.resize(vertices.get(i).getCoord(), 0); } } - + public final AABBox getBounds() { if (dirtyBBox) { validateBoundingBox(); @@ -220,7 +224,7 @@ public class Outline implements Cloneable, Comparable { } return true; } - + /** * @return deep clone of this Outline */ diff --git a/src/jogl/classes/com/jogamp/graph/math/VectorUtil.java b/src/jogl/classes/com/jogamp/graph/math/VectorUtil.java index 2b4a7fd9d..b1f2023f3 100755 --- a/src/jogl/classes/com/jogamp/graph/math/VectorUtil.java +++ b/src/jogl/classes/com/jogamp/graph/math/VectorUtil.java @@ -44,7 +44,7 @@ public class VectorUtil { this.dir = dir; } } - + public static final int COLLINEAR = 0; /** compute the dot product of two points @@ -88,7 +88,7 @@ public class VectorUtil { newVector[2] = vector[2]*scale; return newVector; } - + /** Adds to vectors * @param v1 vector 1 * @param v2 vector 2 @@ -135,7 +135,7 @@ public class VectorUtil { return out; } - + /** Matrix Vector multiplication * @param rawMatrix column matrix (4x4) * @param vec vector(x,y,z) @@ -151,7 +151,7 @@ public class VectorUtil { return out; } - + /** Calculate the midpoint of two values * @param p1 first value * @param p2 second vale @@ -169,9 +169,9 @@ public class VectorUtil { public static float[] mid(float[] p1, float[] p2) { float[] midPoint = new float[3]; - midPoint[0] = (p1[0] + p2[0])/2.0f; - midPoint[1] = (p1[1] + p2[1])/2.0f; - midPoint[2] = (p1[2] + p2[2])/2.0f; + midPoint[0] = (p1[0] + p2[0])*0.5f; + midPoint[1] = (p1[1] + p2[1])*0.5f; + midPoint[2] = (p1[2] + p2[2])*0.5f; return midPoint; } @@ -206,8 +206,8 @@ public class VectorUtil { public static boolean checkEquality(float[] v1, float[] v2) { if(Float.compare(v1[0], v2[0]) == 0 && - Float.compare(v1[1], v2[1]) == 0 && - Float.compare(v1[2], v2[2]) == 0 ) + Float.compare(v1[1], v2[1]) == 0 && + Float.compare(v1[2], v2[2]) == 0 ) return true; return false; } @@ -220,7 +220,7 @@ public class VectorUtil { public static boolean checkEqualityVec2(float[] v1, float[] v2) { if(Float.compare(v1[0], v2[0]) == 0 && - Float.compare(v1[1], v2[1]) == 0) + Float.compare(v1[1], v2[1]) == 0) return true; return false; } @@ -287,7 +287,7 @@ public class VectorUtil { public static float triArea(Vertex a, Vertex b, Vertex c){ return (b.getX() - a.getX()) * (c.getY() - a.getY()) - (b.getY() - a.getY())*(c.getX() - a.getX()); } - + /** Check if a vertex is in triangle using * barycentric coordinates computation. * @param a first triangle vertex @@ -297,25 +297,25 @@ public class VectorUtil { * @return true if p is in triangle (a, b, c), false otherwise. */ public static boolean vertexInTriangle(float[] a, float[] b, float[] c, float[] p){ - // Compute vectors - float[] ac = computeVector(a, c); //v0 - float[] ab = computeVector(a, b); //v1 - float[] ap = computeVector(a, p); //v2 - - // Compute dot products - float dot00 = dot(ac, ac); - float dot01 = dot(ac, ab); - float dot02 = dot(ac, ap); - float dot11 = dot(ab, ab); - float dot12 = dot(ab, ap); - - // Compute barycentric coordinates - float invDenom = 1 / (dot00 * dot11 - dot01 * dot01); - float u = (dot11 * dot02 - dot01 * dot12) * invDenom; - float v = (dot00 * dot12 - dot01 * dot02) * invDenom; - - // Check if point is in triangle - return (u > 0) && (v > 0) && (u + v < 1); + // Compute vectors + float[] ac = computeVector(a, c); //v0 + float[] ab = computeVector(a, b); //v1 + float[] ap = computeVector(a, p); //v2 + + // Compute dot products + float dot00 = dot(ac, ac); + float dot01 = dot(ac, ab); + float dot02 = dot(ac, ap); + float dot11 = dot(ab, ab); + float dot12 = dot(ab, ap); + + // Compute barycentric coordinates + float invDenom = 1 / (dot00 * dot11 - dot01 * dot01); + float u = (dot11 * dot02 - dot01 * dot12) * invDenom; + float v = (dot00 * dot12 - dot01 * dot02) * invDenom; + + // Check if point is in triangle + return (u >= 0) && (v >= 0) && (u + v < 1); } /** Check if points are in ccw order @@ -353,7 +353,81 @@ public class VectorUtil { } return area; } + + /** Compute the general winding of the vertices + * @param vertices array of Vertices + * @return CCW or CW {@link Winding} + */ public static Winding getWinding(ArrayList vertices) { return area(vertices) >= 0 ? Winding.CCW : Winding.CW ; } + + + /** Compute intersection between two segments + * @param a vertex 1 of first segment + * @param b vertex 2 of first segment + * @param c vertex 1 of second segment + * @param d vertex 2 of second segment + * @return the intersection coordinates if the segments intersect, otherwise + * returns null + */ + public static float[] seg2SegIntersection(Vertex a, Vertex b, Vertex c, Vertex d) { + float determinant = (a.getX()-b.getX())*(c.getY()-d.getY()) - (a.getY()-b.getY())*(c.getX()-d.getX()); + + if (determinant == 0) + return null; + + float alpha = (a.getX()*b.getY()-a.getY()*b.getX()); + float beta = (c.getX()*d.getY()-c.getY()*d.getY()); + float xi = ((c.getX()-d.getX())*alpha-(a.getX()-b.getX())*beta)/determinant; + float yi = ((c.getY()-d.getY())*alpha-(a.getY()-b.getY())*beta)/determinant; + + float gamma = (xi - a.getX())/(b.getX() - a.getX()); + float gamma1 = (xi - c.getX())/(d.getX() - c.getX()); + if(gamma <= 0 || gamma >= 1) return null; + if(gamma1 <= 0 || gamma1 >= 1) return null; + + return new float[]{xi,yi,0}; + } + + /** Compute intersection between two lines + * @param a vertex 1 of first line + * @param b vertex 2 of first line + * @param c vertex 1 of second line + * @param d vertex 2 of second line + * @return the intersection coordinates if the lines intersect, otherwise + * returns null + */ + public static float[] line2lineIntersection(Vertex a, Vertex b, Vertex c, Vertex d) { + float determinant = (a.getX()-b.getX())*(c.getY()-d.getY()) - (a.getY()-b.getY())*(c.getX()-d.getX()); + + if (determinant == 0) + return null; + + float alpha = (a.getX()*b.getY()-a.getY()*b.getX()); + float beta = (c.getX()*d.getY()-c.getY()*d.getY()); + float xi = ((c.getX()-d.getX())*alpha-(a.getX()-b.getX())*beta)/determinant; + float yi = ((c.getY()-d.getY())*alpha-(a.getY()-b.getY())*beta)/determinant; + + return new float[]{xi,yi,0}; + } + + /** Check if a segment intersects with a triangle + * @param a vertex 1 of the triangle + * @param b vertex 2 of the triangle + * @param c vertex 3 of the triangle + * @param d vertex 1 of first segment + * @param e vertex 2 of first segment + * @return true if the segment intersects at least one segment of the triangle, false otherwise + */ + public static boolean tri2SegIntersection(Vertex a, Vertex b, Vertex c, Vertex d, Vertex e){ + if(seg2SegIntersection(a, b, d, e) != null) + return true; + if(seg2SegIntersection(b, c, d, e) != null) + return true; + if(seg2SegIntersection(a, c, d, e) != null) + return true; + + return false; + } } diff --git a/src/jogl/classes/jogamp/graph/font/typecast/TypecastRenderer.java b/src/jogl/classes/jogamp/graph/font/typecast/TypecastRenderer.java index 86d4d2a3d..b3ee9c95b 100644 --- a/src/jogl/classes/jogamp/graph/font/typecast/TypecastRenderer.java +++ b/src/jogl/classes/jogamp/graph/font/typecast/TypecastRenderer.java @@ -1,221 +1,220 @@ -/** - * Copyright 2011 JogAmp Community. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without modification, are - * permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, this list of - * conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright notice, this list - * of conditions and the following disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND - * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF - * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * The views and conclusions contained in the software and documentation are those of the - * authors and should not be interpreted as representing official policies, either expressed - * or implied, of JogAmp Community. - */ -package jogamp.graph.font.typecast; - -import java.util.ArrayList; - -import jogamp.graph.font.typecast.ot.OTGlyph; -import jogamp.graph.font.typecast.ot.Point; -import jogamp.graph.geom.plane.AffineTransform; -import jogamp.graph.geom.plane.Path2D; -import jogamp.graph.geom.plane.PathIterator; - -import com.jogamp.graph.curve.OutlineShape; -import com.jogamp.graph.font.Font; -import com.jogamp.graph.geom.Vertex; -import com.jogamp.graph.geom.Vertex.Factory; - -/** - * Factory to build a {@link com.jogamp.graph.geom.Path2D Path2D} from - * {@link jogamp.graph.font.typecast.ot.OTGlyph Glyph}s. - */ -public class TypecastRenderer { - - private static void getPaths(TypecastFont font, - CharSequence string, float pixelSize, AffineTransform transform, Path2D[] p) - { - if (string == null) { - return; - } - Font.Metrics metrics = font.getMetrics(); - float advanceTotal = 0; - float lineGap = metrics.getLineGap(pixelSize) ; - float ascent = metrics.getAscent(pixelSize) ; - float descent = metrics.getDescent(pixelSize) ; - if (transform == null) { - transform = new AffineTransform(); - } - AffineTransform t = new AffineTransform(); - - float advanceY = lineGap - descent + ascent; - float y = 0; - for (int i=0; i getOutlineShapes(TypecastFont font, CharSequence string, float pixelSize, AffineTransform transform, Factory vertexFactory) { - Path2D[] paths = new Path2D[string.length()]; - getPaths(font, string, pixelSize, transform, paths); - - ArrayList shapes = new ArrayList(); - final int numGlyps = paths.length; - for (int index=0;index vertexFactory, float[] coords, int segmentType){ - switch(segmentType) { - case PathIterator.SEG_MOVETO: - shape.closeLastOutline(); - shape.addEmptyOutline(); - shape.addVertex(0, vertexFactory.create(coords, 0, 2, true)); - //numVertices++; - break; - case PathIterator.SEG_LINETO: - shape.addVertex(0, vertexFactory.create(coords, 0, 2, true)); - break; - case PathIterator.SEG_QUADTO: - shape.addVertex(0, vertexFactory.create(coords, 0, 2, false)); - shape.addVertex(0, vertexFactory.create(coords, 2, 2, true)); - break; - case PathIterator.SEG_CUBICTO: - shape.addVertex(0, vertexFactory.create(coords, 0, 2, false)); - shape.addVertex(0, vertexFactory.create(coords, 2, 2, false)); - shape.addVertex(0, vertexFactory.create(coords, 4, 2, true)); - break; - case PathIterator.SEG_CLOSE: - shape.closeLastOutline(); - break; - default: - throw new IllegalArgumentException("Unhandled Segment Type: "+segmentType); - } - } - - /** - * Build a {@link com.jogamp.graph.geom.Path2D Path2D} from a - * {@link jogamp.graph.font.typecast.ot.OTGlyph Glyph}. This glyph path can then - * be transformed and rendered. - */ - public static Path2D buildPath(OTGlyph glyph) { - - if (glyph == null) { - return null; - } - - Path2D glyphPath = new Path2D(); - - // Iterate through all of the points in the glyph. Each time we find a - // contour end point, add the point range to the path. - int firstIndex = 0; - int count = 0; - for (int i = 0; i < glyph.getPointCount(); i++) { - count++; - if (glyph.getPoint(i).endOfContour) { - addContourToPath(glyphPath, glyph, firstIndex, count); - firstIndex = i + 1; - count = 0; - } - } - return glyphPath; - } - - private static void addContourToPath(Path2D gp, OTGlyph glyph, int startIndex, int count) { - int offset = 0; - while (offset < count) { - Point point = glyph.getPoint(startIndex + offset%count); - Point point_plus1 = glyph.getPoint(startIndex + (offset+1)%count); - Point point_plus2 = glyph.getPoint(startIndex + (offset+2)%count); - if(offset == 0) - { - gp.moveTo(point.x, point.y); - } - - if (point.onCurve) { - if (point_plus1.onCurve) { - // s = new Line2D.Float(point.x, point.y, point_plus1.x, point_plus1.y); - gp.lineTo( point_plus1.x, point_plus1.y ); - offset++; - } else { - if (point_plus2.onCurve) { - // s = new QuadCurve2D.Float( point.x, point.y, point_plus1.x, point_plus1.y, point_plus2.x, point_plus2.y); - gp.quadTo(point_plus1.x, point_plus1.y, point_plus2.x, point_plus2.y); - offset+=2; - } else { - // s = new QuadCurve2D.Float(point.x,point.y,point_plus1.x,point_plus1.y, - // midValue(point_plus1.x, point_plus2.x), midValue(point_plus1.y, point_plus2.y)); - gp.quadTo(point_plus1.x, point_plus1.y, midValue(point_plus1.x, point_plus2.x), midValue(point_plus1.y, point_plus2.y)); - offset+=2; - } - } - } else { - if (point_plus1.onCurve) { - // s = new QuadCurve2D.Float(midValue(point_minus1.x, point.x), midValue(point_minus1.y, point.y), - // point.x, point.y, point_plus1.x, point_plus1.y); - //gp.curve3(point_plus1.x, point_plus1.y, point.x, point.y); - gp.quadTo(point.x, point.y, point_plus1.x, point_plus1.y); - offset++; - - } else { - // s = new QuadCurve2D.Float(midValue(point_minus1.x, point.x), midValue(point_minus1.y, point.y), point.x, point.y, - // midValue(point.x, point_plus1.x), midValue(point.y, point_plus1.y)); - //gp.curve3(midValue(point.x, point_plus1.x), midValue(point.y, point_plus1.y), point.x, point.y); - gp.quadTo(point.x, point.y, midValue(point.x, point_plus1.x), midValue(point.y, point_plus1.y)); - offset++; - } - } - } - } - - private static int midValue(int a, int b) { - return a + (b - a)/2; - } -} +/** + * Copyright 2011 JogAmp Community. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, are + * permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this list of + * conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, this list + * of conditions and the following disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * The views and conclusions contained in the software and documentation are those of the + * authors and should not be interpreted as representing official policies, either expressed + * or implied, of JogAmp Community. + */ +package jogamp.graph.font.typecast; + +import java.util.ArrayList; + +import jogamp.graph.font.typecast.ot.OTGlyph; +import jogamp.graph.font.typecast.ot.Point; +import jogamp.graph.geom.plane.AffineTransform; +import jogamp.graph.geom.plane.Path2D; +import jogamp.graph.geom.plane.PathIterator; + +import com.jogamp.graph.curve.OutlineShape; +import com.jogamp.graph.font.Font; +import com.jogamp.graph.geom.Vertex; +import com.jogamp.graph.geom.Vertex.Factory; + +/** + * Factory to build a {@link com.jogamp.graph.geom.Path2D Path2D} from + * {@link jogamp.graph.font.typecast.ot.OTGlyph Glyph}s. + */ +public class TypecastRenderer { + + private static void getPaths(TypecastFont font, + CharSequence string, float pixelSize, AffineTransform transform, Path2D[] p) + { + if (string == null) { + return; + } + Font.Metrics metrics = font.getMetrics(); + float advanceTotal = 0; + float lineGap = metrics.getLineGap(pixelSize) ; + float ascent = metrics.getAscent(pixelSize) ; + float descent = metrics.getDescent(pixelSize) ; + if (transform == null) { + transform = new AffineTransform(); + } + AffineTransform t = new AffineTransform(); + + float advanceY = lineGap - descent + ascent; + float y = 0; + for (int i=0; i getOutlineShapes(TypecastFont font, CharSequence string, float pixelSize, AffineTransform transform, Factory vertexFactory) { + Path2D[] paths = new Path2D[string.length()]; + getPaths(font, string, pixelSize, transform, paths); + + ArrayList shapes = new ArrayList(); + final int numGlyps = paths.length; + for (int index=0;index vertexFactory, float[] coords, int segmentType){ + switch(segmentType) { + case PathIterator.SEG_MOVETO: + shape.closeLastOutline(); + shape.addEmptyOutline(); + shape.addVertex(0, vertexFactory.create(coords, 0, 2, true)); + break; + case PathIterator.SEG_LINETO: + shape.addVertex(0, vertexFactory.create(coords, 0, 2, true)); + break; + case PathIterator.SEG_QUADTO: + shape.addVertex(0, vertexFactory.create(coords, 0, 2, false)); + shape.addVertex(0, vertexFactory.create(coords, 2, 2, true)); + break; + case PathIterator.SEG_CUBICTO: + shape.addVertex(0, vertexFactory.create(coords, 0, 2, false)); + shape.addVertex(0, vertexFactory.create(coords, 2, 2, false)); + shape.addVertex(0, vertexFactory.create(coords, 4, 2, true)); + break; + case PathIterator.SEG_CLOSE: + shape.closeLastOutline(); + break; + default: + throw new IllegalArgumentException("Unhandled Segment Type: "+segmentType); + } + } + + /** + * Build a {@link com.jogamp.graph.geom.Path2D Path2D} from a + * {@link jogamp.graph.font.typecast.ot.OTGlyph Glyph}. This glyph path can then + * be transformed and rendered. + */ + public static Path2D buildPath(OTGlyph glyph) { + + if (glyph == null) { + return null; + } + + Path2D glyphPath = new Path2D(); + + // Iterate through all of the points in the glyph. Each time we find a + // contour end point, add the point range to the path. + int firstIndex = 0; + int count = 0; + for (int i = 0; i < glyph.getPointCount(); i++) { + count++; + if (glyph.getPoint(i).endOfContour) { + addContourToPath(glyphPath, glyph, firstIndex, count); + firstIndex = i + 1; + count = 0; + } + } + return glyphPath; + } + + private static void addContourToPath(Path2D gp, OTGlyph glyph, int startIndex, int count) { + int offset = 0; + while (offset < count) { + Point point = glyph.getPoint(startIndex + offset%count); + Point point_plus1 = glyph.getPoint(startIndex + (offset+1)%count); + Point point_plus2 = glyph.getPoint(startIndex + (offset+2)%count); + if(offset == 0) + { + gp.moveTo(point.x, point.y); + } + + if (point.onCurve) { + if (point_plus1.onCurve) { + // s = new Line2D.Float(point.x, point.y, point_plus1.x, point_plus1.y); + gp.lineTo( point_plus1.x, point_plus1.y ); + offset++; + } else { + if (point_plus2.onCurve) { + // s = new QuadCurve2D.Float( point.x, point.y, point_plus1.x, point_plus1.y, point_plus2.x, point_plus2.y); + gp.quadTo(point_plus1.x, point_plus1.y, point_plus2.x, point_plus2.y); + offset+=2; + } else { + // s = new QuadCurve2D.Float(point.x,point.y,point_plus1.x,point_plus1.y, + // midValue(point_plus1.x, point_plus2.x), midValue(point_plus1.y, point_plus2.y)); + gp.quadTo(point_plus1.x, point_plus1.y, midValue(point_plus1.x, point_plus2.x), midValue(point_plus1.y, point_plus2.y)); + offset+=2; + } + } + } else { + if (point_plus1.onCurve) { + // s = new QuadCurve2D.Float(midValue(point_minus1.x, point.x), midValue(point_minus1.y, point.y), + // point.x, point.y, point_plus1.x, point_plus1.y); + //gp.curve3(point_plus1.x, point_plus1.y, point.x, point.y); + gp.quadTo(point.x, point.y, point_plus1.x, point_plus1.y); + offset++; + + } else { + // s = new QuadCurve2D.Float(midValue(point_minus1.x, point.x), midValue(point_minus1.y, point.y), point.x, point.y, + // midValue(point.x, point_plus1.x), midValue(point.y, point_plus1.y)); + //gp.curve3(midValue(point.x, point_plus1.x), midValue(point.y, point_plus1.y), point.x, point.y); + gp.quadTo(point.x, point.y, midValue(point.x, point_plus1.x), midValue(point.y, point_plus1.y)); + offset++; + } + } + } + } + + private static int midValue(int a, int b) { + return a + (b - a)/2; + } +} -- cgit v1.2.3