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/**
* 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.geom;
import java.util.ArrayList;
import com.jogamp.graph.geom.Vertex;
import com.jogamp.graph.math.VectorUtil;
/** Define a single continuous stroke by control vertices.
* The vertices define the shape of the region defined by this
* outline. The Outline can contain a list of off-curve and on-curve
* vertices which define curved regions.
*
* Note: An outline should be closed to be rendered as a region.
*
* @see OutlineShape, Region
*/
public class Outline<T extends Vertex> implements Comparable<Outline<T>>{
private ArrayList<T> vertices = new ArrayList<T>(3);
private boolean closed = false;
private AABBox box = new AABBox();
/**Create an outline defined by control vertices.
* An outline can contain off Curve vertices which define curved
* regions in the outline.
*/
public Outline(){
}
/** Add a vertex to the outline. The vertex is added at the
* end of the outline loop/strip.
* @param vertex Vertex to be added
*/
public final void addVertex(T vertex) {
vertices.add(vertex);
box.resize(vertex.getX(), vertex.getY(), vertex.getZ());
}
public final void addVertex(Vertex.Factory<? extends Vertex> factory, float x, float y, boolean onCurve) {
addVertex(factory, x, y, 0f, onCurve);
}
@SuppressWarnings("unchecked")
public final void addVertex(Vertex.Factory<? extends Vertex> factory, float x, float y, float z, boolean onCurve) {
Vertex v = factory.create(x, y, z);
v.setOnCurve(onCurve);
addVertex((T)v);
}
@SuppressWarnings("unchecked")
public final void addVertex(Vertex.Factory<? extends Vertex> factory, float[] coordsBuffer, int offset, int length, boolean onCurve) {
Vertex v = factory.create(coordsBuffer, offset, length);
v.setOnCurve(onCurve);
addVertex((T)v);
}
public T getVertex(int index){
return vertices.get(index);
}
public boolean isEmpty(){
return (vertices.size() == 0);
}
public T getLastVertex(){
if(isEmpty()){
return null;
}
return vertices.get(vertices.size()-1);
}
public ArrayList<T> getVertices() {
return vertices;
}
public void setVertices(ArrayList<T> vertices) {
this.vertices = vertices;
}
public AABBox getBox() {
return box;
}
public boolean isClosed() {
return closed;
}
/** define if this outline is closed or not.
* if set to closed, checks if the last vertex is
* equal to the first vertex. If not Equal adds a
* vertex at the end to the list.
* @param closed
*/
public void setClosed(boolean closed) {
this.closed = closed;
if(closed){
T first = vertices.get(0);
T last = getLastVertex();
if(!VectorUtil.checkEquality(first.getCoord(), last.getCoord())){
@SuppressWarnings("unchecked")
T v = (T) first.clone();
vertices.add(v);
}
}
}
/** Compare two outlines with Bounding Box area
* as criteria.
* @see java.lang.Comparable#compareTo(java.lang.Object)
*/
public int compareTo(Outline<T> outline) {
float size = box.getSize();
float newSize = outline.getBox().getSize();
if(size < newSize){
return -1;
}
else if(size > newSize){
return 1;
}
return 0;
}
}
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