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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.curve;
import java.util.ArrayList;
import com.jogamp.graph.geom.Triangle;
import com.jogamp.graph.geom.Vertex;
import com.jogamp.opengl.util.PMVMatrix;
/** A Region is the OGL binding of one or more OutlineShapes
* Defined by its vertices and generated triangles. The Region
* defines the final shape of the OutlineShape(s), which shall produced a shaded
* region on the screen.
*
* Implementations of the Region shall take care of the OGL
* binding of the depending on its context, profile.
*
* @see RegionFactory, OutlineShape
*/
public interface Region {
/** The vertices index in an OGL object
*/
public static int VERTEX_ATTR_IDX = 0;
/** The Texture Coord index in an OGL object
*/
public static int TEXCOORD_ATTR_IDX = 1;
/** single pass rendering, fast, but AA might not be perfect */
public static int SINGLE_PASS = 1;
/** two pass rendering, slower and more resource hungry (FBO), but AA is perfect */
public static int TWO_PASS = 2;
/** Updates a graph region by updating the ogl related
* objects for use in rendering. if called for the first time
* it initialize the objects.
*/
public void update();
/** Renders the associated OGL objects specifying
* current width/hight of window for multi pass rendering
* of the region.
* @param matrix current {@link PMVMatrix}.
* @param vp_width current screen width
* @param vp_height current screen height
* @param width texture width for mp rendering
*
* @see update()
*/
public void render(PMVMatrix matrix, int vp_width, int vp_height, int width);
/** Adds a list of {@link Triangle} objects to the Region
* These triangles are to be binded to OGL objects
* on the next call to {@code update}
* @param tris an arraylist of triangle objects
*
* @see update()
*/
public void addTriangles(ArrayList<Triangle> tris);
/** Get the current number of vertices associated
* with this region. This number is not necessary equal to
* the OGL binded number of vertices.
* @return vertices count
*
* @see isDirty()
*/
public int getNumVertices();
/** Adds a list of {@link Vertex} objects to the Region
* These vertices are to be binded to OGL objects
* on the next call to {@code update}
* @param verts an arraylist of vertex objects
*
* @see update()
*/
public void addVertices(ArrayList<Vertex> verts);
/** Check if this region is dirty. A region is marked dirty
* when new Vertices, Triangles, and or Lines are added after a
* call to update()
* @return true if region is Dirty, false otherwise
*
* @see update();
*/
public boolean isDirty();
/** Delete and clean the associated OGL
* objects
*/
public void destroy();
public boolean isFlipped();
/** Set if the y coordinate of the region should be flipped
* {@code y=-y} used mainly for fonts since they use opposite vertex
* as origion
* @param flipped flag if the coordinate is flipped defaults to false.
*/
public void setFlipped(boolean flipped);
}
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