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* Copyright 2010 JogAmp Community. All rights reserved.
*
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* 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.
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* 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.
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* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
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package com.jogamp.opengl.test.junit.jogl.demos.es1;
import com.jogamp.opengl.GL;
import com.jogamp.opengl.GL2ES1;
import com.jogamp.opengl.fixedfunc.GLMatrixFunc;
import com.jogamp.opengl.glu.GLU;
import com.jogamp.opengl.glu.gl2es1.GLUgl2es1;
import com.jogamp.opengl.util.ImmModeSink;
/**
* A utility class to encapsulate drawing a single triangle for unit tests.
* @author Wade Walker
*/
public class OneTriangle {
public static void setup( final GL2ES1 gl, final int width, final int height ) {
gl.glMatrixMode( GLMatrixFunc.GL_PROJECTION );
gl.glLoadIdentity();
// coordinate system origin at lower left with width and height same as the window
final GLU glu = new GLUgl2es1();
glu.gluOrtho2D( 0.0f, width, 0.0f, height );
gl.glMatrixMode( GLMatrixFunc.GL_MODELVIEW );
gl.glLoadIdentity();
gl.glViewport( 0, 0, width, height );
}
public static void render( final GL2ES1 gl, final int width, final int height) {
gl.glClear( GL.GL_COLOR_BUFFER_BIT );
// draw a triangle filling the window
gl.glLoadIdentity();
final ImmModeSink immModeSink = ImmModeSink.createFixed(3*3,
3, GL.GL_FLOAT, // vertex
3, GL.GL_FLOAT, // color
0, GL.GL_FLOAT, // normal
0, GL.GL_FLOAT, // texCoords
GL.GL_STATIC_DRAW);
immModeSink.glBegin(GL.GL_TRIANGLES);
immModeSink.glColor3f( 1, 0, 0 );
immModeSink.glVertex2f( 0, 0 );
immModeSink.glColor3f( 0, 1, 0 );
immModeSink.glVertex2f( width, 0 );
immModeSink.glColor3f( 0, 0, 1 );
immModeSink.glVertex2f( width / 2f, height );
immModeSink.glEnd(gl, true);
}
}