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/*
* Copyright (c) 2007 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution 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.
*
* Neither the name of Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
* INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
* MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
* ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
* DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
* DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
* ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
* SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed or intended for use
* in the design, construction, operation or maintenance of any nuclear
* facility.
*
*/
package net.java.joglutils.msg.elements;
import com.jogamp.opengl.GL2;
import com.jogamp.opengl.glu.GLU;
import net.java.joglutils.msg.math.Mat4f;
import net.java.joglutils.msg.misc.State;
/** Represents the projection matrix, which transforms view-space
coordinates into screen-space coordinates, and performs
side-effects in OpenGL. */
public class GLProjectionMatrixElement extends ProjectionMatrixElement {
// Boilerplate for concrete element subclasses
public Element newInstance() {
return new GLProjectionMatrixElement();
}
public static GLProjectionMatrixElement getInstance(State state) {
return (GLProjectionMatrixElement) ProjectionMatrixElement.getInstance(state);
}
public static void enable(State defaultState) {
Element tmp = new GLProjectionMatrixElement();
defaultState.setElement(tmp.getStateIndex(), tmp);
}
public void push(State state) {
super.push(state);
}
public void setElt(Mat4f matrix) {
super.setElt(matrix);
GL2 gl = GLU.getCurrentGL().getGL2();
gl.glMatrixMode(GL2.GL_PROJECTION);
if (gl.isExtensionAvailable("GL_VERSION_1_3")) {
gl.glLoadTransposeMatrixf(matrix.getRowMajorData(), 0);
} else {
float[] tmp = new float[16];
matrix.getColumnMajorData(tmp);
gl.glLoadMatrixf(tmp, 0);
}
gl.glMatrixMode(GL2.GL_MODELVIEW);
}
}
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