>
> I have
>
> PMVMatrix m = new PMVMatrix();
> System.out.println("MATRIX - Identity");
> System.out.println(m);
>
> // Simple 10 x 10 view port
> int[] viewport = new int[] { 0,0,10,10};
>
> float[] win = new float[4];
>
> m.gluProject(1f, 0f, 0f, viewport, 0, win, 0);
> System.out.println("Project 1,0 -->" + Arrays.toString(win));
>
> m.gluProject(0f, 0f, 0f, viewport, 0, win, 0);
> System.out.println("Project 0,0 -->" + Arrays.toString(win));
>
> m.glMatrixMode(GL_PROJECTION);
> m.glOrthof(0, 10, 0, 10, 1, -1);
> System.out.println("MATRIX - Ortho 0,0,10,10 - Locate the origin in the bottom left and scale");
> System.out.println(m);
>
> m.gluProject(1f, 0f, 0f, viewport, 0, win, 0);
> System.out.println("Project 1,0 -->" +Arrays.toString(win));
>
> m.gluProject(0f, 0f, 0f, viewport, 0, win, 0);
> System.out.println("Project 0,0 -->" +Arrays.toString(win));
>
> System.out.println();
> System.out.println("Don't trust the implementation");
>
> float[] projMatrix = new float[16];
> m.glGetFloatv(GL_PROJECTION, projMatrix, 0);
> System.out.println("Projection");
> for (int i=0; i<4;i++) System.out.println(projMatrix[i] + "\t" +projMatrix[i+1] + "\t" +projMatrix[i+2] + "\t" +projMatrix[i+3] );
>
>
> float[] modelMatrix = new float[16];
> m.glGetFloatv(GL_MODELVIEW, modelMatrix, 0);
> System.out.println("Modelview");
> for (int i=0; i<4;i++) System.out.println(modelMatrix[i] + "\t" +modelMatrix[i+1] + "\t" +modelMatrix[i+2] + "\t" +modelMatrix[i+3] );
>
>
> new ProjectFloat(true).gluProject(1f, 0f, 0f,modelMatrix, 0,
> projMatrix, 0, viewport, 0, win, 0);
> System.out.println("Project 1,0 -->" +Arrays.toString(win));
>
> new ProjectFloat(true).gluProject(0f, 0f, 0f,modelMatrix, 0,
> projMatrix, 0, viewport, 0, win, 0);
> System.out.println("Project 0,0 -->" +Arrays.toString(win));
>
>
> And when I run it I get
>
> PMVMatrix[backingArray true, modified[P true, Mv true, T true], dirty/req[Mvi true/false, Mvit true/false], Projection
> [    1.00000    0.00000    0.00000    0.00000 ]
> [    0.00000    1.00000    0.00000    0.00000 ]
> [    0.00000    0.00000    1.00000    0.00000 ]
> [    0.00000    0.00000    0.00000    1.00000 ]
> , Modelview
> [    1.00000    0.00000    0.00000    0.00000 ]
> [    0.00000    1.00000    0.00000    0.00000 ]
> [    0.00000    0.00000    1.00000    0.00000 ]
> [    0.00000    0.00000    0.00000    1.00000 ]
> , Texture
> [    1.00000    0.00000    0.00000    0.00000 ]
> [    0.00000    1.00000    0.00000    0.00000 ]
> [    0.00000    0.00000    1.00000    0.00000 ]
> [    0.00000    0.00000    0.00000    1.00000 ]
> ]
> Project 1,0 -->[10.0, 5.0, 0.5, 0.0]
> Project 0,0 -->[5.0, 5.0, 0.5, 0.0]
> MATRIX - Ortho 0,0,10,10 - Locate the origin in the bottom left and scale
> PMVMatrix[backingArray true, modified[P true, Mv true, T true], dirty/req[Mvi true/false, Mvit true/false], Projection
> [    0.20000    0.00000    0.00000   -1.00000 ]
> [    0.00000    0.20000    0.00000   -1.00000 ]
> [    0.00000    0.00000    1.00000    0.00000 ]
> [    0.00000    0.00000    0.00000    1.00000 ]
> , Modelview
> [    1.00000    0.00000    0.00000    0.00000 ]
> [    0.00000    1.00000    0.00000    0.00000 ]
> [    0.00000    0.00000    1.00000    0.00000 ]
> [    0.00000    0.00000    0.00000    1.00000 ]
> , Texture
> [    1.00000    0.00000    0.00000    0.00000 ]
> [    0.00000    1.00000    0.00000    0.00000 ]
> [    0.00000    0.00000    1.00000    0.00000 ]
> [    0.00000    0.00000    0.00000    1.00000 ]
> ]
> Project 1,0 -->[10.0, 5.0, 0.5, 0.0]
> Project 0,0 -->[5.0, 5.0, 0.5, 0.0]
>
> Don't trust the implementation
> Projection
> 0.2 0.0 0.0 0.0
> 0.0 0.0 0.0 0.0
> 0.0 0.0 0.0 0.2
> 0.0 0.0 0.2 0.0
> Modelview
> 1.0 0.0 0.0 0.0
> 0.0 0.0 0.0 0.0
> 0.0 0.0 0.0 1.0
> 0.0 0.0 1.0 0.0
> Project 1,0 -->[0.99999994, 0.0, 0.5, 0.0]
> Project 0,0 -->[0.0, 0.0, 0.5, 0.0]
>
>
> I am not getting what I expect after I apply the glOrtho in the PMVMatrix (the
> anwser is not changing) and when I compare it to the result of FloatProject I
> get different anwsers. The FloatProject Anwser looks correct. I think that I
> have tracked this down to the PMVMatrix gluProject function on the lines that
> have  matrixMv.array(), and
>  matrixP.array(). They seem to be getting the wrong data from the array
>
> Can you tell me if I am using these functions incorrectly and if so how they
> are expected to be used. For now I am using the FloatProject work around.
>
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