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I have working on an OBJ model loader in JoGL for a few days, and can obtain the vertices in the array draw: draw[face][vertex][x,y,z,or w] I have tried several ways to render this array (i.e. VBO's) but none have worked so far. I decided to attempt to render the face within a loop, however, when I run the program nothing is rendered. Here is my code:
for(int i = 0; i < draw.length; i++){
gl.glBegin(GL.GL_TRIANGLE_STRIP);
//start drawing
for(int i2=0;i2<draw[i].length;i2++){
float[] xyzw = new float[4];
//grab all the vertex values
for(int i3=0; i3<draw[i][i2].length;i3++){
xyzw[i3]=draw[i][i2][i3];
}
gl.glColor3f(1.0f, 0.0f, 0.0f); // Set the current drawing color to red
gl.glVertex3f(xyzw[0], xyzw[1], xyzw[2]);
}
gl.glEnd();
}
The peculiar thing is if I do this:
for(int i = 0; i < draw.length; i++){
gl.glBegin(GL.GL_TRIANGLE_STRIP);
//start drawing
for(int i2=0;i2<draw[i].length;i2++){
float[] xyzw = new float[4];
//grab all the vertex values
for(int i3=0; i3<draw[i][i2].length;i3++){
xyzw[i3]=draw[i][i2][i3];
}
gl.glColor3f(1.0f, 0.0f, 0.0f); // Set the current drawing color to red
gl.glVertex3f(xyzw[0], xyzw[1], xyzw[2]);
gl.glVertex3f(0.0f, 0.0f, 0.0f); // Top
gl.glColor3f(0.0f, 1.0f, 0.0f); // Set the current drawing color to green
gl.glVertex3f(1.0f, 0.0f, 1.0f); // Bottom Left
gl.glColor3f(0.0f, 0.0f, 1.0f); // Set the current drawing color to blue
gl.glVertex3f(0.0f, 0.0f, 1.0f); // Bottom Right
}
gl.glEnd();
}
then I get a contorted shape, however without those extraneous vertices nothing is rendered.
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