GLunproject

Newbie & Debugging Questions
#1

I thought i had this working… but drawing it to the screen is not yield the sort of line i would expect.
Unfortunately this is a pre-cursor to raycasting.

I have been working on it for a few days with little to no progress.

I would welcome if anyone can see something that is wrong with this unproject method.

thanks!
j.


public static Vector3f unproject(int mouseX, int mouseY, float depth){
		Vector3f mouse3DPosition = new  Vector3f();
		IntBuffer viewport = BufferUtils.createIntBuffer(16);
		FloatBuffer modelView = BufferUtils.createFloatBuffer(16);
		FloatBuffer projectionView = BufferUtils.createFloatBuffer(16);
		float winX = mouseX;
		float winY = mouseY; 
		FloatBuffer position = BufferUtils.createFloatBuffer(3);		
		// poplulate matrixies
		
		GL11.glPushMatrix();
			GL11.glGetFloat(GL11.GL_MODELVIEW_MATRIX, modelView);
			GL11.glGetFloat(GL11.GL_PROJECTION_MATRIX, projectionView);
			GL11.glGetInteger(GL11.GL_VIEWPORT, viewport);
			winY = viewport.get(3) - mouseY; // due to inverted coords
		 	GLU.gluUnProject(winX, winY, depth, modelView, projectionView, viewport, position);
			//position.rewind();
			mouse3DPosition = new Vector3f(position.get(0), -position.get(1), position.get(2));
		GL11.glPopMatrix();
		return mouse3DPosition;
	}
#2

Ok… never mind… i think i just found what i seem to have accidentally removed from my method… arg… dumb moment… please move on nothing to see here. :slight_smile: