Can anyone help me by supplying an example of returning a depth data from a
Raster?
I have the following code now, based on a mouseclick positioning, but it is
just not happening...
I'm trying to fill an array with the 1x1 depth value at that pixel. The
theory is, if I can get the depth from the Z-Buffer, then I can invert the
world transform, and get a screen to world transform that has an accurate Z
value instead of always getting 0.
public double getZ(int x2, int y2){
DepthComponentFloat dpf=new DepthComponentFloat(1,1);
dpf.setCapability(DepthComponentFloat.ALLOW_DATA_READ);
dpf.setCapability(DepthComponentFloat.ALLOW_SIZE_READ);
//I have no idea what this Point3f(0,0,0) is for, it isn't documented
well.
Raster r=new Raster(new Point3f(0,0,0),
Raster.RASTER_DEPTH,
x2,
y2,
1,
1,
null,
dpf);
r.setCapability(Raster.ALLOW_DEPTH_COMPONENT_READ);
GraphicsContext3D g=rememberCanvas.getGraphicsContext3D();
g.readRaster(r);
float[] ddata= new float[1];
dpf=(DepthComponentFloat)r.getDepthComponent();
dpf.getDepthData(ddata);
double d=ddata[1];
System.out.println("depth: "+ new Float(d).toString());
return ddata[1];
}
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