/**
* Uses the camera to map all points from model space, (x, y, z) to screen space (x_, y_, z_).
* Remember that x_ represents the depth of the point and (y_, z_) maps to the screen (x, y)
* co-ords of the point.
*
* @see CameraMan
*/
public void transform() {
final float[] f = modelViewer.cameraMan.getFocus();
final float[][] m = modelViewer.cameraMan.getMatrix();
final float d = modelViewer.cameraMan.getDistance();
float[] a = new float[3];
visible = false; // set true if any points are visble to the camera
for (int i = 0; i < npoints * 3; i += 3) {
a[0] = ps[i] - f[0];
a[1] = ps[i + 1] - f[1];
a[2] = ps[i + 2] - f[2];
Tools3d.applyTo(m, a, a);
visibles[i / 3] = Tools3d.projectYZ(a, a, d);
ps_[i] = a[0];
if (visibles[i / 3]) {
modelViewer.cameraMan.scaleToScreen(a);
ps_[i + 1] = a[1];
ps_[i + 2] = a[2];
visible = true;
}
// depth bounding box
if (i == 0) {
x_min = x_max = ps_[i];
} else {
if (ps_[i] < x_min) x_min = ps_[i];
if (ps_[i] > x_max) x_max = ps_[i];
}
}
}
