/** * Set the view matrix `s' is the scaling factor of translating real coordinates to the screen * coordinates (x0, y0) the screen coordinates of the center */ void setMatrix(Matrix3D viewMat, double s, double x0, double y0) { mat.unit(); mat.mult(viewMat); mat.scale(s, s, s); real2Screen = s; mat.translate(x0, y0, 0); transformed = false; }
public void mouseDragged(MouseEvent e) { int x = e.getX(); int y = e.getY(); tmpMatrix.unit(); tmpMatrix.xrot(360.0 * (mouseY - y) / getSize().height); tmpMatrix.yrot(360.0 * (x - mouseX) / getSize().width); viewMatrix.mult(tmpMatrix); repaint(); mouseX = x; mouseY = y; e.consume(); }