// Auxiliary functions. TransAffineResizing() modifier sets up the resizing
// matrix on the basis of the given Width and Height and the initial
// Width and Height of the window. The implementation should simply
// call this function every time when it catches the resizing event
// passing in the new values of Width and Height of the window.
// Nothing prevents you from "cheating" the scaling matrix if you
// call this function from somewhere with wrong arguments.
// TransAffineResizing() accessor simply returns current resizing matrix
// which can be used to apply additional scaling of any of your
// stuff when the window is being resized.
// Width(), Height(), InitialWidth(), and InitialHeight() must be
// clear to understand with no comments :-)
public void TransAffineResizing(int width, int height)
{
if ((m_window_flags & (uint)EWindowFlags.KeepAspectRatio) != 0)
{
double sx = (double)(width) / (double)(m_initial_width);
double sy = (double)(height) / (double)(m_initial_height);
if (sy < sx)
{
sx = sy;
}
m_resize_mtx = Affine.NewScaling(sx, sx);
Transform.Viewport vp = new Transform.Viewport();
vp.PreserveAspectRatio(0.5, 0.5, Pictor.Transform.Viewport.EAspectRatio.Meet);
vp.DeviceViewport(0, 0, width, height);
vp.WorldViewport(0, 0, m_initial_width, m_initial_height);
m_resize_mtx = vp.ToAffine();
}
else
{
m_resize_mtx = Affine.NewScaling(
(double)(width) / (double)(m_initial_width),
(double)(height) / (double)(m_initial_height));
}
}
// Auxiliary functions. TransAffineResizing() modifier sets up the resizing
// matrix on the basis of the given Width and Height and the initial
// Width and Height of the window. The implementation should simply
// call this function every time when it catches the resizing event
// passing in the new values of Width and Height of the window.
// Nothing prevents you from "cheating" the scaling matrix if you
// call this function from somewhere with wrong arguments.
// TransAffineResizing() accessor simply returns current resizing matrix
// which can be used to apply additional scaling of any of your
// stuff when the window is being resized.
// Width(), Height(), InitialWidth(), and InitialHeight() must be
// clear to understand with no comments :-)
public void TransAffineResizing(int width, int height)
{
if ((m_window_flags & (uint)EWindowFlags.KeepAspectRatio) != 0)
{
double sx = (double)(width) / (double)(m_initial_width);
double sy = (double)(height) / (double)(m_initial_height);
if (sy < sx) sx = sy;
m_resize_mtx = Affine.NewScaling(sx, sx);
Transform.Viewport vp = new Transform.Viewport();
vp.PreserveAspectRatio(0.5, 0.5, Pictor.Transform.Viewport.EAspectRatio.Meet);
vp.DeviceViewport(0, 0, width, height);
vp.WorldViewport(0, 0, m_initial_width, m_initial_height);
m_resize_mtx = vp.ToAffine();
}
else
{
m_resize_mtx = Affine.NewScaling(
(double)(width) / (double)(m_initial_width),
(double)(height) / (double)(m_initial_height));
}
}
