void Viewport::Adjust (Perspective& np) {
long x = np.curx;
long y = np.cury;
AlignHelper(align, x, y, np.curwidth, np.curheight);
float px = float(x - np.x0) / float(np.width);
float py = float(y - np.y0) / float(np.height);
float zx = (
float(np.width) / float(cwidth) *
float(perspective->curwidth) / float(np.curwidth)
);
float zy = (
float(np.height) / float(cheight) *
float(perspective->curheight) / float(np.curheight)
);
DoAdjust(px, py, zx, zy);
np = *perspective;
}
void Viewport::DoAdjust (float px, float py, float zx, float zy) {
register Perspective* p = perspective;
register Shape* s = component->GetShape();
cwidth = s->width;
cheight = s->height;
if (px < 0.0) px = 0.0;
if (px > 1.0) px = 1.0;
if (py < 0.0) py = 0.0;
if (py > 1.0) py = 1.0;
long w = round(cwidth * zx);
long h = round(cheight * zy);
long x = round(w * px);
long y = round(h * py);
AlignHelper(align, x, y, -p->curwidth, -p->curheight);
Place(component, -x, -y, -x + (w - 1), -y + (h - 1));
p->width = w;
p->height = h;
p->curx = p->x0 + x;
p->cury = p->y0 + y;
p->Update();
}
void Viewport::DoAdjust(float px, float py, float zx, float zy) {
register Perspective* p = perspective;
register Shape* s = interior()->GetShape();
cwidth = s->width;
cheight = s->height;
if (px < 0.0) px = 0.0;
if (px > 1.0) px = 1.0;
if (py < 0.0) py = 0.0;
if (py > 1.0) py = 1.0;
int w = Math::round(cwidth * zx);
int h = Math::round(cheight * zy);
int x = Math::round(w * px);
int y = Math::round(h * py);
AlignHelper(align, x, y, -p->curwidth, -p->curheight);
Place(interior(), -x, -y, -x + (w - 1), -y + (h - 1));
p->width = w;
p->height = h;
p->curx = p->x0 + x;
p->cury = p->y0 + y;
p->Update();
}
float Viewport::YPos () {
long x = 0;
long y = perspective->cury;
AlignHelper(align, x, y, perspective->curwidth, perspective->curheight);
return float(y - perspective->y0) / float(perspective->height);
}
float Viewport::XPos () {
long x = perspective->curx;
long y = 0;
AlignHelper(align, x, y, perspective->curwidth, perspective->curheight);
return float(x - perspective->x0) / float(perspective->width);
}
