private void _quadControl_ShapeUpdated(QuadWidgetControl sender, EventArgs arg)
{
//update shape of sprite
//transform from original lionBounds to quadPolygon
Quad2f quadCorners = _quadControl.GetQuadCorners();
_quadCorners[0] = quadCorners.left_top_x;
_quadCorners[1] = quadCorners.left_top_y;
_quadCorners[2] = quadCorners.right_top_x;
_quadCorners[3] = quadCorners.right_top_y;
_quadCorners[4] = quadCorners.right_bottom_x;
_quadCorners[5] = quadCorners.right_bottom_y;
_quadCorners[6] = quadCorners.left_bottom_x;
_quadCorners[7] = quadCorners.left_bottom_y;
//this is bilinear transformation
if (_useBilinear)
{
Bilinear txBilinear = Bilinear.RectToQuad(
_lionBounds.Left,
_lionBounds.Top,
_lionBounds.Right,
_lionBounds.Bottom,
_quadCorners);
if (txBilinear.IsValid)
{
SpriteShape spriteShape = _mySprite.GetSpriteShape();
spriteShape.ResetTransform();
spriteShape.ApplyTransform(txBilinear);
}
}
else
{
Perspective perspective = new Perspective(
_lionBounds.Left,
_lionBounds.Top,
_lionBounds.Right,
_lionBounds.Bottom,
_quadCorners);
if (perspective.IsValid)
{
SpriteShape spriteShape = _mySprite.GetSpriteShape();
spriteShape.ResetTransform();
spriteShape.ApplyTransform(perspective);
}
}
}
protected override void OnStart(AppHost host)
{
_background = new Box(800, 600);
_background.BackColor = Color.White;
host.AddChild(_background);
//---------------------------
_vgVisElem = VgVisualDocHelper.CreateVgVisualDocFromFile(@"Samples\lion.svg").VgRootElem;
_mySprite = new MyTestSprite(_vgVisElem);
//var evListener = new GeneralEventListener();
//evListener.MouseDrag += (s, e) =>
//{
// if (e.Ctrl)
// {
// //TODO:
// //classic Agg's move and rotate
// }
// else
// { //just move
// _mySprite.SetLocation(_mySprite.Left + e.XDiff, _mySprite.Top + e.YDiff);
// }
//};
//_mySprite.AttachExternalEventListener(evListener);
var rectBounds = _vgVisElem.GetRectBounds();
_quadControl = new QuadWidgetControl();
_quadControl.ShapeUpdated += _quadControl_ShapeUpdated;
//
_quadControl.SetupCorners(
new Quad2f(
(float)rectBounds.Left,
(float)rectBounds.Bottom,
(float)rectBounds.Width,
(float)rectBounds.Height));
_lionBounds = new RectangleF((float)rectBounds.Left,
(float)rectBounds.Bottom,
(float)rectBounds.Width,
(float)rectBounds.Height);
host.AddChild(_mySprite);
host.AddChild(_quadControl);
//--------------------
_cmdBiliear = new Box(30, 30);
_cmdBiliear.SetLocation(400, 20);
_cmdBiliear.BackColor = Color.Yellow;
_cmdBiliear.MouseDown += (s, e) =>
{
if (_useBilinear)
{
_cmdBiliear.BackColor = Color.Yellow;
_useBilinear = false;
}
else
{
_cmdBiliear.BackColor = Color.Red;
_useBilinear = true;
}
};
host.AddChild(_cmdBiliear);
}