/// <summary>
/// It initialize and controls the transformation of brush.
/// </summary>
/// <param name="startingPoint"> The starting point. </param>
/// <param name="point"> The point. </param>
public void InitializeController(Vector2 startingPoint, Vector2 point)
{
switch (this.Type)
{
case BrushType.None: break;
case BrushType.Color: break;
case BrushType.LinearGradient:
case BrushType.RadialGradient:
{
this.Center = startingPoint;
this.YPoint = point;
}
break;
case BrushType.EllipticalGradient:
case BrushType.Image:
{
this.Center = startingPoint;
this.XPoint = BrushBase.YToX(point, startingPoint);
this.YPoint = point;
}
break;
default:
break;
}
}
/// <summary>
/// Change the brush's type.
/// </summary>
/// <param name="type"> The new type. </param>
/// <param name="transformer"> The transformer. </param>
/// <param name="color"> The color. </param>
/// <param name="photo"> The photo. </param>
public void TypeChanged(BrushType type, Transformer transformer, Color color, Photo photo = null)
{
switch (type)
{
case BrushType.None:
break;
case BrushType.Color:
this.ChangeColorCore(color);
break;
case BrushType.LinearGradient:
case BrushType.RadialGradient:
this.ChangingStopsCore(color);
this.ChangingLinearGradientPointsCore(transformer);
break;
case BrushType.EllipticalGradient:
this.ChangingStopsCore(color);
this.ChangingEllipticalGradientPointsCore(transformer);
break;
case BrushType.Image:
{
// Photo
if (photo is null)
{
return;
}
Photocopier photocopier = photo.ToPhotocopier();
float width = photo.Width;
float height = photo.Height;
this.Photocopier = photocopier;
Vector2 center = this.Center;
Vector2 yPoint = this.YPoint;
//this.Center = center;
this.XPoint = BrushBase.YToX(yPoint, center, width, height);
//this.YPoint = yPoint;
this.ChangingEllipticalGradientPointsCore(transformer);
}
break;
default:
break;
}
this.Type = type;
}
private void ChangingEllipticalGradientPointsCore(Transformer transformer)
{
switch (this.Type)
{
case BrushType.None:
case BrushType.Color:
this.Center = transformer.Center;
this.XPoint = transformer.CenterRight;
this.YPoint = transformer.CenterBottom;
break;
case BrushType.LinearGradient:
case BrushType.RadialGradient:
this.XPoint = BrushBase.YToX(this.YPoint, this.Center);
break;
}
}
/// <summary>
/// It controls the transformation of brush.
/// </summary>
/// <param name="mode"> The mode. </param>
/// <param name="startingPoint"> The starting point. </param>
/// <param name="point"> The point. </param>
public void Controller(BrushHandleMode mode, Vector2 startingPoint, Vector2 point)
{
switch (this.Type)
{
case BrushType.None: break;
case BrushType.Color: break;
case BrushType.LinearGradient:
{
switch (mode)
{
case BrushHandleMode.Center:
this.Center = point;
return;
case BrushHandleMode.YPoint:
this.YPoint = point;
return;
}
}
break;
case BrushType.RadialGradient:
{
switch (mode)
{
case BrushHandleMode.Center:
{
Vector2 center = point;
Vector2 yPoint = center + this.StartingYPoint - this.StartingCenter;
this.Center = center;
this.YPoint = yPoint;
}
return;
case BrushHandleMode.YPoint:
this.YPoint = point;
return;
}
}
break;
case BrushType.EllipticalGradient:
case BrushType.Image:
{
switch (mode)
{
case BrushHandleMode.Center:
{
Vector2 center = point;
Vector2 offset = point - startingPoint;
this.Center = center;
this.XPoint = offset + this.StartingXPoint;
this.YPoint = offset + this.StartingYPoint;
}
return;
case BrushHandleMode.XPoint:
{
float radiusY = Vector2.Distance(this.StartingYPoint, this.StartingCenter);
this.XPoint = point;
this.YPoint = BrushBase.XToY(point, this.StartingCenter, radiusY);
}
return;
case BrushHandleMode.YPoint:
{
float radiusX = Vector2.Distance(this.StartingXPoint, this.StartingCenter);
this.XPoint = BrushBase.YToX(point, this.StartingCenter, radiusX);
this.YPoint = point;
}
return;
}
}
return;
default:
return;
}
}