/// <summary>
/// Initialize a transformer.
/// </summary>
/// <param name="transformerRect"> The initial rectangle. </param>
public Transformer(TransformerRect transformerRect)
{
this.LeftTop = transformerRect.LeftTop;
this.RightTop = transformerRect.RightTop;
this.RightBottom = transformerRect.RightBottom;
this.LeftBottom = transformerRect.LeftBottom;
}
/// <summary>
/// Initialize a transformer.
/// </summary>
/// <param name="pointA"> The frist point of transformer. </param>
/// <param name="pointB"> The second point of transformer. </param>
/// <param name="isCenter"> Scaling around the center. </param>
/// <param name="isRatio"> Maintain a ratio when scaling. </param>
public Transformer(Vector2 pointA, Vector2 pointB, bool isCenter, bool isRatio)
{
TransformerRect rect = new TransformerRect(pointA, pointB, isCenter, isRatio);
this.LeftTop = rect.LeftTop;
this.RightTop = rect.RightTop;
this.RightBottom = rect.RightBottom;
this.LeftBottom = rect.LeftBottom;
}
/// <summary>
/// Initialize a transformer.
/// </summary>
/// <param name="pointA"> The frist point of transformer. </param>
/// <param name="pointB"> The second point of transformer. </param>
public Transformer(Vector2 pointA, Vector2 pointB)
{
TransformerRect rect = new TransformerRect(pointA, pointB);
this.LeftTop = rect.LeftTop;
this.RightTop = rect.RightTop;
this.RightBottom = rect.RightBottom;
this.LeftBottom = rect.LeftBottom;
}
/// <summary>
/// Draw a marquee-tool.
/// </summary>
/// <param name="drawingSession"> The drawing-session. </param>
/// <param name="resourceCreator"> The resource-creator. </param>
/// <param name="toolType"> The marquee-tool type. </param>
/// <param name="marqueeTool"> The marquee-tool. </param>
/// <param name="matrix"> The matrix. </param>
public static void DrawMarqueeTool(this CanvasDrawingSession drawingSession, ICanvasResourceCreator resourceCreator, MarqueeToolType toolType, MarqueeTool marqueeTool, Matrix3x2 matrix)
{
if (marqueeTool.IsStarted)
{
switch (toolType)
{
case MarqueeToolType.Rectangular:
{
TransformerRect transformerRect = marqueeTool.TransformerRect;
CanvasGeometry canvasGeometry = transformerRect.ToRectangle(resourceCreator, matrix);
drawingSession.DrawThickGeometry(canvasGeometry);
}
break;
case MarqueeToolType.Elliptical:
{
TransformerRect transformerRect = marqueeTool.TransformerRect;
CanvasGeometry canvasGeometry = transformerRect.ToEllipse(resourceCreator, matrix);
drawingSession.DrawThickGeometry(canvasGeometry);
}
break;
case MarqueeToolType.Polygonal:
{
Vector2[] points = marqueeTool.Points.ToArray();
CanvasGeometry canvasGeometry = CanvasGeometry.CreatePolygon(resourceCreator, points);
CanvasGeometry canvasGeometryTransform = canvasGeometry.Transform(matrix);
drawingSession.DrawThickGeometry(canvasGeometryTransform);
Vector2 firstPoint = Vector2.Transform(marqueeTool.Points.First(), matrix);
Vector2 lastPoint = Vector2.Transform(marqueeTool.Points.Last(), matrix);
drawingSession.DrawNode5(firstPoint);
drawingSession.DrawNode5(lastPoint);
}
break;
case MarqueeToolType.FreeHand:
{
Vector2[] points = marqueeTool.Points.ToArray();
CanvasGeometry canvasGeometry = CanvasGeometry.CreatePolygon(resourceCreator, points);
CanvasGeometry canvasGeometryTransform = canvasGeometry.Transform(matrix);
drawingSession.DrawThickGeometry(canvasGeometryTransform);
}
break;
}
}
}
/// <summary> /// The vector was contained in a rectangle. /// </summary> /// <param name="transformerRect"> The destination rectangle. </param> /// <returns> Return **true** if the vector was contained in rectangle. </returns> public bool Contained(TransformerRect transformerRect) => this.Contained(transformerRect.Left, transformerRect.Top, transformerRect.Right, transformerRect.Bottom);
private static void DrawMarqueeToolEllipse(this CanvasDrawingSession drawingSession, ICanvasResourceCreator resourceCreator, TransformerRect transformerRect, Rect sourceRectangle, MarqueeCompositeMode compositeMode = MarqueeCompositeMode.New)
{
switch (compositeMode)
{
case MarqueeCompositeMode.New:
{
drawingSession.Clear(Windows.UI.Colors.Transparent);
Vector2 centerPoint = transformerRect.Center;
float width = transformerRect.Width / 2;
float height = transformerRect.Height / 2;
drawingSession.FillEllipse(centerPoint, width, height, Windows.UI.Colors.DodgerBlue);
}
break;
case MarqueeCompositeMode.Add:
{
Vector2 centerPoint = transformerRect.Center;
float width = transformerRect.Width / 2;
float height = transformerRect.Height / 2;
drawingSession.FillEllipse(centerPoint, width, height, Windows.UI.Colors.DodgerBlue);
}
break;
case MarqueeCompositeMode.Subtract:
{
CanvasCommandList canvasCommandList = CanvasDrawingSessionExtensions.GetMarqueeToolEllipse(drawingSession, resourceCreator, transformerRect);
CanvasComposite canvasComposite = CanvasComposite.DestinationOut;
drawingSession.DrawImage(canvasCommandList, 0, 0, sourceRectangle, 1, CanvasImageInterpolation.Linear, canvasComposite);
}
break;
case MarqueeCompositeMode.Intersect:
{
CanvasCommandList canvasCommandList = CanvasDrawingSessionExtensions.GetMarqueeToolEllipse(drawingSession, resourceCreator, transformerRect);
CanvasComposite canvasComposite = CanvasComposite.DestinationIn;
drawingSession.DrawImage(canvasCommandList, 0, 0, sourceRectangle, 1, CanvasImageInterpolation.Linear, canvasComposite);
}
break;
case MarqueeCompositeMode.Xor:
{
CanvasCommandList canvasCommandList = CanvasDrawingSessionExtensions.GetMarqueeToolEllipse(drawingSession, resourceCreator, transformerRect);
CanvasComposite canvasComposite = CanvasComposite.Xor;
drawingSession.DrawImage(canvasCommandList, 0, 0, sourceRectangle, 1, CanvasImageInterpolation.Linear, canvasComposite);
}
break;
}
}
private static CanvasCommandList GetMarqueeToolEllipse(CanvasDrawingSession drawingSession, ICanvasResourceCreator resourceCreator, TransformerRect transformerRect)
{
CanvasCommandList canvasCommandList = new CanvasCommandList(resourceCreator);
using (CanvasDrawingSession ds = canvasCommandList.CreateDrawingSession())
{
Vector2 centerPoint = transformerRect.Center;
float width = transformerRect.Width / 2;
float height = transformerRect.Height / 2;
drawingSession.FillEllipse(centerPoint, width, height, Windows.UI.Colors.DodgerBlue);
}
return(canvasCommandList);
}
private static void DrawMarqueeToolRectangular(this CanvasDrawingSession drawingSession, ICanvasResourceCreator resourceCreator, TransformerRect transformerRect, Rect sourceRectangle, MarqueeCompositeMode compositeMode = MarqueeCompositeMode.New)
{
switch (compositeMode)
{
case MarqueeCompositeMode.New:
{
drawingSession.Clear(Windows.UI.Colors.Transparent);
Rect rect = transformerRect.ToRect();
drawingSession.FillRectangle(rect, Windows.UI.Colors.DodgerBlue);
}
break;
case MarqueeCompositeMode.Add:
{
Rect rect = transformerRect.ToRect();
drawingSession.FillRectangle(rect, Windows.UI.Colors.DodgerBlue);
}
break;
case MarqueeCompositeMode.Subtract:
{
CanvasCommandList canvasCommandList = CanvasDrawingSessionExtensions.GetMarqueeToolRectangular(drawingSession, resourceCreator, transformerRect);
CanvasComposite canvasComposite = CanvasComposite.DestinationOut;
drawingSession.DrawImage(canvasCommandList, 0, 0, sourceRectangle, 1, CanvasImageInterpolation.Linear, canvasComposite);
}
break;
case MarqueeCompositeMode.Intersect:
{
CanvasCommandList canvasCommandList = CanvasDrawingSessionExtensions.GetMarqueeToolRectangular(drawingSession, resourceCreator, transformerRect);
CanvasComposite canvasComposite = CanvasComposite.DestinationIn;
drawingSession.DrawImage(canvasCommandList, 0, 0, sourceRectangle, 1, CanvasImageInterpolation.Linear, canvasComposite);
}
break;
case MarqueeCompositeMode.Xor:
{
CanvasCommandList canvasCommandList = CanvasDrawingSessionExtensions.GetMarqueeToolRectangular(drawingSession, resourceCreator, transformerRect);
CanvasComposite canvasComposite = CanvasComposite.Xor;
drawingSession.DrawImage(canvasCommandList, 0, 0, sourceRectangle, 1, CanvasImageInterpolation.Linear, canvasComposite);
}
break;
}
}
private static CanvasCommandList GetMarqueeToolRectangular(CanvasDrawingSession drawingSession, ICanvasResourceCreator resourceCreator, TransformerRect transformerRect)
{
CanvasCommandList canvasCommandList = new CanvasCommandList(resourceCreator);
using (CanvasDrawingSession ds = canvasCommandList.CreateDrawingSession())
{
Rect rect = transformerRect.ToRect();
ds.FillRectangle(rect, Windows.UI.Colors.DodgerBlue);
}
return(canvasCommandList);
}
/// <summary> /// Check node which in the rect. /// </summary> /// <param name="boxRect"> The destination rectangle. </param> public void BoxChoose(TransformerRect boxRect) => this.RectChoose(boxRect.Left, boxRect.Top, boxRect.Right, boxRect.Bottom);