private static void DrawCropCore(CanvasDrawingSession drawingSession, Vector2 leftTop, Vector2 rightTop, Vector2 rightBottom, Vector2 leftBottom, Windows.UI.Color accentColor)
{
// Line
CanvasDrawingSessionExtensions.DrawBoundCore(drawingSession, leftTop, rightTop, rightBottom, leftBottom, accentColor);
// Center
Vector2 centerLeft = (leftTop + leftBottom) / 2;
Vector2 centerTop = (leftTop + rightTop) / 2;
Vector2 centerRight = (rightTop + rightBottom) / 2;
Vector2 centerBottom = (leftBottom + rightBottom) / 2;
// Vertical Horizontal
Vector2 vertical = centerBottom - centerTop;
Vector2 horizontal = centerRight - centerLeft;
Vector2 verticalUnit = vertical / vertical.Length();
Vector2 horizontalUnit = horizontal / horizontal.Length();
const float length = 10;
Vector2 verticalLength = verticalUnit * length;
Vector2 horizontalLength = horizontalUnit * length;
const float space = 2;
Vector2 verticalSpace = verticalUnit * space;
Vector2 horizontalSpace = horizontalUnit * space;
// Scale2
{
drawingSession.FillCircle(leftTop, 10, accentColor);
drawingSession.FillCircle(leftTop, 9, Windows.UI.Colors.White);
drawingSession.FillCircle(rightTop, 10, accentColor);
drawingSession.FillCircle(rightTop, 9, Windows.UI.Colors.White);
drawingSession.FillCircle(rightBottom, 10, accentColor);
drawingSession.FillCircle(rightBottom, 9, Windows.UI.Colors.White);
drawingSession.FillCircle(leftBottom, 10, accentColor);
drawingSession.FillCircle(leftBottom, 9, Windows.UI.Colors.White);
}
// Scale1
if (FanKit.Math.OutNodeDistance(centerLeft, centerRight))
{
drawingSession.FillCircle(centerTop, 10, accentColor);
drawingSession.FillCircle(centerTop, 9, Windows.UI.Colors.White);
drawingSession.FillCircle(centerBottom, 10, accentColor);
drawingSession.FillCircle(centerBottom, 9, Windows.UI.Colors.White);
}
if (FanKit.Math.OutNodeDistance(centerTop, centerBottom))
{
drawingSession.FillCircle(centerLeft, 10, accentColor);
drawingSession.FillCircle(centerLeft, 9, Windows.UI.Colors.White);
drawingSession.FillCircle(centerRight, 10, accentColor);
drawingSession.FillCircle(centerRight, 9, Windows.UI.Colors.White);
}
}
private static void DrawBoundNodesCore(CanvasDrawingSession drawingSession, Vector2 leftTop, Vector2 rightTop, Vector2 rightBottom, Vector2 leftBottom, Windows.UI.Color accentColor, bool disabledRadian)
{
// Line
CanvasDrawingSessionExtensions.DrawBoundCore(drawingSession, leftTop, rightTop, rightBottom, leftBottom, accentColor);
// Center
Vector2 centerLeft = (leftTop + leftBottom) / 2;
Vector2 centerTop = (leftTop + rightTop) / 2;
Vector2 centerRight = (rightTop + rightBottom) / 2;
Vector2 centerBottom = (leftBottom + rightBottom) / 2;
// Scale2
drawingSession.DrawNode2(leftTop, accentColor);
drawingSession.DrawNode2(rightTop, accentColor);
drawingSession.DrawNode2(rightBottom, accentColor);
drawingSession.DrawNode2(leftBottom, accentColor);
if (disabledRadian == false)
{
// Outside
Vector2 outsideLeft = Math.GetOutsidePointInTransformer(centerLeft, centerRight);
Vector2 outsideTop = Math.GetOutsidePointInTransformer(centerTop, centerBottom);
Vector2 outsideRight = Math.GetOutsidePointInTransformer(centerRight, centerLeft);
Vector2 outsideBottom = Math.GetOutsidePointInTransformer(centerBottom, centerTop);
// Radian
drawingSession.DrawThickLine(outsideTop, centerTop);
drawingSession.DrawNode(outsideTop, accentColor);
// Skew
// drawingSession.DrawNode2(outsideTop, accentColor);
// drawingSession.DrawNode2(outsideLeft, accentColor);
drawingSession.DrawNode2(outsideRight, accentColor);
drawingSession.DrawNode2(outsideBottom, accentColor);
}
// Scale1
if (Math.OutNodeDistance(centerLeft, centerRight))
{
drawingSession.DrawNode2(centerTop, accentColor);
drawingSession.DrawNode2(centerBottom, accentColor);
}
if (Math.OutNodeDistance(centerTop, centerBottom))
{
drawingSession.DrawNode2(centerLeft, accentColor);
drawingSession.DrawNode2(centerRight, accentColor);
}
}
/// <summary> /// Draw lines on bound. /// </summary> /// <param name="drawingSession"> The drawing-session. </param> /// <param name="transformer"> The transformer. </param> /// <param name="matrix"> The matrix. </param> /// <param name="accentColor"> The accent color. </param> public static void DrawBound(this CanvasDrawingSession drawingSession, Transformer transformer, Matrix3x2 matrix, Windows.UI.Color accentColor) => CanvasDrawingSessionExtensions.DrawBoundCore(drawingSession, Vector2.Transform(transformer.LeftTop, matrix), Vector2.Transform(transformer.RightTop, matrix), Vector2.Transform(transformer.RightBottom, matrix), Vector2.Transform(transformer.LeftBottom, matrix), accentColor);
/// <summary> /// Draw lines on bound. /// </summary> /// <param name="drawingSession"> The drawing-session. </param> /// <param name="transformer"> transformer </param> /// <param name="accentColor"> The accent color. </param> public static void DrawBound(this CanvasDrawingSession drawingSession, Transformer transformer, Windows.UI.Color accentColor) => CanvasDrawingSessionExtensions.DrawBoundCore(drawingSession, transformer.LeftTop, transformer.RightTop, transformer.RightBottom, transformer.LeftBottom, accentColor);