public static PushedState PushSetTransform(this AP.IDrawingContextImpl context, A.Matrix matrix)
{
var oldMatrix = context.Transform;
context.Transform = matrix;
return(new PushedState(context, oldMatrix));
}
public PushedState(AP.IDrawingContextImpl context, A.Matrix matrix = default)
{
_context = context;
_matrix = matrix;
}
public SetTransformDrawCommand(A.Matrix matrix)
{
Matrix = matrix;
}
public static PushedState PushPostTransform(this AP.IDrawingContextImpl context, A.Matrix matrix) => PushSetTransform(context, context.Transform * matrix);
/// <summary>
/// Prepends a scale around the center of provided matrix.
/// </summary>
/// <param name="matrix">The matrix to prepend scale.</param>
/// <param name="scaleX">Scaling factor that is applied along the x-axis.</param>
/// <param name="scaleY">Scaling factor that is applied along the y-axis.</param>
/// <param name="centerX">The center X-coordinate of the scaling.</param>
/// <param name="centerY">The center Y-coordinate of the scaling.</param>
/// <returns>The created scaling matrix.</returns>
public static Matrix ScaleAtPrepend(Matrix matrix, double scaleX, double scaleY, double centerX, double centerY)
{
return ScaleAt(scaleX, scaleY, centerX, centerY) * matrix;
}
/// <summary>
/// Prepends a translation around the center of provided matrix.
/// </summary>
/// <param name="matrix">The matrix to prepend translation.</param>
/// <param name="offsetX">X-coordinate offset.</param>
/// <param name="offsetY">Y-coordinate offset.</param>
/// <returns>The created translation matrix.</returns>
public static Matrix TranslatePrepend(Matrix matrix, double offsetX, double offsetY)
{
return Translate(offsetX, offsetY) * matrix;
}
/// <summary>
/// Transforms a point by this matrix.
/// </summary>
/// <param name="matrix">The matrix to use as a transformation matrix.</param>
/// <param name="point">>The original point to apply the transformation.</param>
/// <returns>The result of the transformation for the input point.</returns>
public static Point TransformPoint(Matrix matrix, Point point)
{
return new Point(
(point.X * matrix.M11) + (point.Y * matrix.M21) + matrix.M31,
(point.X * matrix.M12) + (point.Y * matrix.M22) + matrix.M32);
}