diff --git a/src/ImageProcessorCore/Samplers/Processors/RotateProcessor.cs b/src/ImageProcessorCore/Samplers/Processors/RotateProcessor.cs
index c4fbdfd14..59d665d2e 100644
--- a/src/ImageProcessorCore/Samplers/Processors/RotateProcessor.cs
+++ b/src/ImageProcessorCore/Samplers/Processors/RotateProcessor.cs
@@ -13,44 +13,13 @@ namespace ImageProcessorCore.Processors
///
public class RotateProcessor : ImageSampler
{
- ///
- /// The image used for storing the first pass pixels.
- ///
- private Image firstPass;
-
- ///
- /// The angle of rotation in degrees.
- ///
- private float angle;
-
///
public override int Parallelism { get; set; } = 1;
///
/// Gets or sets the angle of rotation in degrees.
///
- public float Angle
- {
- get
- {
- return this.angle;
- }
-
- set
- {
- if (value > 360)
- {
- value -= 360;
- }
-
- if (value < 0)
- {
- value += 360;
- }
-
- this.angle = value;
- }
- }
+ public float Angle { get; set; }
///
/// Gets or sets the center point.
@@ -65,46 +34,44 @@ namespace ImageProcessorCore.Processors
///
protected override void OnApply(ImageBase target, ImageBase source, Rectangle targetRectangle, Rectangle sourceRectangle)
{
- // If we are expanding we need to pad the bounds of the source rectangle.
- // We can use the resizer in nearest neighbor mode to do this fairly quickly.
if (this.Expand)
{
- // First find out how big the target rectangle should be.
Point centre = this.Center == Point.Empty ? Rectangle.Center(sourceRectangle) : this.Center;
- Matrix3x2 rotation = Point.CreateRotation(centre, -this.angle);
- Rectangle rectangle = ImageMaths.GetBoundingRectangle(sourceRectangle, rotation);
- ResizeOptions options = new ResizeOptions
- {
- Size = new Size(rectangle.Width, rectangle.Height),
- Mode = ResizeMode.BoxPad
- };
-
- // Get the padded bounds and resize the image.
- Rectangle bounds = ResizeHelper.CalculateTargetLocationAndBounds(source, options);
- this.firstPass = new Image(rectangle.Width, rectangle.Height);
- target.SetPixels(rectangle.Width, rectangle.Height, new float[rectangle.Width * rectangle.Height * 4]);
- new ResizeProcessor(new NearestNeighborResampler()).Apply(this.firstPass, source, rectangle.Width, rectangle.Height, bounds, sourceRectangle);
- }
- else
- {
- // Just clone the pixels across.
- this.firstPass = new Image(source.Width, source.Height);
- this.firstPass.ClonePixels(source.Width, source.Height, source.Pixels);
+ Matrix3x2 rotation = Point.CreateRotation(centre, -this.Angle);
+ Matrix3x2 invertedRotation;
+ Matrix3x2.Invert(rotation, out invertedRotation);
+ Rectangle bounds = ImageMaths.GetBoundingRectangle(source.Bounds, invertedRotation);
+ target.SetPixels(bounds.Width, bounds.Height, new float[bounds.Width * bounds.Height * 4]);
}
}
///
protected override void Apply(ImageBase target, ImageBase source, Rectangle targetRectangle, Rectangle sourceRectangle, int startY, int endY)
{
- int height = this.firstPass.Height;
+ int height = target.Height;
int startX = 0;
- int endX = this.firstPass.Width;
- Point centre = this.Center == Point.Empty ? Rectangle.Center(this.firstPass.Bounds) : this.Center;
- Matrix3x2 rotation = Point.CreateRotation(centre, -this.angle);
+ int endX = target.Width;
+ Point centre = this.Center == Point.Empty ? Rectangle.Center(target.Bounds) : this.Center;
+
+ //Matrix3x2 invertedRotation;
+ Matrix3x2 rotation = Point.CreateRotation(centre, -this.Angle);
+ //Matrix3x2.Invert(rotation, out invertedRotation);
+ //Vector2 rightTop = Vector2.Transform(new Vector2(source.Width, 0), invertedRotation);
+ //Vector2 leftBottom = Vector2.Transform(new Vector2(0, source.Height), invertedRotation);
+
+ //if (this.Angle < 0)
+ //{
+ // rotation = Point.CreateRotation(new Point((int)-leftBottom.X, (int)leftBottom.Y), -this.Angle);
+ //}
+
+ //if (this.Angle > 0)
+ //{
+ // rotation = Point.CreateRotation(new Point((int)rightTop.X, (int)-rightTop.Y), -this.Angle);
+ //}
// Since we are not working in parallel we use full height and width
// of the first pass image.
- using (PixelAccessor firstPassPixels = this.firstPass.Lock())
+ using (PixelAccessor sourcePixels = source.Lock())
using (PixelAccessor targetPixels = target.Lock())
{
Parallel.For(
@@ -114,11 +81,10 @@ namespace ImageProcessorCore.Processors
{
for (int x = startX; x < endX; x++)
{
- // Rotate at the centre point
Point rotated = Point.Rotate(new Point(x, y), rotation);
- if (this.firstPass.Bounds.Contains(rotated.X, rotated.Y))
+ if (source.Bounds.Contains(rotated.X, rotated.Y))
{
- targetPixels[x, y] = firstPassPixels[rotated.X, rotated.Y];
+ targetPixels[x, y] = sourcePixels[rotated.X, rotated.Y];
}
}