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Added "no shadow" for the Torn-Edge effect, also fixed some tear bugs (hopefully) and simplified the code.

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This commit is contained in:
RKrom 2014-06-12 13:43:42 +02:00
commit 8c22a44b33
4 changed files with 131 additions and 83 deletions
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107
GreenshotPlugin/Core/ImageHelper.cs
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@ -441,6 +441,18 @@ namespace GreenshotPlugin.Core {
return currentImage;
}
/// <summary>
/// Helper method for the tornedge
/// </summary>
/// <param name="path">Path to draw to</param>
/// <param name="points">Points for the lines to draw</param>
private static void DrawLines(GraphicsPath path, List<Point> points) {
path.AddLine(points[0], points[1]);
for (int i = 0; i < points.Count-1; i++) {
path.AddLine(points[i], points[i+1]);
}
}
/// <summary>
/// Make the picture look like it's torn
/// </summary>
@ -454,69 +466,72 @@ namespace GreenshotPlugin.Core {
Image returnImage = CreateEmpty(sourceImage.Width, sourceImage.Height, PixelFormat.Format32bppArgb, Color.Empty, sourceImage.HorizontalResolution, sourceImage.VerticalResolution);
using (GraphicsPath path = new GraphicsPath()) {
Random random = new Random();
int horizontalRegions = sourceImage.Width / horizontalToothRange;
int verticalRegions = sourceImage.Height / verticalToothRange;
int horizontalRegions = (int)Math.Round((float)sourceImage.Width / horizontalToothRange);
int verticalRegions = (int)Math.Round((float)sourceImage.Height / verticalToothRange);
Point topLeft = new Point(0, 0);
Point topRight = new Point(sourceImage.Width, 0);
Point bottomLeft = new Point(0, sourceImage.Height);
Point bottomRight = new Point(sourceImage.Width, sourceImage.Height);
List<Point> points = new List<Point>();
// Start
Point previousEndingPoint = new Point(0,0);
Point newEndingPoint;
if (edges[0]) {
previousEndingPoint = new Point(horizontalToothRange, random.Next(1, toothHeight));
// Top
for (int i = 0; i < horizontalRegions; i++) {
int x = previousEndingPoint.X + horizontalToothRange;
int y = random.Next(1, toothHeight);
newEndingPoint = new Point(x, y);
path.AddLine(previousEndingPoint, newEndingPoint);
previousEndingPoint = newEndingPoint;
// calculate starting point only if the left edge is torn
if (!edges[3]) {
points.Add(topLeft);
} else {
points.Add(new Point(random.Next(1, toothHeight), random.Next(1, toothHeight)));
}
for (int i = 1; i < horizontalRegions-1; i++) {
points.Add(new Point(i*horizontalToothRange, random.Next(1, toothHeight)));
}
points.Add(new Point(sourceImage.Width - random.Next(1, toothHeight), random.Next(1, toothHeight)));
} else {
newEndingPoint = new Point(sourceImage.Width, 0);
path.AddLine(previousEndingPoint, newEndingPoint);
previousEndingPoint = newEndingPoint;
// set start & endpoint to be the default "whole-line"
points.Add(topLeft);
points.Add(topRight);
}
// Right
if (edges[1]) {
// Right
for (int i = 0; i < verticalRegions; i++) {
int x = sourceImage.Width - random.Next(1, toothHeight);
int y = previousEndingPoint.Y + verticalToothRange;
newEndingPoint = new Point(x, y);
path.AddLine(previousEndingPoint, newEndingPoint);
previousEndingPoint = newEndingPoint;
for (int i = 1; i < verticalRegions-1; i++) {
points.Add(new Point(sourceImage.Width - random.Next(1, toothHeight), i * verticalToothRange));
}
points.Add(new Point(sourceImage.Width - random.Next(1, toothHeight), sourceImage.Height - random.Next(1, toothHeight)));
} else {
newEndingPoint = new Point(sourceImage.Width, sourceImage.Height);
path.AddLine(previousEndingPoint, newEndingPoint);
previousEndingPoint = newEndingPoint;
// correct previous ending point
points[points.Count - 1] = topRight;
// set endpoint to be the default "whole-line"
points.Add(bottomRight);
}
// Bottom
if (edges[2]) {
// Bottom
for (int i = 0; i < horizontalRegions; i++) {
int x = previousEndingPoint.X - horizontalToothRange;
int y = sourceImage.Height - random.Next(1, toothHeight);
newEndingPoint = new Point(x, y);
path.AddLine(previousEndingPoint, newEndingPoint);
previousEndingPoint = newEndingPoint;
for (int i = 1; i < horizontalRegions -1; i++) {
points.Add(new Point(sourceImage.Width - i * horizontalToothRange, sourceImage.Height - random.Next(1, toothHeight)));
}
points.Add(new Point(random.Next(1, toothHeight), sourceImage.Height - random.Next(1, toothHeight)));
} else {
newEndingPoint = new Point(0, sourceImage.Height);
path.AddLine(previousEndingPoint, newEndingPoint);
previousEndingPoint = newEndingPoint;
// correct previous ending point
points[points.Count - 1] = bottomRight;
// set endpoint to be the default "whole-line"
points.Add(bottomLeft);
}
// Left
if (edges[3]) {
// Left
for (int i = 0; i < verticalRegions; i++) {
int x = random.Next(1, toothHeight);
int y = previousEndingPoint.Y - verticalToothRange;
newEndingPoint = new Point(x, y);
path.AddLine(previousEndingPoint, newEndingPoint);
previousEndingPoint = newEndingPoint;
// One fewer as the end point is the starting point
for (int i = 1; i < verticalRegions -1; i++) {
points.Add(new Point(random.Next(1, toothHeight), points[points.Count - 1].Y - verticalToothRange));
}
} else {
newEndingPoint = new Point(0, 0);
path.AddLine(previousEndingPoint, newEndingPoint);
//previousEndingPoint = newEndingPoint;
// correct previous ending point
points[points.Count - 1] = bottomLeft;
// set endpoint to be the default "whole-line"
points.Add(topLeft);
}
// End point always is the starting point
points[points.Count - 1] = points[0];
DrawLines(path, points);
path.CloseFigure();