public SlideImage CreateImage() { // can't calculate this in constructor because Source is null if(num_lines_per_frame == -1) { this.num_lines_per_frame = (int)Math.Ceiling((double) Source.Height / (double) Frames); this.half = Source.Height / 2; } int current_num_line = CurrentFrame * num_lines_per_frame / 2; int min_line = this.half - current_num_line; int max_line = this.half + current_num_line; SlideImage image = new SlideImage (); image.CopyProperties (Source); image.Pixels = new byte [Source.Stride * Source.Height]; for (int h = 0; h < Source.Height; h++) { int pos = h * Source.Stride; if(h >= min_line && h <= max_line) { for(int s = 0; s < Source.Stride; s++) { image.Pixels[pos + s] = Target.Pixels[pos + s]; } } else { for(int s = 0; s < Source.Stride; s++) { image.Pixels[pos + s] = Source.Pixels[pos + s]; } } } return image; }
void CreateClone(SlideImage src) { cloned = new SlideImage (); cloned.CopyProperties (Source); cloned.Pixels = new byte [src.Stride * src.Height]; Array.Copy (src.Pixels, cloned.Pixels, src.Stride * src.Height); }
public override SlideImage Apply(SlideImage org) { SlideImage image; double r, g, b, intensity; image = new SlideImage (); image.CopyProperties (org); image.Pixels = new byte [org.Stride * org.Height]; for (int i = 0; i < org.Stride * org.Height; i += org.Channels) { r = (double) org.Pixels [i]; g = (double) org.Pixels [i + 1]; b = (double) org.Pixels [i + 2]; intensity = (0.299 * r + 0.587 * g + 0.114 * b); r = 0.94 * intensity; g = 0.78 * intensity; b = 0.54 * intensity; image.Pixels [i + 0] = (byte) r; image.Pixels [i + 1] = (byte) g; image.Pixels [i + 2] = (byte) b; if (org.Channels == 4) // Alpha image.Pixels [i + 3] = 0xff; } return image; }
public SlideImage CreateImage() { double percentage; SlideImage image; int pos; percentage = 1d - ((1d / Frames) * CurrentFrame); image = new SlideImage (); image.CopyProperties (Source); image.Pixels = new byte [Source.Stride * Source.Height]; for (int h = 0; h < Source.Height; h++) { pos = h * Source.Stride; for (int w = 0; w < Source.Width; w++) { for (int c = 0; c < Source.Channels; c++) image.Pixels [pos + c] = (byte) (Source.Pixels[pos + c] * percentage); pos += Source.Channels; } } return image; }
public override SlideImage Apply(SlideImage org) { SlideImage image; byte r, g, b, intensity; image = new SlideImage (); image.CopyProperties (org); image.Pixels = new byte [org.Stride * org.Height]; for (int i = 0; i < org.Stride * org.Height; i += org.Channels) { r = (byte) org.Pixels [i]; g = (byte) org.Pixels [i + 1]; b = (byte) org.Pixels [i + 2]; intensity = (byte) ((double)r * 0.30 + (double)g * 0.59 + (double)b * 0.11); image.Pixels [i + 0] = intensity; image.Pixels [i + 1] = intensity; image.Pixels [i + 2] = intensity; if (org.Channels == 4) // Alpha image.Pixels [i + 3] = 0xff; } return image; }
public SlideImage CreateImage() { SlideImage image; int pos; image = new SlideImage (); image.CopyProperties (Source); image.Pixels = new byte [Source.Stride * Source.Height]; // N frames from target image int h; for (h = 0; h < Target.Height * ((double) CurrentFrame / (double) Frames); h++) { pos = h * Target.Stride; for (int w = 0; w < Target.Width; w++) { for (int c = 0; c < Target.Channels; c++) image.Pixels[pos + c] = Target.Pixels[pos + c]; pos += Source.Channels; } } // Rest from the source image for (; h < Source.Height; h++) { pos = h * Source.Stride; for (int w = 0; w < Source.Width; w++) { for (int c = 0; c < Source.Channels; c++) image.Pixels[pos + c] = Source.Pixels[pos + c]; pos += Source.Channels; } } return image; }
public DataImageSurface ToDataImageSurface() { PixelFormat pixelformat_src; SlideImage slide = new SlideImage (); slide.CopyProperties (this); slide.pixels = (byte[]) this.Pixels.Clone(); slide.ProcessEffects (); pixelformat_src = slide.pixel_format; // Pixel format of current buffer slide.pixel_format = PixelFormat.CAIRO_ARGB; // New target format slide.LoadFromPixelData (slide.pixels, pixelformat_src, width, height, width * slide.channels, slide.channels); return new DataImageSurface (DataImageSurface.Allocate (slide.Pixels), Cairo.Format.ARGB32, slide.width, slide.height, slide.stride); }
public DataImageSurface GetThumbnail(int width, int height, bool copy_title) { PixelFormat pixelformat_src; SlideImage slide = new SlideImage (); slide.CopyProperties (this); if(copy_title) slide.Title = Title; slide.LoadAndScaleImage (width, height); slide.ProcessEffects (); slide.ProcessImage (); pixelformat_src = slide.pixel_format; // Pixel format of current buffer slide.pixel_format = PixelFormat.CAIRO_ARGB; // New target format slide.LoadFromPixelData (slide.pixels, pixelformat_src, width, height, width * slide.channels, slide.channels); return new DataImageSurface (DataImageSurface.Allocate (slide.Pixels), Cairo.Format.ARGB32, slide.width, slide.height, slide.stride); }
public SlideImage GetSlideThumbnail(int width, int height, bool copyTitle) { SlideImage newImage = new SlideImage(); newImage.CopyProperties(this); using(DataImageSurface thumbnail = this.GetThumbnail(width, height, copyTitle)) { newImage.FromDataImageSurface(thumbnail); } return newImage; }
protected SlideImage CreateImage(int points, double radius) { double percentage; percentage = ((1d / Frames) * CurrentFrame); SlideImage image = new SlideImage (); image.CopyProperties (Source); image.Pixels = new byte [Target.Stride * Target.Height]; SlideImage draw_image = new SlideImage (); double cx = Convert.ToInt32 ((Source.Width / 2)); double cy = Convert.ToInt32 ((Source.Height / 2)); double r1 = Target.Width * percentage; double r2 = Target.Width * percentage * 0.5; DataImageSurface draw = Source.ToDataImageSurface (); using (Context gr = new Context (draw)) { // First paint in black the image. gr.Save (); gr.MoveTo (0,0); gr.LineTo (Target.Width, 0); gr.LineTo (Target.Width, Target.Height); gr.LineTo (0, Source.Height); gr.ClosePath (); gr.Color = new Color (0,0,0); gr.Fill (); gr.Save (); double x, y; double x1, y1; // Draw the points of the star, creating a path with a line for (int i = 0; i < points; i = i + 2) { x = cx + (r1 * System.Math.Cos (i * radius - System.Math.PI / 2)); y = cy + (r1 * System.Math.Sin (i * radius - System.Math.PI / 2)); gr.LineTo (new PointD (x, y)); x1 = cx + (r2 * System.Math.Cos ((i + 1) * radius - System.Math.PI / 2)); y1 = cy + (r2 * System.Math.Sin ((i + 1) * radius - System.Math.PI / 2)); gr.LineTo (new PointD (x1, y1)); } gr.ClosePath (); // Fill the resulting polygon with a color gr.Color = new Color (1, 115, 0); gr.Fill (); gr.Restore (); draw_image.FromDataImageSurface (draw); bool sourced = percentage < 0.5; if (sourced) Array.Copy (Source.Pixels, image.Pixels, Source.Stride * Source.Height); else Array.Copy (Target.Pixels, image.Pixels, Target.Stride * Target.Height); // Draw target image to the star // Compare Target picture with the temporary // If in the temporary we have found a black pixel, draw a pixel from the Source slide // If in the temporary we have found a non-black pixel, draw a pixel from the Target slide for (int h = 0; h < Target.Height; h++) { int pos = h * Target.Stride; int pos_draw = h * draw_image.Stride; for (int w = 0; w < Target.Width; w++) { if (draw_image.Pixels[pos_draw] != 0) { if (sourced) { for (int c = 0; c < Target.Channels; c++) { image.Pixels[pos + c] = Target.Pixels[pos + c]; } } }else{ if (sourced == false) { for (int c = 0; c < Target.Channels; c++) { image.Pixels[pos + c] = Source.Pixels[pos + c]; } } } pos += Target.Channels; pos_draw += draw_image.Channels; } } } ((IDisposable) draw).Dispose (); return image; }