/// <summary> /// Blends the colors based on the given weight values. /// </summary> /// <param name="c">The array of color values.</param> /// <param name="w">The array of weight values.</param> /// <returns> /// Each color will be blended in proportionally to its weight value respective to /// the total summation of the weight values. /// </returns> /// <remarks> /// "WAIP" stands for "weights, floating-point"</remarks> public static ColorBgra BlendColorsWFP(ColorBgra[] c, double[] w) { if (c.Length != w.Length) { throw new ArgumentException("c.Length != w.Length"); } if (c.Length == 0) { return(ColorBgra.FromUInt32(0)); } double wsum = 0; double asum = 0; for (int i = 0; i < w.Length; ++i) { wsum += w[i]; asum += (double)c[i].A * w[i]; } double a = asum / wsum; double aMultWsum = a * wsum; double b; double g; double r; if (asum == 0) { b = 0; g = 0; r = 0; } else { b = 0; g = 0; r = 0; for (int i = 0; i < c.Length; ++i) { b += (double)c[i].A * c[i].B * w[i]; g += (double)c[i].A * c[i].G * w[i]; r += (double)c[i].A * c[i].R * w[i]; } b /= aMultWsum; g /= aMultWsum; r /= aMultWsum; } return(ColorBgra.FromBgra((byte)b, (byte)g, (byte)r, (byte)a)); }
/// <summary> /// Blends the colors based on the given weight values. /// </summary> /// <param name="c">The array of color values.</param> /// <param name="w">The array of weight values.</param> /// <returns> /// The weights should be fixed point numbers. /// The total summation of the weight values will be treated as "1.0". /// Each color will be blended in proportionally to its weight value respective to /// the total summation of the weight values. /// </returns> /// <remarks> /// "WAIP" stands for "weights, arbitrary integer precision"</remarks> public static ColorBgra BlendColorsWAIP(ColorBgra[] c, uint[] w) { if (c.Length != w.Length) { throw new ArgumentException("c.Length != w.Length"); } if (c.Length == 0) { return(ColorBgra.FromUInt32(0)); } long wsum = 0; long asum = 0; for (int i = 0; i < w.Length; ++i) { wsum += w[i]; asum += c[i].A * w[i]; } uint a = (uint)((asum + (wsum >> 1)) / wsum); long b; long g; long r; if (a == 0) { b = 0; g = 0; r = 0; } else { b = 0; g = 0; r = 0; for (int i = 0; i < c.Length; ++i) { b += (long)c[i].A * c[i].B * w[i]; g += (long)c[i].A * c[i].G * w[i]; r += (long)c[i].A * c[i].R * w[i]; } b /= asum; g /= asum; r /= asum; } return(ColorBgra.FromUInt32((uint)b + ((uint)g << 8) + ((uint)r << 16) + ((uint)a << 24))); }
/// <summary> /// Constructs a MaskSurface by copying the given region-of-interest from an Image. /// </summary> /// <param name="source">The Surface to copy pixels from.</param> /// <param name="roi">Defines the Region from which to copy pixels from the Image.</param> public MaskedSurface(Surface source, PdnRegion roi) { PdnRegion roiClipped = (PdnRegion)roi.Clone(); roiClipped.Intersect(source.Bounds); Rectangle boundsClipped = roiClipped.GetBoundsInt(); this.surface = new Surface(boundsClipped.Size); this.surface.Clear(ColorBgra.FromUInt32(0x00ffffff)); Rectangle rect = boundsClipped; Point dstOffset = new Point(rect.X - boundsClipped.X, rect.Y - boundsClipped.Y); this.surface.CopySurface(source, dstOffset, rect); this.region = roiClipped; SetPathField(PdnGraphicsPath.FromRegion(this.region)); }
/// <summary> /// Constructs a MaskSurface by copying the given region-of-interest from an Image. /// </summary> /// <param name="source">The Surface to copy pixels from.</param> /// <param name="roi">Defines the Region from which to copy pixels from the Image.</param> public MaskedSurface(Surface source, PdnRegion roi) { PdnRegion roiClipped = (PdnRegion)roi.Clone(); roiClipped.Intersect(source.Bounds); Rectangle boundsClipped = roiClipped.GetBoundsInt(); this.SurfaceReadOnly = new Surface(boundsClipped.Size); this.SurfaceReadOnly.Clear(ColorBgra.FromUInt32(0x00ffffff)); Rectangle rect = boundsClipped; Point dstOffset = new Point(rect.X - boundsClipped.X, rect.Y - boundsClipped.Y); this.SurfaceReadOnly.CopySurface(source, dstOffset, rect); this.region = roiClipped; // TODO: FromRegion() is a VERY expensive call for what we are doing! PdnGraphicsPath newPath = PdnGraphicsPath.FromRegion(this.region); SetPathField(newPath); }
public override ColorBgra Apply(ColorBgra color) { return(ColorBgra.FromUInt32(color.Bgra | 0xff000000)); }
public override ColorBgra Apply(ColorBgra color) { return(ColorBgra.FromUInt32((color.Bgra & 0x00ffffff) + addValue)); }
public static ColorBgra ParseHexString(string hexString) { uint value = Convert.ToUInt32(hexString, 16); return(ColorBgra.FromUInt32(value)); }