private void ApplyAlpha(ManagedImage dest, VisualAlphaParam param, float val) { ManagedImage src = LoadResourceLayer(param.TGAFile); if (dest == null || src == null || src.Alpha == null) { return; } if ((dest.Channels & ManagedImage.ImageChannels.Alpha) == 0) { dest.ConvertChannels(ManagedImage.ImageChannels.Alpha | dest.Channels); } if (dest.Width != src.Width || dest.Height != src.Height) { try { src.ResizeNearestNeighbor(dest.Width, dest.Height); } catch (Exception) { return; } } for (int i = 0; i < dest.Alpha.Length; i++) { byte alpha = src.Alpha[i] <= ((1 - val) * 255) ? (byte)0 : (byte)255; if (alpha != 255) { } if (param.MultiplyBlend) { dest.Alpha[i] = (byte)((dest.Alpha[i] * alpha) >> 8); } else { if (alpha > dest.Alpha[i]) { dest.Alpha[i] = alpha; } } } }
private void ApplyAlpha(ManagedImage dest, VisualAlphaParam param, float val) { ManagedImage src = LoadResourceLayer(param.TGAFile); if (dest == null || src == null || src.Alpha == null) return; if ((dest.Channels & ManagedImage.ImageChannels.Alpha) == 0) { dest.ConvertChannels(ManagedImage.ImageChannels.Alpha | dest.Channels); } if (dest.Width != src.Width || dest.Height != src.Height) { try { src.ResizeNearestNeighbor(dest.Width, dest.Height); } catch (Exception) { return; } } for (int i = 0; i < dest.Alpha.Length; i++) { byte alpha = src.Alpha[i] <= ((1 - val) * 255) ? (byte)0 : (byte)255; if (alpha != 255) { } if (param.MultiplyBlend) { dest.Alpha[i] = (byte)((dest.Alpha[i] * alpha) >> 8); } else { if (alpha > dest.Alpha[i]) { dest.Alpha[i] = alpha; } } } }