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some improvements to sculptmap alpha handling and LOD

slimupdates
dahlia 2010-03-12 21:21:28 -08:00
parent 4b81393274
commit 1d14cf8c3f
1 changed files with 645 additions and 627 deletions
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84
OpenSim/Region/Physics/Meshing/SculptMesh.cs
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@ -53,42 +53,49 @@ namespace PrimMesher
public enum SculptType { sphere = 1, torus = 2, plane = 3, cylinder = 4 };
#if SYSTEM_DRAWING
// private Bitmap ScaleImage(Bitmap srcImage, float scale)
// {
// int sourceWidth = srcImage.Width;
// int sourceHeight = srcImage.Height;
// int sourceX = 0;
// int sourceY = 0;
private Bitmap ScaleImage(Bitmap srcImage, float scale, bool removeAlpha)
{
int sourceWidth = srcImage.Width;
int sourceHeight = srcImage.Height;
int sourceX = 0;
int sourceY = 0;
// int destX = 0;
// int destY = 0;
// int destWidth = (int)(srcImage.Width * scale);
// int destHeight = (int)(srcImage.Height * scale);
int destX = 0;
int destY = 0;
int destWidth = (int)(srcImage.Width * scale);
int destHeight = (int)(srcImage.Height * scale);
// if (srcImage.PixelFormat == PixelFormat.Format32bppArgb)
// for (int y = 0; y < srcImage.Height; y++)
// for (int x = 0; x < srcImage.Width; x++)
// {
// Color c = srcImage.GetPixel(x, y);
// srcImage.SetPixel(x, y, Color.FromArgb(255, c.R, c.G, c.B));
// }
Bitmap scaledImage;
// Bitmap scaledImage = new Bitmap(destWidth, destHeight,
// PixelFormat.Format24bppRgb);
if (removeAlpha)
{
if (srcImage.PixelFormat == PixelFormat.Format32bppArgb)
for (int y = 0; y < srcImage.Height; y++)
for (int x = 0; x < srcImage.Width; x++)
{
Color c = srcImage.GetPixel(x, y);
srcImage.SetPixel(x, y, Color.FromArgb(255, c.R, c.G, c.B));
}
// scaledImage.SetResolution(96.0f, 96.0f);
scaledImage = new Bitmap(destWidth, destHeight,
PixelFormat.Format24bppRgb);
}
else
scaledImage = new Bitmap(srcImage, destWidth, destHeight);
// Graphics grPhoto = Graphics.FromImage(scaledImage);
// grPhoto.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.Low;
scaledImage.SetResolution(96.0f, 96.0f);
// grPhoto.DrawImage(srcImage,
// new Rectangle(destX, destY, destWidth, destHeight),
// new Rectangle(sourceX, sourceY, sourceWidth, sourceHeight),
// GraphicsUnit.Pixel);
Graphics grPhoto = Graphics.FromImage(scaledImage);
grPhoto.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.Low;
// grPhoto.Dispose();
// return scaledImage;
// }
grPhoto.DrawImage(srcImage,
new Rectangle(destX, destY, destWidth, destHeight),
new Rectangle(sourceX, sourceY, sourceWidth, sourceHeight),
GraphicsUnit.Pixel);
grPhoto.Dispose();
return scaledImage;
}
public SculptMesh SculptMeshFromFile(string fileName, SculptType sculptType, int lod, bool viewerMode)
@ -268,6 +275,11 @@ namespace PrimMesher
for (imageY = imageYStart; imageY < imageYEnd; imageY++)
{
Color c = bitmap.GetPixel(imageX, imageY);
if (c.A != 255)
{
bitmap.SetPixel(imageX, imageY, Color.FromArgb(255, c.R, c.G, c.B));
c = bitmap.GetPixel(imageX, imageY);
}
rSum += c.R;
gSum += c.G;
bSum += c.B;
@ -298,12 +310,18 @@ namespace PrimMesher
if (sculptType == SculptType.plane)
invert = !invert;
float sourceScaleFactor = (float)(lod) / (float)Math.Sqrt(sculptBitmap.Width * sculptBitmap.Height);
float sculptBitmapLod = (float)Math.Sqrt(sculptBitmap.Width * sculptBitmap.Height);
int scale = (int)(1.0f / sourceScaleFactor);
if (scale < 1) scale = 1;
float sourceScaleFactor = (float)(lod) / sculptBitmapLod;
_SculptMesh(bitmap2Coords(sculptBitmap, scale, mirror), sculptType, viewerMode, mirror, invert);
float fScale = 1.0f / sourceScaleFactor;
int iScale = (int)fScale;
if (iScale < 1) iScale = 1;
if (iScale > 2 && iScale % 2 == 0)
_SculptMesh(bitmap2Coords(ScaleImage(sculptBitmap, 64.0f / sculptBitmapLod, true), 64 / lod, mirror), sculptType, viewerMode, mirror, invert);
else
_SculptMesh(bitmap2Coords(sculptBitmap, iScale, mirror), sculptType, viewerMode, mirror, invert);
}
#endif