public void LoadDataFromBitmapFile(string path)
{
try
{
using (var bmpTemp = new Bitmap(path))
{
LockBitmap lockBitmap = new LockBitmap(new Bitmap(bmpTemp), false);
int width = lockBitmap.Width, height = lockBitmap.Height;
Data = new RenderData(width, height);
for (int i = 0; i < width * height; i++)
{
Data.TextureMap[i] = lockBitmap.Data[i * 4 + 0];
Data.HeightMap[i] = lockBitmap.Data[i * 4 + 1];
}
}
Console.WriteLine("LoadData: " + path);
}
catch (Exception e)
{
Console.WriteLine("LoadData: " + path + " Failed " + e.Message);
}
}
//Rendering the part of image from heightmap (elevate and apply textures & shadows)
private void elevate(RenderData input, LockBitmap resultLB, float start, float end)
{
byte[] resultRGB = resultLB.Data;
int widthSrc = input.Width, heightSrc = input.Height, widthDst = resultLB.Width, heightDst = resultLB.Height;
for (int ix = (int)(widthSrc * start); ix < (int)(widthSrc * end); ix++) //Upwards
{
for (int iy = (heightSrc - 1); iy >= 0; iy -= 1) //Downwards
{
//get positions
int offSrc = (ix + iy * widthSrc);
int offDst = (ix + iy / 2 * widthDst) * 4;
//height > 0
if (input.HeightMap[offSrc] > 0)
{
//get colorList & find color pos
byte[] refColor = TexturePack.Textures[input.TextureMap[offSrc]].Data;
int colorSize = refColor[0] - refColor[1];
int colorStart = 0;
int colorListPos = -1;
int colorPos = 0;
while (colorStart < input.HeightMap[offSrc])
{
colorListPos++;
if (colorListPos >= colorSize)
{
colorListPos = 0;
}
colorStart += refColor[2 + colorListPos * 5];
}
colorPos = refColor[2 + colorListPos * 5] - (colorStart - input.HeightMap[offSrc]);
int iz = input.HeightMap[offSrc];
while (iz > 0) //Downwards
{
//Repeat until color is changed | ground reached
while (iz > 0 && colorPos > 0)
{
//save
if ((iy + heightExcess) - iz >= 0)
{
//get position on z axe
int offDstZ = offDst - (widthDst * iz * 4) + widthDst * heightExcess * 4; //pos + curent height
//pixel not yet drawn
if (resultRGB[offDstZ + 3] == 0)
{
//draw pixel
float shadow = 1f;
if (iz < input.ShadowMap[offSrc] + 1)
{
shadow = 0.75f;
}
//resultRGB[offDstZ + 0] = (byte)(255 * shadow);//b
//resultRGB[offDstZ + 1] = (byte)(255 * (iz % 5) * shadow);//g
//resultRGB[offDstZ + 2] = (byte)(0 * shadow);//r
//resultRGB[offDstZ + 3] = (byte)(255);//a
resultRGB[offDstZ + 0] = (byte)(refColor[5 + colorListPos * 5] * shadow); //b
resultRGB[offDstZ + 1] = (byte)(refColor[4 + colorListPos * 5] * shadow); //g
resultRGB[offDstZ + 2] = (byte)(refColor[3 + colorListPos * 5] * shadow); //r
resultRGB[offDstZ + 3] = (byte)(refColor[6 + colorListPos * 5]); //a
}
else
{
iz = 0;
break;
}
}
//get next z & color pos
iz--;
colorPos--;
}
//get next color
colorListPos--;
if (colorListPos < 0)
{
colorListPos = colorSize - 1;
}
colorPos = refColor[2 + colorListPos * 5];
}
}
}
}
}