public HeightFieldObject(Vector3D origin, MaterialShader shader, Vector2D size, Bitmap bitmapSrc)
: base(origin, shader, -1)
{
this.bitmapSrc = bitmapSrc;
// calculate bounds
areaExtent = size;
Vector2D halfSize = size * 0.5;
areaStart = origin - halfSize;
areaEnd = origin + halfSize;
double szLen = size.Length();
radius = Math.Sqrt((szLen * szLen) + (1.1 * 1.1)) / 2;
hField = HeightField.FromBitmap(bitmapSrc);
onePx = new Vector2D(areaExtent.X / hField.Width, areaExtent.Y / hField.Height);
this.origin.Y = 0.5;
zMin = 0;
zTop = 1;
rectangles = new Rectangle3D[]
{
new Rectangle3D(new Vector3D(areaStart.X, zTop, areaStart.Y), new Vector3D(areaEnd.X, zTop, areaEnd.Y),
new PlaneD(new Vector3D(0, 1, 0), -zTop)), // top
new Rectangle3D(new Vector3D(areaStart.X, zMin, areaStart.Y), new Vector3D(areaEnd.X, zMin, areaEnd.Y),
new PlaneD(new Vector3D(0, -1, 0), zMin)), // bottom
new Rectangle3D(new Vector3D(areaStart.X, zMin, areaStart.Y), new Vector3D(areaStart.X, zTop, areaEnd.Y),
new PlaneD(new Vector3D(-1, 0, 0), halfSize.X)), // left
new Rectangle3D(new Vector3D(areaEnd.X, zMin, areaStart.Y), new Vector3D(areaEnd.X, zTop, areaEnd.Y),
new PlaneD(new Vector3D(1, 0, 0), -halfSize.X)), // right
new Rectangle3D(new Vector3D(areaStart.X, zMin, areaStart.Y), new Vector3D(areaEnd.X, zTop, areaStart.Y),
new PlaneD(new Vector3D(0, 0, -1), halfSize.Y)), // front
new Rectangle3D(new Vector3D(areaStart.X, zMin, areaEnd.Y), new Vector3D(areaEnd.X, zTop, areaEnd.Y),
new PlaneD(new Vector3D(0, 0, 1), -halfSize.Y)), // back
};
}
public static HeightField FromBitmap(Bitmap bitmap)
{
HeightField hField = new HeightField(bitmap.Width, bitmap.Height);
BitmapData data = bitmap.LockBits(new Rectangle(0, 0, bitmap.Width, bitmap.Height), ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb);
unsafe
{
ARGB_32Bit *pixels = (ARGB_32Bit *)data.Scan0.ToPointer();
int dataIdx = 0;
for (int y = 0; y < bitmap.Height; y++)
{
for (int x = 0; x < bitmap.Width; x++)
{
hField.values[dataIdx++] = (pixels->R + pixels->G + pixels->B) / 765f;
pixels++;
}
}
}
bitmap.UnlockBits(data);
return(hField);
}
public HeightFieldObject(Vector3D origin, MaterialShader shader, Vector2D size, Bitmap bitmapSrc)
: base(origin, shader, -1)
{
this.bitmapSrc = bitmapSrc;
// calculate bounds
areaExtent = size;
Vector2D halfSize = size * 0.5;
areaStart = origin - halfSize;
areaEnd = origin + halfSize;
double szLen = size.Length();
radius = Math.Sqrt((szLen * szLen) + (1.1 * 1.1)) / 2;
hField = HeightField.FromBitmap(bitmapSrc);
onePx = new Vector2D(areaExtent.X / hField.Width, areaExtent.Y / hField.Height);
this.origin.Y = 0.5;
zMin = 0;
zTop = 1;
rectangles = new Rectangle3D[]
{
new Rectangle3D(new Vector3D(areaStart.X, zTop, areaStart.Y), new Vector3D(areaEnd.X, zTop, areaEnd.Y),
new PlaneD(new Vector3D(0, 1, 0), -zTop)), // top
new Rectangle3D(new Vector3D(areaStart.X, zMin, areaStart.Y), new Vector3D(areaEnd.X, zMin, areaEnd.Y),
new PlaneD(new Vector3D(0, -1, 0), zMin)), // bottom
new Rectangle3D(new Vector3D(areaStart.X, zMin, areaStart.Y), new Vector3D(areaStart.X, zTop, areaEnd.Y),
new PlaneD(new Vector3D(-1, 0, 0), halfSize.X)), // left
new Rectangle3D(new Vector3D(areaEnd.X, zMin, areaStart.Y), new Vector3D(areaEnd.X, zTop, areaEnd.Y),
new PlaneD(new Vector3D(1, 0, 0), -halfSize.X)), // right
new Rectangle3D(new Vector3D(areaStart.X, zMin, areaStart.Y), new Vector3D(areaEnd.X, zTop, areaStart.Y),
new PlaneD(new Vector3D(0, 0, -1), halfSize.Y)), // front
new Rectangle3D(new Vector3D(areaStart.X, zMin, areaEnd.Y), new Vector3D(areaEnd.X, zTop, areaEnd.Y),
new PlaneD(new Vector3D(0, 0, 1), -halfSize.Y)), // back
};
}
public static HeightField FromBitmap(Bitmap bitmap)
{
HeightField hField = new HeightField(bitmap.Width, bitmap.Height);
BitmapData data = bitmap.LockBits(new Rectangle(0, 0, bitmap.Width, bitmap.Height), ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb);
unsafe
{
ARGB_32Bit* pixels = (ARGB_32Bit*)data.Scan0.ToPointer();
int dataIdx = 0;
for (int y = 0; y < bitmap.Height; y++)
{
for (int x = 0; x < bitmap.Width; x++)
{
hField.values[dataIdx++] = (pixels->R + pixels->G + pixels->B) / 765f;
pixels++;
}
}
}
bitmap.UnlockBits(data);
return hField;
}
