public WorkerThreadInit(Bitmap im, int wid, int hei, int threadNo, int threads)
{
image = im;
id = threadNo;
width = wid;
height = hei;
sel = (n) => (n % threads) == threadNo;
}
public WorkerThreadInit(IRenderer r, Bitmap im, int wid, int hei, int threadNo, int threads)
{
rend = r;
image = im;
id = threadNo;
width = wid;
height = hei;
sel = (n) => (n % threads) == threadNo;
}
public WorkerThreadInit(IRenderer r, ITimeDependent sc, ITimeDependent imf, Bitmap im, int wid, int hei, int threadNo, int threads)
{
scene = sc;
imfunc = imf;
rend = r;
image = im;
id = threadNo;
width = wid;
height = hei;
sel = (n) => (n % threads) == threadNo;
}
/// <summary>
/// Renders the given rectangle into the given raster image.
/// Has to be re-entrant since this code is started in multiple parallel threads.
/// </summary>
/// <param name="image">Pre-initialized raster image.</param>
/// <param name="sel">Selector for this working thread.</param>
public virtual void RenderRectangle(Bitmap image, int x1, int y1, int x2, int y2, ThreadSelector sel)
{
bool lead = sel(0L);
if (lead &&
ProgressData != null)
{
lock (ProgressData)
{
ProgressData.Finished = 0.0f;
ProgressData.Message = "";
}
}
double[] color = new double[3]; // pixel color
// run several phases of image rendering:
int cell = 32; // cell size
while (cell > 1 && cell > Adaptive)
{
cell >>= 1;
}
int initCell = cell;
int x, y;
bool xParity, yParity;
float total = (x2 - x1) * (y2 - y1);
long counter = 0L;
long units = 0;
do // do one phase
{
for (y = y1, yParity = false;
y < y2; // one image row
y += cell, yParity = !yParity)
{
for (x = x1, xParity = false;
x < x2; // one image cell
x += cell, xParity = !xParity)
{
if (cell == initCell ||
xParity || yParity) // process the cell
{
if (!sel(counter++))
{
continue;
}
// determine sample color ..
RenderPixel(x, y, color);
if (Gamma <= 0.001)
{
for (int b = 0; b < color.Length; b++)
{
color[b] = Arith.Clamp(color[b], 0.0, 1.0);
}
}
// .. and render it:
Color c = Color.FromArgb((int)(color [0] * 255.0),
(int)(color [1] * 255.0),
(int)(color [2] * 255.0));
lock (image)
{
if (cell == 1)
{
image.SetPixel(x, y, c);
}
else
{
int xMax = x + cell;
if (xMax > x2)
{
xMax = x2;
}
int yMax = y + cell;
if (yMax > y2)
{
yMax = y2;
}
for (int iy = y; iy < yMax; iy++)
{
for (int ix = x; ix < xMax; ix++)
{
image.SetPixel(ix, iy, c);
}
}
}
}
if ((++units & 63L) == 0L &&
ProgressData != null)
{
lock (ProgressData)
{
if (!ProgressData.Continue)
{
return;
}
if (lead)
{
ProgressData.Finished = counter / total;
ProgressData.Sync(image);
}
}
}
}
}
}
} while ((cell >>= 1) > 0); // do one phase
}
/// <summary>
/// Renders the given rectangle into the given raster image.
/// Has to be re-entrant since this code is started in multiple parallel threads.
/// </summary>
/// <param name="image">Pre-initialized raster image.</param>
/// <param name="sel">Selector for this working thread.</param>
/// <param name="rnd">Thread-specific random generator.</param>
public virtual void RenderRectangle( Bitmap image, int x1, int y1, int x2, int y2, ThreadSelector sel, RandomJames rnd )
{
bool lead = sel( 0L );
if ( lead &&
ProgressData != null )
lock ( ProgressData )
{
ProgressData.Finished = 0.0f;
ProgressData.Message = "";
}
double[] color = new double[ 3 ]; // pixel color
// run several phases of image rendering:
int cell = 32; // cell size
while ( cell > 1 && cell > Adaptive )
cell >>= 1;
int initCell = cell;
int x, y;
bool xParity, yParity;
float total = (x2 - x1) * (y2 - y1);
long counter = 0L;
long units = 0;
do // do one phase
{
for ( y = y1, yParity = false;
y < y2; // one image row
y += cell, yParity = !yParity )
for ( x = x1, xParity = false;
x < x2; // one image cell
x += cell, xParity = !xParity )
if ( cell == initCell ||
xParity || yParity ) // process the cell
{
if ( !sel( counter++ ) )
continue;
// determine sample color ..
RenderPixel( x, y, color, rnd );
if ( Gamma <= 0.001 )
for ( int b = 0; b < color.Length; b++ )
color[ b ] = Arith.Clamp( color[ b ], 0.0, 1.0 );
// .. and render it:
Color c = Color.FromArgb( (int)(color[ 0 ] * 255.0),
(int)(color[ 1 ] * 255.0),
(int)(color[ 2 ] * 255.0) );
lock ( image )
{
if ( cell == 1 )
image.SetPixel( x, y, c );
else
{
int xMax = x + cell;
if ( xMax > x2 )
xMax = x2;
int yMax = y + cell;
if ( yMax > y2 )
yMax = y2;
for ( int iy = y; iy < yMax; iy++ )
for ( int ix = x; ix < xMax; ix++ )
image.SetPixel( ix, iy, c );
}
}
if ( (++units & 63L) == 0L &&
ProgressData != null )
lock ( ProgressData )
{
if ( !ProgressData.Continue )
return;
if ( lead )
{
ProgressData.Finished = counter / total;
ProgressData.Sync( image );
}
}
}
}
while ( (cell >>= 1) > 0 ); // do one phase
}
