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RenderThds.pas
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RenderThds.pas
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unit RenderThds;
interface
{$include isthreaded.inc}
{$mode delphi}
uses
{$IFDEF UNIX}
lclintf,//critical sections
{$ELSE}
Windows,
{$ENDIF}
ComCtrls,Classes, Graphics, ExtCtrls, define_types,GraphicsMathLibrary
,sysutils;
const
kSh = 10; //bits to shift - precision for integers to simulate floats
var
ThreadsRunning: Integer = 0;
type
TRotateVals = record
InSliceSz,ZDimStart,ZDimEnd,YDimStart,YDimEnd,OutPivot,OutDim,OutSliceSz: integer;
XPivotInU2,YDimIN,YPivotInU2,ZDimIN,ZPivotInU2,XDimIN: integer;
XPivotIn,YPivotIn,ZPivotIn: integer;
Xxra,Xyra,Xzra: longintp;
//RenderCutout: boolean;
end;
TRenderThread = class(TThread)
private
lBarX: TProgressBar;
lRV: TRotateVals;
lMx : TMatrix;
lThreadX: integer;
lRenderCutoutX: boolean;
lBuffInX,lBuffOutX: ByteP;
lPosX: integer;
procedure DoVisualSwap;
protected
procedure Execute; override;
procedure VisualProg(lPos: Integer);
procedure Rotate(lThread: integer; l: TRotateVals; var lM: TMatrix; lRenderCutout: boolean; var lBuffIn,lBuffOut: ByteP); virtual; abstract;
public
constructor Create(lBar: TProgressBar; lThread: integer; l: TRotateVals; var lM: TMatrix; lRenderCutout: boolean; var lBuffIn,lBuffOut: ByteP);
end;
{ NearestNeighbor }
TNNRender = class(TRenderThread)
protected
procedure Rotate(lThread: integer;l: TRotateVals; var lM: TMatrix; lRenderCutout: boolean; var lBuffIn,lBuffOut: ByteP); override;
end;
{ Trilinear }
TTriRender = class(TRenderThread)
protected
procedure Rotate(lThread: integer;l: TRotateVals; var lM: TMatrix; lRenderCutout: boolean; var lBuffIn,lBuffOut: ByteP); override;
end;
implementation
uses Render;
var
{$IFDEF UNIX}
{$ifdef CPU64}
CritSect : QWord;
{$else}
CritSect : LongWord;
{$endif}
{$ELSE}
CritSect : TRTLCriticalSection;
{$ENDIF}
procedure ThreadDone;
begin
EnterCriticalSection(CritSect);
Dec(ThreadsRunning);
LeaveCriticalSection(CritSect);
end;
procedure TRenderThread.DoVisualSwap;
begin
{$IFDEF SHOWPROG}
lBarX.Position := lPosX;
{$ENDIF}
end;
procedure TRenderThread.VisualProg(lPos: Integer);
begin
lPosX := lPos;
{$IFDEF SHOWPROG}
{$IFDEF FPC}
Synchronize(DoVisualSwap);
{$ELSE}
Synchronize(DoVisualSwap);
{$ENDIF}
{$ENDIF}
end;
constructor TRenderThread.Create(lBar: TProgressBar;lThread: integer;l: TRotateVals; var lM: TMatrix; lRenderCutout: boolean; var lBuffIn,lBuffOut: ByteP);
begin
lBarX := lBar;
lRV := l;
lMx := lM;
lRenderCutoutX := lRenderCutout;
lBuffInX := lBuffIn;
lBuffOutX := lBuffOut;
lThreadX := lThread;
FreeOnTerminate := True;
inherited Create(False);
end;
// The Execute method is called when the thread starts
procedure TRenderThread.Execute;
begin
Rotate(lThreadX,lRV,lMx,lRenderCutoutX, lBuffInX,lBuffOutX);
end;
procedure FindXBounds (var lXMax,lXMin: integer;
lXDimIN,lYxiZxi,lXPivotInU2,lYDimIN,lYyiZyi,lYPivotInU2,lZDimIN,lYziZzi,lZPivotInU2,lOutDim:integer;
lXxra,lXyra,lXzra : LongIntP);
var
lXo,lYo,lZo,Xo_at_one,Xo_at_two,Xo_grad,Xo_offs,lShiftedOne : integer;
when_it_is_zero, when_it_is_max: double;
lReallySmall {, debugx0, debugx1, debugy0, debugy1, debugz0, debugz1}: double;
l2: integer;
begin
lXMax := lOutDim;
lXMin := 1;
l2 := 2;
lShiftedOne := 1 shl ksh;
lReallySmall := 1e-6;
Xo_at_one := lXxRA^[1] +lYxiZxi + (lXPivotInU2 shl kSh);
Xo_at_two := lXxRA^[l2] +lYxiZxi + (lXPivotInU2 shl kSh);
Xo_grad := Xo_at_two - Xo_at_one; Xo_offs := Xo_at_one - Xo_grad;
if Abs(Xo_grad) > lReallySmall then begin
when_it_is_zero := (lShiftedOne-Xo_offs) / Xo_grad;
when_it_is_max := ((lXDimIn shl kSh)-Xo_offs) / Xo_grad;
//debugx0 := when_it_is_zero; debugx1 := when_it_is_max;
if (when_it_is_zero < when_it_is_max) then begin
if when_it_is_zero > lXMin then lXMin := Round(when_it_is_zero+0.5);
if when_it_is_max < lXMax then lXMax := Round(when_it_is_max-0.5);
end else begin
if when_it_is_max > lXMin then lXMin := Round(when_it_is_max+0.5);
if when_it_is_zero < lXMax then lXMax := Round(when_it_is_zero-0.5);
end;
end;
Xo_at_one := lXyRA^[1] +lYyiZyi + (lYPivotInU2 shl kSh);
Xo_at_two := lXyRA^[l2] +lYyiZyi + (lYPivotInU2 shl kSh);
Xo_grad := Xo_at_two - Xo_at_one; Xo_offs := Xo_at_one - Xo_grad;
if Abs(Xo_grad) > lReallySmall then begin
when_it_is_zero := (lShiftedOne-Xo_offs) / Xo_grad;
when_it_is_max := ((lYDimIn shl kSh)-Xo_offs) / Xo_grad;
//debugy0 := when_it_is_zero; debugy1 := when_it_is_max;
if (when_it_is_zero < when_it_is_max) then begin
if when_it_is_zero > lXMin then lXMin := Round(when_it_is_zero+0.5);
if when_it_is_max < lXMax then lXMax := Round(when_it_is_max-0.5);
end else begin
if when_it_is_max > lXMin then lXMin := Round(when_it_is_max+0.5);
if when_it_is_zero < lXMax then lXMax := Round(when_it_is_zero-0.5);
end;
end;
Xo_at_one := lXzRA^[1] +lYziZzi + (lZPivotInU2 shl kSh);
Xo_at_two := lXzRA^[l2] +lYziZzi + (lZPivotInU2 shl kSh);
Xo_grad := Xo_at_two - Xo_at_one; Xo_offs := Xo_at_one - Xo_grad;
if Abs(Xo_grad) > lReallySmall then begin
when_it_is_zero := (lShiftedOne-Xo_offs) / Xo_grad;
when_it_is_max := ((lZDimIn shl kSh)-Xo_offs) / Xo_grad;
//debugz0 := when_it_is_zero; debugz1 := when_it_is_max;
if (when_it_is_zero < when_it_is_max) then begin
if when_it_is_zero > lXMin then lXMin := Round(when_it_is_zero+0.5);
if when_it_is_max < lXMax then lXMax := Round(when_it_is_max-0.5);
end else begin
if when_it_is_max > lXMin then lXMin := Round(when_it_is_max+0.5);
if when_it_is_zero < lXMax then lXMax := Round(when_it_is_zero-0.5);
end;
end;
// even with all the care about rounding, it's possible that we've got the
// edges wrong in ultra-high-gradient cases
if lXMin < lXMax then begin
while true do begin
lXo := ((lXxRA^[lXMin] +lYxiZxi) shr kSh)+lXPivotInU2;
lYo := ((lXyRA^[lXMin] +lYyiZyi) shr kSh)+lYPivotInU2;
lZo := ((lXzRA^[lXMin] +lYziZzi) shr kSh)+lZPivotInU2;
if (lXMin < lXMax) and ((lXo<1) or (lXo>lXDimIn) or (lYo<1) or (lYo>lYDimIn) or (lZo<1) or (lZo>lZDimIn)) then begin
lXMin := 1+lXMin;
end else
break;
end;
while true do begin
lXo := ((lXxRA^[lXMax] +lYxiZxi) shr kSh)+lXPivotInU2;
lYo := ((lXyRA^[lXMax] +lYyiZyi) shr kSh)+lYPivotInU2;
lZo := ((lXzRA^[lXMax] +lYziZzi) shr kSh)+lZPivotInU2;
if (lXMax > lXMin) and ((lXo<1) or (lXo>lXDimIn) or (lYo<1) or (lYo>lYDimIn) or (lZo<1) or (lZo>lZDimIn)) then begin
lXMax := lXMax-1;
end else
break;
end;
end;
end;//proc findXBounds
//Nearest Neighbor
procedure TNNRender.Rotate (lThread: integer;l: TRotateVals; var lM: TMatrix; lRenderCutout: boolean; var lBuffIn,lBuffOut: ByteP);
const kshx = ksh shr 1;
var
lZxi,lZyi,lZzi,lYxiZxi,lYyiZyi,lYziZzi,lZ,lY,lX,lOutPos,
lMaxX,lMinX,lXo,lYo,lZo: integer;
begin
for lZ := l.ZDimStart to l.ZDimEnd do begin
lZxi := round(lZ*lM.matrix[1,3]* (1 shl kSh) );
lZyi := round(lZ*lM.matrix[2,3]* (1 shl kSh) );
lZzi := round(lZ*lM.matrix[3,3]* (1 shl kSh) );
if {(RenderForm.RenderRefreshTimer.enabled) or} (Terminated) then begin
ThreadDone;
exit;
end;
{$IFDEF SHOWPROG} //flicker with lazarus
if (lThread = 1) and ((lZ mod 30)=0) then
VisualProg(lZ);
{$ENDIF}
//ImgForm.ProgressBar1.Position := lZ;
for lY := l.YDimStart to l.YDimEnd do begin
lYxiZxi := round(lY * lM.matrix[1,2]* (1 shl kSh) )+lZxi;
lYyiZyi := round(lY * lM.matrix[2,2]* (1 shl kSh) )+lZyi;
lYziZzi := round(lY * lM.matrix[3,2]* (1 shl kSh) )+lZzi;
lOutPos := ((lZ+l.OutPivot-1)*l.OutSliceSz)+((lY+l.OutPivot-1)*l.Outdim);
//if gAbortRender > 0 then goto 345;
FindXBounds (lMaxX,lMinX,l.XDimIN,lYxiZxi,l.XPivotInU2,l.YDimIN,lYyiZyi,l.YPivotInU2,l.ZDimIN,lYziZzi,l.ZPivotInU2,l.OutDim,l.Xxra,l.Xyra,l.Xzra);
if lMaxX > lMinX then
for lX := lMinX to lMaxX do begin
lXo := ((l.XxRA^[lX] +lYxiZxi) shr kSh)+l.XPivotInU2;
lYo := ((l.XyRA^[lX] +lYyiZyi) shr kSh)+l.YPivotInU2;
lZo := ((l.XzRA^[lX] +lYziZzi) shr kSh)+l.ZPivotInU2;
{lXo := (lXo shr 1) + 1;
lYo := lYo shr 1;
lZo := lZo shr 1;}
lBuffOut[lX+lOutPos] := lBuffIn[(lXo)+((lYo-1)*l.XdimIn)+((lZo-1)*l.InSliceSz)]
end;
end; //for y
end; //for z
ThreadDone;
end;
procedure TTriRender.Rotate (lThread: integer;l: TRotateVals; var lM: TMatrix; lRenderCutout: boolean; var lBuffIn,lBuffOut: ByteP);
//Trilinear - this uses integer math, and on CoreDuo CPUs is 30% faster than Floating Point
//For precision, integers are multiplied by kSh (~2^10 bits) to simulate floats
// However, we will use 32-bit integers and the image intensity is 8 bit values,
// with the final interpolation multiplying X*Y*Z*intensity
// Therefore, this final interpolation adjusts kSh to be 2^8, avoiding overflow
var
lMi: TMatrixi;
lXr,lYr,lZr,lYxi,lYyi,lYzi,lXxi,lXyi,lXzi,lZxi,lZyi,lZzi,
lYxiZxi,lYyiZyi,lYziZzi,lZ,lY,lX,lOutPos,
lXPiv,lYPiv,lZPiv,lXrM1i,lYrM1i,lZrM1i,
lShr,lShl,lShlTo8,lShl8,
lMinZ,lMaxZ,lMinY,lMaxY,lMaxX,lMinX,lXo,lYo,lZo: integer;
begin
lShl := 1 shl kSh;
lShl8 := 1 shl 8; //8bit precision
lShlTo8 := (kSh - 8); //shr the kSh precision by this to get 8-bit precision
lShr := 24;//24-bits * 8 bit intensity = 32 bits
lXPiv := l.XPivotIn * lShl;
lYPiv := l.YPivotIn * lShl;
lZPiv := l.ZPivotIn * lShl;
for lX := 1 to 3 do
for lY := 1 to 3 do
lMi.matrix[lX,lY] := round(lM.matrix[lX,lY] * lShl);
if (lRenderCutout ) then begin //only separated to unroll IF rendercutout
for lZ := l.ZDimStart to l.ZDimEnd do begin
lZxi := (lZ*lMi.matrix[1,3] );
lZyi := (lZ*lMi.matrix[2,3] );
lZzi := (lZ*lMi.matrix[3,3] );
if {(RenderForm.RenderRefreshTimer.enabled) or} (Terminated) then begin
ThreadDone;
exit;
end;
{$IFDEF SHOWPROG} //flicker with lazarus
if (lThread = 1) and ((lZ mod 30)=0) then
VisualProg(lZ);
{$ENDIF}
for lY := l.YDimStart to l.YDimEnd do begin
lYxi := lY * lMi.matrix[1,2];
lYyi := lY * lMi.matrix[2,2];
lYzi := lY * lMi.matrix[3,2];
lYxiZxi := (lY * lMi.matrix[1,2] )+lZxi;
lYyiZyi := (lY * lMi.matrix[2,2] )+lZyi;
lYziZzi := (lY * lMi.matrix[3,2] )+lZzi;
FindXBounds (lMaxX,lMinX,l.XDimIN,lYxiZxi,l.XPivotInU2,l.YDimIN,lYyiZyi,l.YPivotInU2,l.ZDimIN,lYziZzi,l.ZPivotInU2,l.OutDim,l.Xxra,l.Xyra,l.Xzra);
lMaxX := lMaxX - l.OutPivot -1 ;
lMinX := lMinX - l.OutPivot+1;
if lMaxX > lMinX then
for lX := lMinX to lMaxX do begin
lXr := ( (lX*lMi.matrix[1,1])+lYxi+lZxi)+lXPiv;
lYr := ((lX*lMi.matrix[2,1])+lYyi+lZyi)+lYPiv;
lZr := ( (lX*lMi.matrix[3,1])+lYzi+lZzi)+lZPiv;
lXo := (lXr shr kSh);
lYo := (lYr shr kSh);
lZo := (lZr shr kSh);
if (lXo > 0) and (lXo < l.XDimIn)
and (lYo > 0) and (lYo < l.YDimIn) and
(lZo > 0) and (lZo < l.ZDimIn) then begin
lXr := (lXr- (lXo * lShl)) shr lShlTo8;
lYr := (lYr- (lYo * lShl)) shr lShlTo8;
lZr := (lZr- (lZo * lShl)) shr lShlTo8;
lXrM1i := lShl8-lXr;
lYrM1i := lShl8-lYr;
lZrM1i := lShl8-lZr;
lMinY := ((lYo-1)*l.XdimIn);
lMinZ := ((lZo-1)*l.InSliceSz);
lMaxY := ((lYo)*l.XdimIn);
lMaxZ := ((lZo)*l.InSliceSz);
lOutPos := ((lZ+l.OutPivot-1)*l.OutSliceSz)+((lY+l.OutPivot-1)*l.Outdim);
if {(lRenderCutout ) and} ((lBuffIn^[lXo+lMinY+lMinZ]=255) or (lBuffIn^[lXo+1+lMinY+lMinZ]=255)
or (lBuffIn^[lXo+lMaxY+lMinZ]=255) or (lBuffIn^[lXo+1+lMaxY+lMinZ]=255)
or (lBuffIn^[lXo+lMinY+lMaxZ]=255) or (lBuffIn^[lXo+1+lMinY+lMaxZ]=255)
or (lBuffIn^[lXo+lMaxY+lMaxZ]=255) or (lBuffIn^[lXo+1+lMaxY+lMaxZ]=255))
then lBuffOut^[lX+l.OutPivot+lOutPos] := 255
else
lBuffOut^[lX+l.OutPivot+lOutPos] := (
(lXrM1i*lYrM1i*lZrM1i *lBuffIn^[lXo+lMinY+lMinZ] )
+(lXr*lYrM1i*lZrM1i *lBuffIn^[lXo+1+lMinY+lMinZ])
+(lXrM1i*lYr*lZrM1i *lBuffIn^[lXo+lMaxY+lMinZ] )
+(lXrM1i*lYrM1i*lZr *lBuffIn^[lXo+lMinY+lMaxZ] )
+(lXr*lYr*lZrM1i *lBuffIn^[lXo+1+lMaxY+lMinZ] )
+(lXr*lYrM1i*lZr *lBuffIn^[lXo+1+lMinY+lMaxZ] )
+(lXrM1i*lYr*lZr *lBuffIn^[lXo+lMaxY+lMaxZ])
+(lXr*lYr*lZr *lBuffIn^[lXo+1+lMaxY+lMaxZ] )
) shr lShr;
end; //values in range
end; //for x
end; //for y
end; //for z
ThreadDone;
exit;
end; //if RenderCutout
for lZ := l.ZDimStart to l.ZDimEnd do begin
lZxi := (lZ*lMi.matrix[1,3] );
lZyi := (lZ*lMi.matrix[2,3] );
lZzi := (lZ*lMi.matrix[3,3] );
if {(RenderForm.RenderRefreshTimer.enabled) or} (Terminated) then begin
ThreadDone;
exit;
end;
{$IFDEF SHOWPROG} //flicker with lazarus
if (lThread = 1) and ((lZ mod 30)=0) then
VisualProg(lZ);
{$ENDIF}
for lY := l.YDimStart to l.YDimEnd do begin
lYxi := lY * lMi.matrix[1,2];
lYyi := lY * lMi.matrix[2,2];
lYzi := lY * lMi.matrix[3,2];
lYxiZxi := (lY * lMi.matrix[1,2] )+lZxi;
lYyiZyi := (lY * lMi.matrix[2,2] )+lZyi;
lYziZzi := (lY * lMi.matrix[3,2] )+lZzi;
FindXBounds (lMaxX,lMinX,l.XDimIN,lYxiZxi,l.XPivotInU2,l.YDimIN,lYyiZyi,l.YPivotInU2,l.ZDimIN,lYziZzi,l.ZPivotInU2,l.OutDim,l.Xxra,l.Xyra,l.Xzra);
lMaxX := lMaxX - l.OutPivot -1 ;
lMinX := lMinX - l.OutPivot+1;
if lMaxX > lMinX then
for lX := lMinX to lMaxX do begin
lXr := ( (lX*lMi.matrix[1,1])+lYxi+lZxi)+lXPiv;
lYr := ((lX*lMi.matrix[2,1])+lYyi+lZyi)+lYPiv;
lZr := ( (lX*lMi.matrix[3,1])+lYzi+lZzi)+lZPiv;
lXo := (lXr shr kSh);
lYo := (lYr shr kSh);
lZo := (lZr shr kSh);
if (lXo > 0) and (lXo < l.XDimIn)
and (lYo > 0) and (lYo < l.YDimIn) and
(lZo > 0) and (lZo < l.ZDimIn) then begin
lXr := (lXr- (lXo * lShl)) shr lShlTo8;
lYr := (lYr- (lYo * lShl)) shr lShlTo8;
lZr := (lZr- (lZo * lShl)) shr lShlTo8;
lXrM1i := lShl8-lXr;
lYrM1i := lShl8-lYr;
lZrM1i := lShl8-lZr;
lMinY := ((lYo-1)*l.XdimIn);
lMinZ := ((lZo-1)*l.InSliceSz);
lMaxY := ((lYo)*l.XdimIn);
lMaxZ := ((lZo)*l.InSliceSz);
lOutPos := ((lZ+l.OutPivot-1)*l.OutSliceSz)+((lY+l.OutPivot-1)*l.Outdim);
lBuffOut^[lX+l.OutPivot+lOutPos] :=(
(lXrM1i*lYrM1i*lZrM1i *lBuffIn^[lXo+lMinY+lMinZ] )
+(lXr*lYrM1i*lZrM1i *lBuffIn^[lXo+1+lMinY+lMinZ])
+(lXrM1i*lYr*lZrM1i *lBuffIn^[lXo+lMaxY+lMinZ] )
+(lXrM1i*lYrM1i*lZr *lBuffIn^[lXo+lMinY+lMaxZ] )
+(lXr*lYr*lZrM1i *lBuffIn^[lXo+1+lMaxY+lMinZ] )
+(lXr*lYrM1i*lZr *lBuffIn^[lXo+1+lMinY+lMaxZ] )
+(lXrM1i*lYr*lZr *lBuffIn^[lXo+lMaxY+lMaxZ])
+(lXr*lYr*lZr *lBuffIn^[lXo+1+lMaxY+lMaxZ] )
) shr lShr;
end; //values in range
end; //for x
end; //for y
end; //for z
ThreadDone;
end;
(*
// floating point version of the same algorithm...
procedure TTriRender.Rotate (lThread: integer;l: TRotateVals; var lM: TMatrix; lRenderCutout: boolean; var lBuffIn,lBuffOut: ByteP);
var
lXreal,lYreal,lZreal,lZx,lZy,lZz,lYx,lYy,lYz,lXrM1,lYrM1,lZrM1: single;
lXxi,lXyi,lXzi,lZxi,lZyi,lZzi,lYxiZxi,lYyiZyi,lYziZzi,lZ,lY,lX,lOutPos,
lMinZ,lMaxZ,lMinY,lMaxY,lMaxX,lMinX,lXo,lYo,lZo: integer;
begin
if (lRenderCutout ) then begin
for lZ := l.ZDimStart to l.ZDimEnd do begin
lZx := lZ*lM.matrix[1,3];
lZy := lZ*lM.matrix[2,3];
lZz := lZ*lM.matrix[3,3];
lZxi := round(lZ*lM.matrix[1,3]* (1 shl kSh) );
lZyi := round(lZ*lM.matrix[2,3]* (1 shl kSh) );
lZzi := round(lZ*lM.matrix[3,3]* (1 shl kSh) );
if RenderForm.RenderRefreshTimer.enabled then exit;//abort
if Terminated then exit; //goto 345;//abort
if (lThread = 1) and ((lZ mod 10)=0) then
VisualProg(lZ);
for lY := l.YDimStart to l.YDimEnd do begin
lYx := lY * lM.matrix[1,2];
lYy := lY * lM.matrix[2,2];
lYz := lY * lM.matrix[3,2];
lOutPos := ((lZ+l.OutPivot-1)*l.OutSliceSz)+((lY+l.OutPivot-1)*l.Outdim);
lYxiZxi := round(lY * lM.matrix[1,2]* (1 shl kSh) )+lZxi;
lYyiZyi := round(lY * lM.matrix[2,2]* (1 shl kSh) )+lZyi;
lYziZzi := round(lY * lM.matrix[3,2]* (1 shl kSh) )+lZzi;
FindXBounds (lMaxX,lMinX,l.XDimIN,lYxiZxi,l.XPivotInU2,l.YDimIN,lYyiZyi,l.YPivotInU2,l.ZDimIN,lYziZzi,l.ZPivotInU2,l.OutDim,l.Xxra,l.Xyra,l.Xzra);
lMaxX := lMaxX - l.OutPivot -1 ;
lMinX := lMinX - l.OutPivot+1;
if lMaxX > lMinX then
for lX := lMinX to lMaxX do begin
lXreal := ( (lX*lM.matrix[1,1])+lYx+lZx)+l.XPivotIn;
lYreal := ( (lX*lM.matrix[2,1])+lYy+lZy)+l.YPivotIn;
lZreal := ( (lX*lM.matrix[3,1])+lYz+lZz)+l.ZPivotIn;
lXo := trunc(lXreal);
lYo := trunc(lYreal);
lZo := trunc(lZreal);
if (lXo > 0) and (lXo < l.XDimIn)
and (lYo > 0) and (lYo < l.YDimIn) and
(lZo > 0) and (lZo < l.ZDimIn) then begin
lXreal := lXreal-lXo;
lYreal := lYreal-lYo;
lZreal := lZreal-lZo;
lXrM1 := 1-lXreal;
lYrM1 := 1-lYreal;
lZrM1 := 1-lZreal;
lMinY := ((lYo-1)*l.XdimIn);
lMinZ := ((lZo-1)*l.InSliceSz);
lMaxY := ((lYo)*l.XdimIn);
lMaxZ := ((lZo)*l.InSliceSz);
if {(l.RenderCutout ) and} ((lBuffIn^[lXo+lMinY+lMinZ]=255) or (lBuffIn^[lXo+1+lMinY+lMinZ]=255)
or (lBuffIn^[lXo+lMaxY+lMinZ]=255) or (lBuffIn^[lXo+1+lMaxY+lMinZ]=255)
or (lBuffIn^[lXo+lMinY+lMaxZ]=255) or (lBuffIn^[lXo+1+lMinY+lMaxZ]=255)
or (lBuffIn^[lXo+lMaxY+lMaxZ]=255) or (lBuffIn^[lXo+1+lMaxY+lMaxZ]=255))
then lBuffOut^[lX+l.OutPivot+lOutPos] := 255
else
lBuffOut^[lX+l.OutPivot+lOutPos] := round (
{all min} ( (lXrM1*lYrM1*lZrM1)*lBuffIn^[lXo+lMinY+lMinZ])
{x+1}+((lXreal*lYrM1*lZrM1)*lBuffIn^[lXo+1+lMinY+lMinZ])
{y+1}+((lXrM1*lYreal*lZrM1)*lBuffIn^[lXo+lMaxY+lMinZ])
{z+1}+((lXrM1*lYrM1*lZreal)*lBuffIn^[lXo+lMinY+lMaxZ])
{x+1,y+1}+((lXreal*lYreal*lZrM1)*lBuffIn^[lXo+1+lMaxY+lMinZ])
{x+1,z+1}+((lXreal*lYrM1*lZreal)*lBuffIn^[lXo+1+lMinY+lMaxZ])
{y+1,z+1}+((lXrM1*lYreal*lZreal)*lBuffIn^[lXo+lMaxY+lMaxZ])
{x+1,y+1,z+1}+((lXreal*lYreal*lZreal)*lBuffIn^[lXo+1+lMaxY+lMaxZ]) );
end; //values in range
end; //for x
end; //for y
end; //for z
ThreadDone;
exit;
end; //rendercutout
for lZ := l.ZDimStart to l.ZDimEnd do begin
lZx := lZ*lM.matrix[1,3];
lZy := lZ*lM.matrix[2,3];
lZz := lZ*lM.matrix[3,3];
lZxi := round(lZ*lM.matrix[1,3]* (1 shl kSh) );
lZyi := round(lZ*lM.matrix[2,3]* (1 shl kSh) );
lZzi := round(lZ*lM.matrix[3,3]* (1 shl kSh) );
if RenderForm.RenderRefreshTimer.enabled then exit;//abort
if Terminated then exit; //goto 345;//abort
if (lThread = 1) and ((lZ mod 10)=0) then
VisualProg(lZ);
for lY := l.YDimStart to l.YDimEnd do begin
lYx := lY * lM.matrix[1,2];
lYy := lY * lM.matrix[2,2];
lYz := lY * lM.matrix[3,2];
lOutPos := ((lZ+l.OutPivot-1)*l.OutSliceSz)+((lY+l.OutPivot-1)*l.Outdim);
lYxiZxi := round(lY * lM.matrix[1,2]* (1 shl kSh) )+lZxi;
lYyiZyi := round(lY * lM.matrix[2,2]* (1 shl kSh) )+lZyi;
lYziZzi := round(lY * lM.matrix[3,2]* (1 shl kSh) )+lZzi;
FindXBounds (lMaxX,lMinX,l.XDimIN,lYxiZxi,l.XPivotInU2,l.YDimIN,lYyiZyi,l.YPivotInU2,l.ZDimIN,lYziZzi,l.ZPivotInU2,l.OutDim,l.Xxra,l.Xyra,l.Xzra);
lMaxX := lMaxX - l.OutPivot -1 ;
lMinX := lMinX - l.OutPivot+1;
if lMaxX > lMinX then
for lX := lMinX to lMaxX do begin
lXreal := ( (lX*lM.matrix[1,1])+lYx+lZx)+l.XPivotIn;
lYreal := ((lX*lM.matrix[2,1])+lYy+lZy)+l.YPivotIn;
lZreal := ( (lX*lM.matrix[3,1])+lYz+lZz)+l.ZPivotIn;
lXo := trunc(lXreal);
lYo := trunc(lYreal);
lZo := trunc(lZreal);
if (lXo > 0) and (lXo < l.XDimIn)
and (lYo > 0) and (lYo < l.YDimIn) and
(lZo > 0) and (lZo < l.ZDimIn) then begin
lXreal := lXreal-lXo;
lYreal := lYreal-lYo;
lZreal := lZreal-lZo;
lXrM1 := 1-lXreal;
lYrM1 := 1-lYreal;
lZrM1 := 1-lZreal;
lMinY := ((lYo-1)*l.XdimIn);
lMinZ := ((lZo-1)*l.InSliceSz);
lMaxY := ((lYo)*l.XdimIn);
lMaxZ := ((lZo)*l.InSliceSz);
lBuffOut^[lX+l.OutPivot+lOutPos] :=
round (
{all min} ( (lXrM1*lYrM1*lZrM1)*lBuffIn^[lXo+lMinY+lMinZ])
{x+1}+((lXreal*lYrM1*lZrM1)*lBuffIn^[lXo+1+lMinY+lMinZ])
{y+1}+((lXrM1*lYreal*lZrM1)*lBuffIn^[lXo+lMaxY+lMinZ])
{z+1}+((lXrM1*lYrM1*lZreal)*lBuffIn^[lXo+lMinY+lMaxZ])
{x+1,y+1}+((lXreal*lYreal*lZrM1)*lBuffIn^[lXo+1+lMaxY+lMinZ])
{x+1,z+1}+((lXreal*lYrM1*lZreal)*lBuffIn^[lXo+1+lMinY+lMaxZ])
{y+1,z+1}+((lXrM1*lYreal*lZreal)*lBuffIn^[lXo+lMaxY+lMaxZ])
{x+1,y+1,z+1}+((lXreal*lYreal*lZreal)*lBuffIn^[lXo+1+lMaxY+lMaxZ]) );
end; //values in range
end; //for x
end; //for y
end; //for z
// if Terminated then Exit;
ThreadDone;
end; *)
initialization
InitializeCriticalSection(CritSect);
finalization
DeleteCriticalSection(CritSect);
end.