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templeos-info/public/Wb/Adam/Gr/GrPrimatives.HC

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2024-03-16 10:26:19 +00:00
#help_index "Graphics"
public Bool GrClamp(CDC *dc=gr.dc,I64 *left,I64 *top,I64 *right,I64 *bottom,
I64 width=0,I64 height=0)
{//Returns scrn, not window coordinates.
CTask *win_task;
*left=0;
*top=0;
*right=dc->width-1;
*bottom=dc->height-1;
if (dc->flags & DCF_SCRN_BITMAP) {
win_task=dc->win_task;
if (GR_WIDTH-1<*right)
*right=GR_WIDTH-1;
if (GR_HEIGHT-1<*bottom)
*bottom=GR_HEIGHT-1;
if (win_task->pix_left>*left)
*left=win_task->pix_left;
if (win_task->pix_top>*top)
*top=win_task->pix_top;
if (win_task->pix_right<*right)
*right=win_task->pix_right;
if (win_task->pix_bottom<*bottom)
*bottom=win_task->pix_bottom;
}
*left-=width;
*right+=width;
*top-=height;
*bottom+=height;
return *left<=*right && *top<=*bottom;
}
Bool DCClipLine(CDC *dc=gr.dc,I64 *x1,I64 *y1,I64 *x2,I64 *y2,
I64 width=0,I64 height=0)
{//Also converts window to scrn coordinates
I64 left,top,right,bottom;
CTask *win_task;
if (GrClamp(dc,&left,&top,&right,&bottom,width,height)) {
if (dc->flags & DCF_SCRN_BITMAP) {
win_task=dc->win_task;
*x1+=win_task->pix_left+win_task->scroll_x;
*y1+=win_task->pix_top+win_task->scroll_y;
*x2+=win_task->pix_left+win_task->scroll_x;
*y2+=win_task->pix_top+win_task->scroll_y;
}
return ClipLine(x1,y1,x2,y2,left,top,right,bottom);
} else
return FALSE;
}
public Bool GrPlot(CDC *dc=gr.dc,I64 x,I64 y)
{//2D. Clipping but No transformation or thick.
I32 *db=dc->depth_buf;
CTask *win_task;
CColorROPU32 old_color;
dc->depth_buf=NULL;
if (dc->brush) {
old_color=dc->color;
if (dc->color.c0.rop!=ROPB_COLLISION)
dc->color.c0.rop=ROPB_MONO;
GrBlot(dc,x,y,dc->brush);
dc->color=old_color;
} else if (dc->flags & DCF_SCRN_BITMAP) {
win_task=dc->win_task;
x+=win_task->pix_left+win_task->scroll_x;
y+=win_task->pix_top+win_task->scroll_y;
if (win_task->pix_left<=x<=win_task->pix_right &&
win_task->pix_top<=y<=win_task->pix_bottom &&
0<=x<dc->width && 0<=y<dc->height &&
(win_task->next_task==sys_winmgr_task ||
dc->flags&DCF_ON_TOP ||
!IsPixCovered0(win_task,x,y)))
GrPlot0(dc,x,y);
} else
if (0<=x<dc->width && 0<=y<dc->height)
GrPlot0(dc,x,y);
dc->depth_buf=db;
return TRUE;
}
Bool GrPlot1(CDC *dc=gr.dc,I64 x,I64 y)
{//Clipping but No transformation or thick, called with db_z set
CTask *win_task;
CColorROPU32 old_color;
if (dc->brush) {
old_color=dc->color;
if (dc->color.c0.rop!=ROPB_COLLISION)
dc->color.c0.rop=ROPB_MONO;
if (dc->depth_buf)
GrBlot3(dc,x,y,dc->db_z,dc->brush);
else
GrBlot(dc,x,y,dc->brush);
dc->color=old_color;
} else if (dc->flags & DCF_SCRN_BITMAP) {
win_task=dc->win_task;
x+=win_task->pix_left+win_task->scroll_x;
y+=win_task->pix_top+win_task->scroll_y;
if (win_task->pix_left<=x<=win_task->pix_right &&
win_task->pix_top <=y<=win_task->pix_bottom &&
0<=x<dc->width && 0<=y<dc->height &&
(win_task->next_task==sys_winmgr_task ||
dc->flags&DCF_ON_TOP ||
!IsPixCovered0(win_task,x,y)))
GrPlot0(dc,x,y);
} else
if (0<=x<dc->width && 0<=y<dc->height)
GrPlot0(dc,x,y);
return TRUE;
}
public I64 GrPeek(CDC *dc=gr.dc,I64 x,I64 y)
{//2D. Clipping but no transformation.
//Returns pix color or -1 if off-scrn or covered.
CTask *win_task;
if (dc->flags & DCF_SCRN_BITMAP) {
win_task=dc->win_task;
x+=win_task->pix_left+win_task->scroll_x;
y+=win_task->pix_top+win_task->scroll_y;
if (!(win_task->pix_left<=x<=win_task->pix_right) ||
!(win_task->pix_top <=y<=win_task->pix_bottom) ||
!(0<=x<dc->width) || !(0<=y<dc->height) ||
win_task->next_task!=sys_winmgr_task &&
!(dc->flags&DCF_ON_TOP) &&
IsPixCovered0(win_task,x,y))
return -1;
} else
if (!(0<=x<dc->width) || !(0<=y<dc->height))
return -1;
return GrPeek0(dc,x,y);
}
/*
This is an easier to understand
version of the nonrecursive routine below.
I64 GrFloodFillRay(CDC *dc,I64 x,I64 y,I64 z,I32 *db)
{
I64 res,j,x1,ray_len,ray_len2;
if (UnusedStk<0x80)
Panic("Stk Overflow",Fs);
res=ray_len=GrRayLen(dc,&x,y,z,db);
y--;
j=ray_len;
x1=x;
while (j>0) {
if (ray_len2=GrRayLenMinus(dc,x1,y))
res+=GrFloodFillRay(dc,x1,y,z,db);
j-=ray_len2+1;
x1-=ray_len2+1;
}
y+=2;
j=ray_len;
x1=x;
while (j>0) {
if (ray_len2=GrRayLenMinus(dc,x1,y))
res+=GrFloodFillRay(dc,x1,y,z,db);
j-=ray_len2+1;
x1-=ray_len2+1;
}
return res;
}
*/
class CFFRay
{
I64 state,x,y,j,x1,ray_len,ray_len2;
};
I64 GrFloodFillRay(CDC *dc,I64 x,I64 y,I64 z,I32 *db)
{//See the above commented-out routine for an easier to understand version.
//Returns cnt of pixs changed
I64 res=0;
//We don't dynamically calculate the size to avoid
//fragmentation of memory.
CFFRay *f_dc=MAlloc(sizeof(CFFRay)*0x80000),*f=f_dc;
f->x=x;
f->y=y;
f->state=0;
do {
switch [f->state] {
case 0:
f->state++;
res+=f->ray_len=GrRayLen(dc,&f->x,f->y,z,db);
f->y--;
f->j=f->ray_len;
f->x1=f->x;
break;
case 1:
if (f->j>0) {
f->state++;
if (f->ray_len2=GrRayLenMinus(dc,f->x1,f->y)) {
f[1].x=f->x1;
f[1].y=f->y;
f[1].state=0;
f++;
}
} else
f->state+=2;
break;
case 2:
f->state--;
f->j-=f->ray_len2+1;
f->x1-=f->ray_len2+1;
break;
case 3:
f->state++;
f->y+=2;
f->j=f->ray_len;
f->x1=f->x;
break;
case 4:
if (f->j>0) {
f->state++;
if (f->ray_len2=GrRayLenMinus(dc,f->x1,f->y)) {
f[1].x=f->x1;
f[1].y=f->y;
f[1].state=0;
f++;
}
} else
f->state+=2;
break;
case 5:
f->state--;
f->j-=f->ray_len2+1;
f->x1-=f->ray_len2+1;
break;
case 6:
f--;
break;
}
} while (f>=f_dc);
Free(f_dc);
return res;
}
public I64 GrFloodFill(CDC *dc=gr.dc,I64 x,I64 y,
Bool not_color=FALSE,I64 z=0,I32 *db=NULL)
{//2D. Ignore z and db.
//not_color=TRUE means fill up to everything which is not the current color.
//not_color=FALSE means fill all parts equ to the color under the point.
//Returns cnt of pixs changed
I64 res=0,j,old_flags=dc->flags;
CColorROPU32 old_color2=dc->color2;
CDC *old_brush;
if (dc->flags & DCF_DONT_DRAW) //TODO
return 0;
old_brush=dc->brush;
dc->brush=NULL;
if ((j=GrPeek(dc,x,y))>=0) {
if (not_color) {
dc->color2=dc->color.c0.color;
dc->flags|=DCF_FILL_NOT_COLOR;
} else {
dc->color2=j;
if (dc->color.c1.rop&ROPBF_DITHER) {
if (dc->color2.c0.color==dc->color.c0.color &&
dc->color.c0.color==dc->color.c1.color)
goto ff_done;
} else if (dc->color2.c0.color==dc->color.c0.color)
goto ff_done;
dc->flags&=~DCF_FILL_NOT_COLOR;
}
if (not_color && j!=dc->color2 ||
!not_color)
res=GrFloodFillRay(dc,x,y,z,db);
}
ff_done:
dc->brush=old_brush;
dc->flags=old_flags;
dc->color2=old_color2;
return res;
}
I64 GrFillSemiCircle(CDC *dc=gr.dc,I64 cx,I64 cy,I64 z=0,I64 diameter,I64 n)
{//2D. Clipping but not transformation.
I64 res=0,i,k,r=diameter>>1,rr;
if (diameter>=1)
switch (n) {
case 0:
if (diameter<GR_PEN_BRUSHES_NUM)
for (i=0;i<r;i++)
res+=GrHLine(dc,gr.circle_lo[diameter][i]+cx,
gr.circle_hi[diameter][i]+cx,cy+i-r,z,z);
else {
k=diameter+1;
rr=SqrI64((k+1)>>1);
for (i=0;i<r;i++)
res+=GrHLine(dc,-Sqrt(rr-SqrI64(r-i))+cx,
Sqrt(rr-SqrI64(r-i))+cx,cy+i-r,z,z);
}
break;
case 1:
if (diameter<GR_PEN_BRUSHES_NUM)
for (i=r+1;i<diameter;i++)
res+=GrHLine(dc,gr.circle_lo[diameter][i]+cx,
gr.circle_hi[diameter][i]+cx,cy+i-r,z,z);
else {
k=diameter+1;
rr=SqrI64((k+1)>>1);
for (i=r+1;i<k;i++)
res+=GrHLine(dc,-Sqrt(rr-SqrI64(i-r))+cx,
Sqrt(rr-SqrI64(i-r))+cx,cy+i-r,z,z);
}
break;
case 2:
if (diameter<GR_PEN_BRUSHES_NUM)
for (i=0;i<r;i++)
res+=GrVLine(dc,cx+i-r,gr.circle_lo[diameter][i]+cy,
gr.circle_hi[diameter][i]+cy,z,z);
else {
k=diameter+1;
rr=SqrI64((k+1)>>1);
for (i=0;i<r;i++)
res+=GrVLine(dc,cx+i-r,-Sqrt(rr-SqrI64(r-i))+cy,
Sqrt(rr-SqrI64(r-i))+cy,z,z);
}
break;
case 3:
if (diameter<GR_PEN_BRUSHES_NUM)
for (i=r+1;i<diameter;i++)
res+=GrVLine(dc,cx+i-r,gr.circle_lo[diameter][i]+cy,
gr.circle_hi[diameter][i]+cy,z,z);
else {
k=diameter+1;
rr=SqrI64((k+1)>>1);
for (i=r+1;i<k;i++)
res+=GrVLine(dc,cx+i-r,-Sqrt(rr-SqrI64(i-r))+cy,
Sqrt(rr-SqrI64(i-r))+cy,z,z);
}
break;
case 4:
if (diameter<GR_PEN_BRUSHES_NUM)
for (i=0;i<r;i++)
res+=GrHLine(dc,gr.circle_lo[diameter][i]+cx,
gr.circle_hi[diameter][i]+cx,cy+i-r,z,z);
else {
k=diameter+1;
rr=SqrI64((k+1)>>1);
for (i=0;i<r;i++)
res+=GrHLine(dc,-Sqrt(rr-SqrI64(r-i))+cx,
Sqrt(rr-SqrI64(r-i))+cx,cy+i-r,z,z);
}
break;
case 5:
if (diameter<GR_PEN_BRUSHES_NUM)
for (i=r+1;i<diameter;i++)
res+=GrHLine(dc,gr.circle_lo[diameter][i]+cx,
gr.circle_hi[diameter][i]+cx,cy+i-r,z,z);
else {
k=diameter+1;
rr=SqrI64((k+1)>>1);
for (i=r+1;i<k;i++)
res+=GrHLine(dc,-Sqrt(rr-SqrI64(i-r))+cx,
Sqrt(rr-SqrI64(i-r))+cx,cy+i-r,z,z);
}
break;
case 6:
if (diameter<GR_PEN_BRUSHES_NUM)
for (i=0;i<r;i++)
res+=GrVLine(dc,cx+i-r,gr.circle_lo[diameter][i]+cy,
gr.circle_hi[diameter][i]+cy,z,z);
else {
k=diameter+1;
rr=SqrI64((k+1)>>1);
for (i=0;i<r;i++)
res+=GrVLine(dc,cx+i-r,-Sqrt(rr-SqrI64(r-i))+cy,
Sqrt(rr-SqrI64(r-i))+cy,z,z);
}
break;
case 7:
if (diameter<GR_PEN_BRUSHES_NUM)
for (i=r+1;i<diameter;i++)
res+=GrVLine(dc,cx+i-r,gr.circle_lo[diameter][i]+cy,
gr.circle_hi[diameter][i]+cy,z,z);
else {
k=diameter+1;
rr=SqrI64((k+1)>>1);
for (i=r+1;i<k;i++)
res+=GrVLine(dc,cx+i-r,-Sqrt(rr-SqrI64(i-r))+cy,
Sqrt(rr-SqrI64(i-r))+cy,z,z);
}
break;
}
return res;
}
public I64 GrFillCircle(CDC *dc=gr.dc,I64 cx,I64 cy,I64 z=0,I64 diameter)
{//2D. Clipping but not transformation.
I64 res=0,i,k,r=diameter>>1,rr;
if (diameter>=1) {
if (diameter<GR_PEN_BRUSHES_NUM)
for (i=0;i<diameter;i++)
res+=GrHLine(dc,gr.circle_lo[diameter][i]+cx,
gr.circle_hi[diameter][i]+cx,cy+i-r,z,z);
else {
k=diameter+1;
rr=SqrI64((k+1)>>1);
for (i=0;i<=r;i++)
res+=GrHLine(dc,-Sqrt(rr-SqrI64(r-i))+cx,
Sqrt(rr-SqrI64(r-i))+cx,cy+i-r,z,z);
for (;i<k;i++)
res+=GrHLine(dc,-Sqrt(rr-SqrI64(i-r))+cx,
Sqrt(rr-SqrI64(i-r))+cx,cy+i-r,z,z);
}
}
return res;
}
public Bool GrPlot3B(CDC *dc=gr.dc,I64 x,I64 y,I64 z)
{//3D. Clipping and transformation but no thick.
I64 _x,_y,_z;
Bool was_transform=FALSE,was_symmetry=FALSE;
if (dc->flags & DCF_TRANSFORMATION) {
(*dc->transform)(dc,&x,&y,&z);
dc->flags&=~DCF_TRANSFORMATION;
was_transform=TRUE;
}
if (dc->flags & DCF_SYMMETRY) {
_x=x; _y=y; _z=z;
DCReflect(dc,&_x,&_y,&_z);
dc->flags&=~DCF_SYMMETRY;
dc->db_z=_z;
GrPlot1(dc,_x,_y);
was_symmetry=TRUE;
if (dc->flags&DCF_JUST_MIRROR)
goto gr_done;
}
dc->db_z=z;
GrPlot1(dc,x,y);
gr_done:
if (was_transform)
dc->flags|=DCF_TRANSFORMATION;
if (was_symmetry)
dc->flags|=DCF_SYMMETRY;
return TRUE;
}
public Bool GrPlot3(CDC *dc=gr.dc,I64 x,I64 y,I64 z)
{//3D. Clipping and transformation and thick.
I64 _x,_y,_z,w,dist;
CColorROPU32 old_color=dc->color;
Bool record,was_transform=FALSE,was_symmetry=FALSE;
CTask *win_task;
if (dc->flags & DCF_TRANSFORMATION) {
(*dc->transform)(dc,&x,&y,&z);
dc->flags&=~DCF_TRANSFORMATION;
was_transform=TRUE;
}
if (dc->flags & DCF_SYMMETRY) {
_x=x; _y=y; _z=z;
DCReflect(dc,&_x,&_y,&_z);
dc->flags&=~DCF_SYMMETRY;
GrPlot3(dc,_x,_y,_z);
was_symmetry=TRUE;
if (dc->flags&DCF_JUST_MIRROR)
goto gr_done;
}
w=dc->thick>>1;
dc->db_z=z;
if (dc->brush || w<=0)
GrPlot1(dc,x,y);
else if (dc->thick<GR_PEN_BRUSHES_NUM) {
if (dc->color.c0.rop!=ROPB_COLLISION)
dc->color.c0.rop=ROPB_MONO;
if (dc->depth_buf) {
if (dc->color.c1.rop&ROPBF_DITHER) {
dc->color.c1.rop=dc->color.c0.rop;
if (((x-w)^(y-w))&1) {
record=GrBlot3(dc,x-w,y-w,z,gr.odd_pen_brushes[dc->thick]);
dc->color.c0=dc->color.c1;
record=GrBlot3(dc,x-w,y-w,z,gr.even_pen_brushes[dc->thick]);
} else {
record=GrBlot3(dc,x-w,y-w,z,gr.even_pen_brushes[dc->thick]);
dc->color.c0=dc->color.c1;
record=GrBlot3(dc,x-w,y-w,z,gr.odd_pen_brushes[dc->thick]);
}
} else {
if (dc->color.c0.rop==ROPB_COLLISION) {
if (dc->color.c0.color!=dc->bkcolor.c0.color &&
dc->color.c0.color!=TRANSPARENT)
record=GrBlot3(dc,x-w,y-w,z,
gr.collision_pen_brushes[dc->thick]);
else
record=FALSE;
} else
record=GrBlot3(dc,x-w,y-w,z,gr.pen_brushes[dc->thick]);
}
} else {
if (dc->color.c1.rop&ROPBF_DITHER) {
dc->color.c1.rop=dc->color.c0.rop;
if (((x-w)^(y-w))&1) {
record=GrBlot(dc,x-w,y-w,gr.odd_pen_brushes[dc->thick]);
dc->color.c0=dc->color.c1;
record=GrBlot(dc,x-w,y-w,gr.even_pen_brushes[dc->thick]);
} else {
record=GrBlot(dc,x-w,y-w,gr.even_pen_brushes[dc->thick]);
dc->color.c0=dc->color.c1;
record=GrBlot(dc,x-w,y-w,gr.odd_pen_brushes[dc->thick]);
}
} else {
if (dc->color.c0.rop==ROPB_COLLISION) {
if (dc->color.c0.color!=dc->bkcolor.c0.color &&
dc->color.c0.color!=TRANSPARENT)
record=GrBlot(dc,x-w,y-w,gr.collision_pen_brushes[dc->thick]);
else
record=FALSE;
} else
record=GrBlot(dc,x-w,y-w,gr.pen_brushes[dc->thick]);
}
}
if (record) {
if (dc->flags & DCF_SCRN_BITMAP) {
win_task=dc->win_task;
x+=win_task->pix_left+win_task->scroll_x;
y+=win_task->pix_top+win_task->scroll_y;
}
if (dc->flags & DCF_LOCATE_NEAREST) {
dist=DistSqrI64(x,y,dc->cur_x,dc->cur_y);
if (dist<=dc->nearest_dist)
dc->nearest_dist=dist;
}
if (dc->flags & DCF_RECORD_EXTENTS) {
if (x-w<dc->min_x) dc->min_x=x-w;
if (y-w<dc->min_y) dc->min_y=y-w;
if (dc->thick & 1) {
if (x+w>dc->max_x) dc->max_x=x+w;
if (y+w>dc->max_y) dc->max_y=y+w;
} else {
if (x+w-1>dc->max_x) dc->max_x=x+w-1;
if (y+w-1>dc->max_y) dc->max_y=y+w-1;
}
}
}
} else
GrFillCircle(dc,x,y,dc->db_z,dc->thick);
gr_done:
dc->color=old_color;
if (was_transform)
dc->flags|=DCF_TRANSFORMATION;
if (was_symmetry)
dc->flags|=DCF_SYMMETRY;
return TRUE;
}
Bool GrLinePlot0(CDC *dc,I64 x,I64 y,I64 z)
{//This is a callback.
CTask *win_task=dc->win_task;
if (!(dc->flags & DCF_SCRN_BITMAP) ||
win_task->next_task==sys_winmgr_task ||
dc->flags&DCF_ON_TOP ||
!IsPixCovered0(win_task,x,y)) {
dc->db_z=z;
GrPlot0(dc,x,y);
}
return TRUE;
}
Bool GrLinePlot(CDC *dc,I64 x,I64 y,I64 z)
{//This is a callback.
dc->db_z=z;
GrPlot1(dc,x,y);
return TRUE;
}
public Bool GrLine(CDC *dc=gr.dc,I64 x1,I64 y1,I64 x2,I64 y2,
I64 step=1,I64 start=0)
{//2D. Clipping but not transformation.
Bool res=FALSE;
I32 *db=dc->depth_buf;
dc->depth_buf=NULL;
if (step==1 && !start && !dc->brush && !dc->depth_buf) {
if (DCClipLine(dc,&x1,&y1,&x2,&y2))
res=Line(dc,x1,y1,0,x2,y2,0,&GrLinePlot0,step,start);
} else
res=Line(dc,x1,y1,0,x2,y2,0,&GrLinePlot,step,start);
dc->depth_buf=db;
return res;
}
public Bool GrCircle(CDC *dc=gr.dc,I64 cx,I64 cy,I64 radius,
I64 step=1,F64 start_radians=0,F64 len_radians=2*<EFBFBD>)
{//2D. Clipping but not transformation.
Bool res;
I32 *db=dc->depth_buf;
dc->depth_buf=NULL;
res=Circle(dc,cx,cy,0,radius,&GrLinePlot,step,start_radians,len_radians);
dc->depth_buf=db;
return res;
}
public Bool GrEllipse(CDC *dc=gr.dc,
I64 cx,I64 cy,
I64 x_radius,I64 y_radius,
F64 rot_angle=0,
I64 step=1,
F64 start_radians=0,
F64 len_radians=2*<EFBFBD>)
{//2D. Clipping but not transformation.
Bool res;
I32 *db=dc->depth_buf;
dc->depth_buf=NULL;
res=Ellipse(dc,cx,cy,0,x_radius,y_radius,&GrLinePlot,
rot_angle,step,start_radians,len_radians);
dc->depth_buf=db;
return res;
}
public Bool GrRegPoly(CDC *dc=gr.dc,
I64 cx,I64 cy,
I64 x_radius,I64 y_radius,I64 sides,
F64 rot_angle=0,
I64 step=1,
F64 start_radians=0,
F64 len_radians=2*<EFBFBD>)
{//2D. Clipping but no transform or thick.
Bool res;
I32 *db=dc->depth_buf;
dc->depth_buf=NULL;
res=RegPoly(dc,cx,cy,0,x_radius,y_radius,sides,
&GrLinePlot,rot_angle,step,start_radians,len_radians);
dc->depth_buf=db;
return res;
}
public Bool Gr2Bezier(CDC *dc=gr.dc,CD3I32 *ctrl)
{//2nd order. Clipping but no transform or thick.
return Bezier2(dc,ctrl,&GrLinePlot);
}
public Bool Gr3Bezier(CDC *dc=gr.dc,CD3I32 *ctrl)
{//3rd order. Clipping but no transform or thick.
return Bezier3(dc,ctrl,&GrLinePlot);
}
public Bool Gr2BSpline(CDC *dc=gr.dc,CD3I32 *ctrl,I64 cnt,Bool closed=FALSE)
{//2nd order. Clipping but no transform or thick.
return BSpline2(dc,ctrl,cnt,&GrLinePlot,closed);
}
public Bool Gr3BSpline(CDC *dc=gr.dc,CD3I32 *ctrl,I64 cnt,Bool closed=FALSE)
{//3rd order. Clipping but no transform or thick.
return BSpline3(dc,ctrl,cnt,&GrLinePlot,closed);
}
I64 GrLineFat3(CDC *dc=gr.dc,I64 x1,I64 y1,I64 z1,I64 x2,I64 y2,I64 z2,
I64 width,I64 start=0)
{//Step through line segment calling callback.
//Uses $LK,"fixed-point",A="FI:::/Demo/Lectures/FixedPoint.HC"$.
I64 res=0,i,j,d,dx=x2-x1,dy=y2-y1,dz=z2-z1,_x,_y,_z,d_lo,d_hi,
adx=AbsI64(dx),ady=AbsI64(dy),adz=AbsI64(dz);
if (width>0) {
if (adx>=ady) {
if (adx>=adz) {
if (d=adx) {
if (dx>=0)
dx=0x100000000;
else
dx=-0x100000000;
dy=dy<<32/d;
dz=dz<<32/d;
}
} else {
if (d=adz) {
dx=dx<<32/d;
dy=dy<<32/d;
if (dz>=0)
dz=0x100000000;
else
dz=-0x100000000;
}
}
x1<<=32; y1<<=32; z1<<=32;
for (j=0;j<start;j++) {
x1+=dx; y1+=dy; z1+=dz;
}
if (start>=d)
res+=GrFillCircle(dc,x1.i32[1],y1.i32[1],z1.i32[1],width);
else {
if (width==1)
for (i=start;i<=d;i++) {
dc->db_z=z1.i32[1];
res+=GrPlot1(dc,x1.i32[1],y1.i32[1]);
_x=x1.i32[1]; _y=y1.i32[1]; _z=z1.i32[1];
x1+=dx; y1+=dy; z1+=dz;
}
else {
i=width*Sqrt(SqrI64(adx)+SqrI64(ady))/adx;
d_lo=i>>1; d_hi=(i-1)>>1;
if (dx>=0)
res+=GrFillSemiCircle(dc,x1.i32[1],y1.i32[1],z1.i32[1],width,2);
else
res+=GrFillSemiCircle(dc,x1.i32[1],y1.i32[1],z1.i32[1],width,7);
for (i=start;i<=d;i++) {
res+=GrVLine(dc,x1.i32[1],y1.i32[1]-d_lo,y1.i32[1]+d_hi,
z1.i32[1],z1.i32[1]);
_x=x1.i32[1]; _y=y1.i32[1]; _z=z1.i32[1];
x1+=dx; y1+=dy; z1+=dz;
}
x1-=dx; y1-=dy; z1-=dz;
if (dx>=0)
res+=GrFillSemiCircle(dc,x1.i32[1],y1.i32[1],z1.i32[1],width,3);
else
res+=GrFillSemiCircle(dc,x1.i32[1],y1.i32[1],z1.i32[1],width,6);
}
}
} else {
if (ady>=adz) {
if (d=ady) {
dx=dx<<32/d;
if (dy>=0)
dy=0x100000000;
else
dy=-0x100000000;
dz=dz<<32/d;
}
} else {
if (d=adz) {
dx=dx<<32/d;
dy=dy<<32/d;
if (dz>=0)
dz=0x100000000;
else
dz=-0x100000000;
}
}
x1<<=32; y1<<=32; z1<<=32;
for (j=0;j<start;j++) {
x1+=dx; y1+=dy; z1+=dz;
}
if (start>=d)
res+=GrFillCircle(dc,x1.i32[1],y1.i32[1],z1.i32[1],width);
else {
if (width==1)
for (i=start;i<=d;i++) {
dc->db_z=z1.i32[1];
res+=GrPlot1(dc,x1.i32[1],y1.i32[1]);
_x=x1.i32[1]; _y=y1.i32[1]; _z=z1.i32[1];
x1+=dx; y1+=dy; z1+=dz;
}
else {
i=width*Sqrt(SqrI64(ady)+SqrI64(adx))/ady;
d_lo=i>>1; d_hi=(i-1)>>1;
if (dy>=0)
res+=GrFillSemiCircle(dc,x1.i32[1],y1.i32[1],z1.i32[1],width,0);
else
res+=GrFillSemiCircle(dc,x1.i32[1],y1.i32[1],z1.i32[1],width,5);
for (i=start;i<=d;i++) {
res+=GrHLine(dc,x1.i32[1]-d_lo,x1.i32[1]+d_hi,y1.i32[1],
z1.i32[1],z1.i32[1]);
_x=x1.i32[1]; _y=y1.i32[1]; _z=z1.i32[1];
x1+=dx; y1+=dy; z1+=dz;
}
x1-=dx; y1-=dy; z1-=dz;
if (dy>=0)
res+=GrFillSemiCircle(dc,x1.i32[1],y1.i32[1],z1.i32[1],width,1);
else
res+=GrFillSemiCircle(dc,x1.i32[1],y1.i32[1],z1.i32[1],width,4);
}
}
}
}
return res;
}
public Bool GrLine3(CDC *dc=gr.dc,I64 x1,I64 y1,I64 z1,I64 x2,I64 y2,I64 z2,
I64 step=1,I64 start=0)
{//3D. Transformation with thick.
I64 _x1,_y1,_z1,_x2,_y2,_z2;
Bool res=FALSE,was_transform=FALSE,was_symmetry=FALSE;
if (dc->flags & DCF_TRANSFORMATION) {
(*dc->transform)(dc,&x1,&y1,&z1);
(*dc->transform)(dc,&x2,&y2,&z2);
dc->flags&=~DCF_TRANSFORMATION;
was_transform=TRUE;
}
if (dc->flags & DCF_SYMMETRY) {
_x1=x1; _y1=y1; _z1=z1;
DCReflect(dc,&_x1,&_y1,&_z1);
_x2=x2; _y2=y2; _z2=z2;
DCReflect(dc,&_x2,&_y2,&_z2);
dc->flags&=~DCF_SYMMETRY;
if (step==1 && !dc->brush) {
if (!start && dc->thick<2 && !dc->depth_buf) {//TODO: clip z depbuf
if (DCClipLine(dc,&_x1,&_y1,&_x2,&_y2))
res=Line(dc,_x1,_y1,0,_x2,_y2,0,&GrLinePlot0,step,start);
} else {
if (GrLineFat3(dc,_x1,_y1,_z1,_x2,_y2,_z2,dc->thick,start))
res=TRUE;
}
} else
res=Line(dc,_x1,_y1,_z1,_x2,_y2,_z2,&GrPlot3,step,start);
was_symmetry=TRUE;
if (dc->flags&DCF_JUST_MIRROR)
goto gr_done;
}
if (step==1 && !dc->brush) {
if (!start && dc->thick<2 && !dc->depth_buf) {//TODO: clip z depbuf
if (DCClipLine(dc,&x1,&y1,&x2,&y2))
res|=Line(dc,x1,y1,0,x2,y2,0,&GrLinePlot0,step,start);
} else {
if (GrLineFat3(dc,x1,y1,z1,x2,y2,z2,dc->thick,start))
res=TRUE;
}
} else
res|=Line(dc,x1,y1,z1,x2,y2,z2,&GrPlot3,step,start);
gr_done:
if (was_transform)
dc->flags|=DCF_TRANSFORMATION;
if (was_symmetry)
dc->flags|=DCF_SYMMETRY;
return res;
}
#help_index "Graphics/Char;Char/Graphics"
public Bool GrPutChar3(CDC *dc=gr.dc,I64 x,I64 y,I64 z,U8 ch)
{//3D. Transformation. DCF_SYMMETRY is silly.
if (dc->flags & DCF_TRANSFORMATION)
(*dc->transform)(dc,&x,&y,&z);
return GrPutChar(dc,x,y,ch);
}
public I64 GrPrint3(CDC *dc=gr.dc,I64 x,I64 y,I64 z,U8 *fmt,...)
{//3D. Transformation. DCF_SYMMETRY is silly.
U8 *buf=StrPrintJoin(NULL,fmt,argc,argv);
I64 res;
if (dc->flags & DCF_TRANSFORMATION)
(*dc->transform)(dc,&x,&y,&z);
res=GrPrint(dc,x,y,"%s",buf);
Free(buf);
return res;
}
public I64 GrVPrint3(CDC *dc=gr.dc,I64 x,I64 y,I64 z,U8 *fmt,...)
{//3D. Vertical text. Transformation. DCF_SYMMETRY is silly.
U8 *buf=StrPrintJoin(NULL,fmt,argc,argv);
I64 res;
if (dc->flags & DCF_TRANSFORMATION)
(*dc->transform)(dc,&x,&y,&z);
res=GrVPrint(dc,x,y,"%s",buf);
Free(buf);
return res;
}
#help_index "Graphics"
public Bool GrEllipse3(CDC *dc=gr.dc,
I64 cx,I64 cy,I64 cz,
I64 x_radius,I64 y_radius,
F64 rot_angle=0,
I64 step=1,
F64 start_radians=0,
F64 len_radians=2*<EFBFBD>)
{//3D. Transformation with thick.
Bool res;
I64 x,y,z,xx,yy,zz;
F64 m1,arg1,m2,arg2,s,c;
if (dc->flags & DCF_TRANSFORMATION) {
dc->flags&=~DCF_TRANSFORMATION;
(*dc->transform)(dc,&cx,&cy,&cz);
c=Cos(rot_angle);
s=Sin(rot_angle);
x_radius<<=16;
y_radius<<=16;
xx=0;
yy=0;
zz=0;
(*dc->transform)(dc,&xx,&yy,&zz);
x=x_radius*c;
y=x_radius*s;
z=0;
(*dc->transform)(dc,&x,&y,&z);
x-=xx;
y-=yy;
z-=zz;
R2P(&m1,&arg1,x,y);
x=-y_radius*s;
y=y_radius*c;
z=0;
(*dc->transform)(dc,&x,&y,&z);
x-=xx;
y-=yy;
z-=zz;
R2P(&m2,&arg2,x,y);
m2*=Abs(Sin(arg2-arg1));
res=Ellipse(dc,cx,cy,cz,
m1/0x10000,m2/0x10000,&GrPlot3,-arg1,step,start_radians,len_radians);
dc->flags|=DCF_TRANSFORMATION;
} else
res=Ellipse(dc,cx,cy,cz,x_radius,y_radius,&GrPlot3,
rot_angle,step,start_radians,len_radians);
return res;
}
public Bool GrCircle3(CDC *dc=gr.dc,I64 cx,I64 cy,I64 cz,I64 radius,
I64 step=1,F64 start_radians=0,F64 len_radians=2*<EFBFBD>)
{//3D. Transformation with thick.
if (dc->flags & DCF_TRANSFORMATION)
return GrEllipse3(dc,cx,cy,cz,radius,radius,0,step,
start_radians,len_radians);
else
return Circle(dc,cx,cy,cz,radius,&GrPlot3,step,
start_radians,len_radians);
}
public Bool GrRegPoly3(CDC *dc=gr.dc,
I64 cx,I64 cy,I64 cz,
I64 x_radius,I64 y_radius,I64 sides,
F64 rot_angle=0,
I64 step=1,
F64 start_radians=0,
F64 len_radians=2*<EFBFBD>)
{//3D. Clipping and transform and thick.
Bool res;
I64 x,y,z,xx,yy,zz;
F64 m1,arg1,m2,arg2,s,c;
if (dc->flags & DCF_TRANSFORMATION) {
dc->flags&=~DCF_TRANSFORMATION;
(*dc->transform)(dc,&cx,&cy,&cz);
c=Cos(rot_angle);
s=Sin(rot_angle);
x_radius<<=16;
y_radius<<=16;
xx=0;
yy=0;
zz=0;
(*dc->transform)(dc,&xx,&yy,&zz);
x=x_radius*c;
y=x_radius*s;
z=0;
(*dc->transform)(dc,&x,&y,&z);
x-=xx;
y-=yy;
z-=zz;
R2P(&m1,&arg1,x,y);
x=-y_radius*s;
y=y_radius*c;
z=0;
(*dc->transform)(dc,&x,&y,&z);
x-=xx;
y-=yy;
z-=zz;
R2P(&m2,&arg2,x,y);
m2*=Abs(Sin(arg2-arg1));
res=RegPoly(dc,cx,cy,cz,
m1/0x10000,m2/0x10000,sides,&GrPlot3,-arg1,
step,start_radians,len_radians);
dc->flags|=DCF_TRANSFORMATION;
} else
res=RegPoly(dc,cx,cy,cz,x_radius,y_radius,sides,&GrPlot3,
rot_angle,step,start_radians,len_radians);
return res;
}
public I64 GrFloodFill3(CDC *dc=gr.dc,I64 x1,I64 y1,I64 z1,Bool not_color=FALSE)
{//3D. Transformation.
//not_color=TRUE means fill up to everything which is not the current color.
//not_color=FALSE means fill all parts equ to the color under the point.
//Returns cnt of pixs changed
I64 res,old_flags=dc->flags,
_x,_y,_z;
if (dc->flags & DCF_TRANSFORMATION) {
(*dc->transform)(dc,&x1,&y1,&z1);
dc->flags&=~DCF_TRANSFORMATION;
}
if (dc->flags & DCF_SYMMETRY) {
_x=x1; _y=y1; _z=z1;
DCReflect(dc,&_x,&_y,&_z);
dc->flags&=~DCF_SYMMETRY;
res=GrFloodFill(dc,_x,_y,not_color,_z,dc->depth_buf);
if (dc->flags&DCF_JUST_MIRROR)
goto gr_done;
}
res=GrFloodFill(dc,x1,y1,not_color,z1,dc->depth_buf);
gr_done:
dc->flags=old_flags;
return res;
}
#help_index "Graphics;Graphics/Device Contexts"
Option(OPTf_WARN_HEADER_MISMATCH,OFF);
public I64 GrBlot3(CDC *dc=gr.dc,I64 x1,I64 y1,I64 z1,CDC *img)
{//3D. Clipping and transformation.
CColorROPU32 old_color=dc->color;
I64 color,reg i,j,w=img->width,h=img->height,
d1,dx1,dy1,dz1,
reg d2,dx2,dy2,dz2,
adx1,ady1,adz1,
adx2,ady2,adz2,
x2,y2,z2,x3,y3,z3,
dw,reg dh,x,y,_x1,_y1,_z1,_x2,_y2,_z2,_x3,_y3,_z3,
last_x,last_y,res=0;
Bool first;
CDC *old_brush=dc->brush;
if (dc->depth_buf || dc->flags & (DCF_TRANSFORMATION | DCF_SYMMETRY)) {
x2=x1+w; y2=y1; z2=z1;
x3=x1; y3=y1+h; z3=z1;
if (dc->flags & DCF_TRANSFORMATION) {
(*dc->transform)(dc,&x1,&y1,&z1);
(*dc->transform)(dc,&x2,&y2,&z2);
(*dc->transform)(dc,&x3,&y3,&z3);
}
if (dc->flags & DCF_SYMMETRY) {
_x1=x1; _y1=y1; _z1=z1;
DCReflect(dc,&_x1,&_y1,&_z1);
_x2=x2; _y2=y2; _z2=z2;
DCReflect(dc,&_x2,&_y2,&_z2);
_x3=x3; _y3=y3; _z3=z3;
DCReflect(dc,&_x3,&_y3,&_z3);
dx1=_x2-_x1; dy1=_y2-_y1; dz1=_z2-_z1;
dx2=_x3-_x1; dy2=_y3-_y1; dz2=_z3-_z1;
adx1=AbsI64(dx1); ady1=AbsI64(dy1); adz1=AbsI64(dz1);
adx2=AbsI64(dx2); ady2=AbsI64(dy2); adz2=AbsI64(dz2);
if (adx1>=ady1) {
if (adx1>=adz1)
d1=adx1;
else
d1=adz1;
} else {
if (ady1>=adz1)
d1=ady1;
else
d1=adz1;
}
if (adx2>=ady2) {
if (adx2>=adz2)
d2=adx2;
else
d2=adz2;
} else {
if (ady2>=adz2)
d2=ady2;
else
d2=adz2;
}
if (AbsI64(d1)!=w ||AbsI64(d2)!=h) {
d1<<=1;
d2<<=1;
}
if (d1) {
dx1=dx1<<32/d1;
dy1=dy1<<32/d1;
dz1=dz1<<32/d1;
} else
goto normal_image;
if (d2) {
dx2=dx2<<32/d2;
dy2=dy2<<32/d2;
dz2=dz2<<32/d2;
} else
goto normal_image;
dc->brush=NULL;
x=0;y=0;
dw=w<<32/d1;
dh=h<<32/d2;
first=TRUE;
_x1<<=32; _y1<<=32; _z1<<=32;
for (j=0;j<=d1;j++) {
_x2=_x1; _y2=_y1; _z2=_z1;
y=0;
for (i=0;i<=d2;i++) {
if (_x2.i32[1]!=last_x || _y2.i32[1]!=last_y ||first) {
if ((color=GrPeek(img,x.i32[1],y.i32[1]))>=0) {
if (dc->color.c0.rop==ROPB_MONO) {
if (color) {
dc->color=old_color&~ROPF_DITHER;
if (dc->depth_buf) {
dc->db_z=_z2.i32[1];
GrPlot1(dc,_x2.i32[1],_y2.i32[1]);
} else
GrPlot(dc,_x2.i32[1],_y2.i32[1]);
}
} else {
if (color!=TRANSPARENT) {
dc->color=old_color&~COLORROP_NO_ROP0_MASK|color;
if (dc->depth_buf) {
dc->db_z=_z2.i32[1];
GrPlot1(dc,_x2.i32[1],_y2.i32[1]);
} else
GrPlot(dc,_x2.i32[1],_y2.i32[1]);
}
}
}
}
first=FALSE;
last_x=_x2.i32[1]; last_y=_y2.i32[1];
_x2+=dx2; _y2+=dy2; _z2+=dz2;
y+=dh;
}
_x1+=dx1; _y1+=dy1; _z1+=dz1;
x+=dw;
}
res=1;
normal_image:
if (dc->flags&DCF_JUST_MIRROR)
goto gr_done;
}
dx1=x2-x1; dy1=y2-y1; dz1=z2-z1;
dx2=x3-x1; dy2=y3-y1; dz2=z3-z1;
adx1=AbsI64(dx1); ady1=AbsI64(dy1); adz1=AbsI64(dz1);
adx2=AbsI64(dx2); ady2=AbsI64(dy2); adz2=AbsI64(dz2);
if (adx1>=ady1) {
if (adx1>=adz1)
d1=adx1;
else
d1=adz1;
} else {
if (ady1>=adz1)
d1=ady1;
else
d1=adz1;
}
if (adx2>=ady2) {
if (adx2>=adz2)
d2=adx2;
else
d2=adz2;
} else {
if (ady2>=adz2)
d2=ady2;
else
d2=adz2;
}
if (AbsI64(d1)!=w ||AbsI64(d2)!=h) {
d1<<=1;
d2<<=1;
}
if (d1) {
dx1=dx1<<32/d1;
dy1=dy1<<32/d1;
dz1=dz1<<32/d1;
} else
goto gr_done;
if (d2) {
dx2=dx2<<32/d2;
dy2=dy2<<32/d2;
dz2=dz2<<32/d2;
} else
goto gr_done;
dc->brush=NULL;
x=0;y=0;
dw=w<<32/d1;
dh=h<<32/d2;
first=TRUE;
x1<<=32; y1<<=32; z1<<=32;
for (j=0;j<=d1;j++) {
x2=x1; y2=y1; z2=z1;
y=0;
for (i=0;i<=d2;i++) {
if (x2.i32[1]!=last_x || y2.i32[1]!=last_y || first) {
if ((color=GrPeek(img,x.i32[1],y.i32[1]))>=0) {
if (dc->color.c0.rop==ROPB_MONO) {
if (color) {
dc->color=old_color&~ROPF_DITHER;
if (dc->depth_buf) {
dc->db_z=z2.i32[1];
GrPlot1(dc,x2.i32[1],y2.i32[1]);
} else
GrPlot(dc,x2.i32[1],y2.i32[1]);
}
} else {
if (color!=TRANSPARENT) {
dc->color=old_color&~COLORROP_NO_ROP0_MASK|color;//COLOR
if (dc->depth_buf) {
dc->db_z=z2.i32[1];
GrPlot1(dc,x2.i32[1],y2.i32[1]);
} else
GrPlot(dc,x2.i32[1],y2.i32[1]);
}
}
}
}
first=FALSE;
last_x=x2.i32[1]; last_y=y2.i32[1];
x2+=dx2; y2+=dy2; z2+=dz2;
y+=dh;
}
x1+=dx1; y1+=dy1; z1+=dz1;
x+=dw;
}
res=1; //TODO: check off scrn
} else
res=GrBlot(dc,x1,y1,img);
gr_done:
dc->color=old_color;
dc->brush=old_brush;
return res;
}
Option(OPTf_WARN_HEADER_MISMATCH,ON);
#help_index "Graphics"
public Bool Gr2Bezier3(CDC *dc=gr.dc,CD3I32 *ctrl)
{//2nd order. Clipping and transform and thick.
Bool res=FALSE;
I64 i,x,y,z,
old_flags=dc->flags;
CD3I32 *ctrl2=NULL,*ctrl3=NULL;
if (dc->flags & DCF_TRANSFORMATION) {
ctrl2=MAlloc(sizeof(CD3I32)*3);
for (i=0;i<3;i++) {
x=ctrl[i].x;
y=ctrl[i].y;
z=ctrl[i].z;
(*dc->transform)(dc,&x,&y,&z);
ctrl2[i].x=x;
ctrl2[i].y=y;
ctrl2[i].z=z;
}
dc->flags&=~DCF_TRANSFORMATION;
ctrl=ctrl2;
}
if (dc->flags & DCF_SYMMETRY) {
ctrl3=MAlloc(sizeof(CD3I32)*3);
for (i=0;i<3;i++) {
x=ctrl[i].x;
y=ctrl[i].y;
z=ctrl[i].z;
DCReflect(dc,&x,&y,&z);
ctrl3[i].x=x;
ctrl3[i].y=y;
ctrl3[i].z=z;
}
dc->flags&=~DCF_SYMMETRY;
res=Bezier2(dc,ctrl3,&GrPlot3);
if (dc->flags & DCF_JUST_MIRROR)
goto gr_done;
}
res|=Bezier2(dc,ctrl,&GrPlot3);
gr_done:
Free(ctrl2);
Free(ctrl3);
dc->flags=old_flags;
return res;
}
public Bool Gr3Bezier3(CDC *dc=gr.dc,CD3I32 *ctrl)
{//3rd order. Clipping and transform and thick.
Bool res=FALSE;
I64 i,x,y,z,
old_flags=dc->flags;
CD3I32 *ctrl2=NULL,*ctrl3=NULL;
if (dc->flags & DCF_TRANSFORMATION) {
ctrl2=MAlloc(sizeof(CD3I32)*4);
for (i=0;i<4;i++) {
x=ctrl[i].x;
y=ctrl[i].y;
z=ctrl[i].z;
(*dc->transform)(dc,&x,&y,&z);
ctrl2[i].x=x;
ctrl2[i].y=y;
ctrl2[i].z=z;
}
dc->flags&=~DCF_TRANSFORMATION;
ctrl=ctrl2;
}
if (dc->flags & DCF_SYMMETRY) {
ctrl3=MAlloc(sizeof(CD3I32)*4);
for (i=0;i<4;i++) {
x=ctrl[i].x;
y=ctrl[i].y;
z=ctrl[i].z;
DCReflect(dc,&x,&y,&z);
ctrl3[i].x=x;
ctrl3[i].y=y;
ctrl3[i].z=z;
}
dc->flags&=~DCF_SYMMETRY;
res=Bezier3(dc,ctrl3,&GrPlot3);
if (dc->flags & DCF_JUST_MIRROR)
goto gr_done;
}
res|=Bezier3(dc,ctrl,&GrPlot3);
gr_done:
Free(ctrl2);
Free(ctrl3);
dc->flags=old_flags;
return res;
}
public I64 Gr2BSpline3(CDC *dc=gr.dc,CD3I32 *ctrl,I64 cnt,Bool closed=FALSE)
{//2nd order. Clipping and transform and thick.
Bool res=FALSE;
I64 i,x,y,z,
old_flags=dc->flags;
CD3I32 *ctrl2=NULL,*ctrl3=NULL;
if (dc->flags & DCF_TRANSFORMATION) {
ctrl2=MAlloc(sizeof(CD3I32)*cnt);
for (i=0;i<cnt;i++) {
x=ctrl[i].x;
y=ctrl[i].y;
z=ctrl[i].z;
(*dc->transform)(dc,&x,&y,&z);
ctrl2[i].x=x;
ctrl2[i].y=y;
ctrl2[i].z=z;
}
dc->flags&=~DCF_TRANSFORMATION;
ctrl=ctrl2;
}
if (dc->flags & DCF_SYMMETRY) {
ctrl3=MAlloc(sizeof(CD3I32)*cnt);
for (i=0;i<cnt;i++) {
x=ctrl[i].x;
y=ctrl[i].y;
z=ctrl[i].z;
DCReflect(dc,&x,&y,&z);
ctrl3[i].x=x;
ctrl3[i].y=y;
ctrl3[i].z=z;
}
dc->flags&=~DCF_SYMMETRY;
res=BSpline2(dc,ctrl3,cnt,&GrPlot3,closed);
if (dc->flags & DCF_JUST_MIRROR)
goto gr_done;
}
res|=BSpline2(dc,ctrl,cnt,&GrPlot3,closed);
gr_done:
Free(ctrl2);
Free(ctrl3);
dc->flags=old_flags;
return res;
}
public Bool Gr3BSpline3(CDC *dc=gr.dc,CD3I32 *ctrl,I64 cnt,Bool closed=FALSE)
{//3rd order. Clipping and transform and thick.
Bool res=FALSE;
I64 i,x,y,z,
old_flags=dc->flags;
CD3I32 *ctrl2=NULL,*ctrl3=NULL;
if (dc->flags & DCF_TRANSFORMATION) {
ctrl2=MAlloc(sizeof(CD3I32)*cnt);
for (i=0;i<cnt;i++) {
x=ctrl[i].x;
y=ctrl[i].y;
z=ctrl[i].z;
(*dc->transform)(dc,&x,&y,&z);
ctrl2[i].x=x;
ctrl2[i].y=y;
ctrl2[i].z=z;
}
dc->flags&=~DCF_TRANSFORMATION;
ctrl=ctrl2;
}
if (dc->flags & DCF_SYMMETRY) {
ctrl3=MAlloc(sizeof(CD3I32)*cnt);
for (i=0;i<cnt;i++) {
x=ctrl[i].x;
y=ctrl[i].y;
z=ctrl[i].z;
DCReflect(dc,&x,&y,&z);
ctrl3[i].x=x;
ctrl3[i].y=y;
ctrl3[i].z=z;
}
dc->flags&=~DCF_SYMMETRY;
res=BSpline3(dc,ctrl3,cnt,&GrPlot3,closed);
if (dc->flags & DCF_JUST_MIRROR)
goto gr_done;
}
res|=BSpline3(dc,ctrl,cnt,&GrPlot3,closed);
gr_done:
Free(ctrl2);
Free(ctrl3);
dc->flags=old_flags;
return res;
}
public I64 GrFillTri0(CDC *dc=gr.dc,CD3I32 *p1,CD3I32 *p2,CD3I32 *p4)
{//3D. Returns cnt of pixs changed
I64 x1,x2,y1,y2,z1,z2,dx1,dy1,dz1,dx2,dy2,dz2,res=0,i,min,max;
CTask *win_task;
if (AbsI64(p1->y-p2->y)+AbsI64(p1->y-p4->y)<=
AbsI64(p1->x-p2->x)+AbsI64(p1->x-p4->x)) {
//p1 is min x
if (p4->x<p2->x)
SwapI64(&p4,&p2);
if (p2->x<p1->x)
SwapI64(&p2,&p1);
//p2y<=p4y
if (p4->y<p2->y)
SwapI64(&p4,&p2);
min=0;
max=dc->height;
if (dc->flags & DCF_SCRN_BITMAP) {
win_task=dc->win_task;
min-=win_task->scroll_y+win_task->pix_top;
max-=win_task->scroll_y+win_task->pix_top;
if (max>win_task->pix_bottom-(win_task->scroll_y+win_task->pix_top))
max=win_task->pix_bottom-(win_task->scroll_y+win_task->pix_top);
}
if ((dy2=p4->y-p1->y)<0) {
dy1=p2->y-p1->y;
dx1=(p1->x-p2->x)<<32/dy1;
dz1=(p1->z-p2->z)<<32/dy1;
dx2=(p1->x-p4->x)<<32/dy2;
dz2=(p1->z-p4->z)<<32/dy2;
x1=x2=p1->x<<32; y1=p1->y; z1=z2=p1->z<<32;
if (y1+dy2<min) {
i=min-(y1+dy2);
if (i>-dy2) goto ft_done;
dy2+=i;
}
if (y1>=max) {
i=y1-max+1;
if (i>-dy2)
i=-dy2;
dy2+=i;
y1-=i;
x1+=dx1*i;
x2+=dx2*i;
z1+=dz1*i;
z2+=dz2*i;
}
while (dy2++) {
res+=GrHLine(dc,x1.i32[1],x2.i32[1],y1,z1.i32[1],z2.i32[1]);
y1--;
x1+=dx1;
x2+=dx2;
z1+=dz1;
z2+=dz2;
}
if (dy2=p2->y-p4->y) {
dx2=(p4->x-p2->x)<<32/dy2;
dz2=(p4->z-p2->z)<<32/dy2;
if (y1+dy2<min) {
i=min-(y1+dy2);
if (i>-dy2) goto ft_done;
dy2+=i;
}
if (y1>=max) {
i=y1-max+1;
if (i>-dy2) goto ft_done;
dy2+=i;
y1-=i;
x1+=dx1*i;
x2+=dx2*i;
z1+=dz1*i;
z2+=dz2*i;
}
}
while (dy2++<=0) {
res+=GrHLine(dc,x1.i32[1],x2.i32[1],y1,z1.i32[1],z2.i32[1]);
y1--;
x1+=dx1;
x2+=dx2;
z1+=dz1;
z2+=dz2;
}
} else if ((dy2=p2->y-p1->y)>0) {
dy1=p4->y-p1->y;
dx1=(p4->x-p1->x)<<32/dy1;
dz1=(p4->z-p1->z)<<32/dy1;
dx2=(p2->x-p1->x)<<32/dy2;
dz2=(p2->z-p1->z)<<32/dy2;
x1=x2=p1->x<<32; y1=p1->y; z1=z2=p1->z<<32;
if (y1+dy2>=max) {
i=y1+dy2-max+1;
if (i>dy2) goto ft_done;
dy2-=i;
}
if (y1<min) {
i=min-y1;
if (i>dy2)
i=dy2;
dy2-=i;
y1+=i;
x1+=dx1*i;
x2+=dx2*i;
z1+=dz1*i;
z2+=dz2*i;
}
while (dy2--) {
res+=GrHLine(dc,x1.i32[1],x2.i32[1],y1,z1.i32[1],z2.i32[1]);
y1++;
x1+=dx1;
x2+=dx2;
z1+=dz1;
z2+=dz2;
}
if (dy2=p4->y-p2->y) {
dx2=(p4->x-p2->x)<<32/dy2;
dz2=(p4->z-p2->z)<<32/dy2;
if (y1+dy2>=max) {
i=y1+dy2-max+1;
if (i>dy2) goto ft_done;
dy2-=i;
}
if (y1<min) {
i=min-y1;
if (i>dy2) goto ft_done;
dy2-=i;
y1+=i;
x1+=dx1*i;
x2+=dx2*i;
z1+=dz1*i;
z2+=dz2*i;
}
}
while (dy2-->=0) {
res+=GrHLine(dc,x1.i32[1],x2.i32[1],y1,z1.i32[1],z2.i32[1]);
y1++;
x1+=dx1;
x2+=dx2;
z1+=dz1;
z2+=dz2;
}
} else {
if (dy1=p2->y-p1->y) {
dx1=(p2->x-p1->x)<<32/dy1;
dz1=(p2->z-p1->z)<<32/dy1;
if (dy2=p2->y-p4->y) {
dx2=(p2->x-p4->x)<<32/dy2;
dz2=(p2->z-p4->z)<<32/dy2;
} else {
dx2=0;
dz2=0;
}
x1=x2=p2->x<<32; y1=p2->y; z1=z2=p2->z<<32;
if (y1<min) {
i=min-y1;
if (i>-dy1)
i=-dy1;
dy1+=i;
y1+=i;
x1+=dx1*i;
x2+=dx2*i;
z1+=dz1*i;
z2+=dz2*i;
}
while (dy1++<=0) {
if (y1<max)
res+=GrHLine(dc,x1.i32[1],x2.i32[1],y1,z1.i32[1],z2.i32[1]);
y1++;
x1+=dx1;
x2+=dx2;
z1+=dz1;
z2+=dz2;
}
}
if (dy1=p4->y-p1->y) {
dx1=(p1->x-p4->x)<<32/dy1;
dz1=(p1->z-p4->z)<<32/dy1;
if (dy2=p4->y-p2->y) {
dx2=(p2->x-p4->x)<<32/dy2;
dz2=(p2->z-p4->z)<<32/dy2;
} else {
dx2=0;
dz2=0;
}
x1=x2=p4->x<<32; y1=p4->y; z1=z2=p4->z<<32;
if (y1-dy1<min) {
i=min-(y1-dy1);
if (i>dy1) goto ft_done;
dy1-=i;
}
if (y1>=max) {
i=y1-max+1;
if (i>dy1) goto ft_done;
dy1-=i;
y1-=i;
x1+=dx1*i;
x2+=dx2*i;
z1+=dz1*i;
z2+=dz2*i;
}
while (dy1-->=0) {
res+=GrHLine(dc,x1.i32[1],x2.i32[1],y1,z1.i32[1],z2.i32[1]);
y1--;
x1+=dx1;
x2+=dx2;
z1+=dz1;
z2+=dz2;
}
}
}
} else {
//p1 is min y
if (p4->y<p2->y)
SwapI64(&p4,&p2);
if (p2->y<p1->y)
SwapI64(&p2,&p1);
//p2x<=p4x
if (p4->x<p2->x)
SwapI64(&p4,&p2);
min=0;
max=dc->width;
if (dc->flags & DCF_SCRN_BITMAP) {
win_task=dc->win_task;
min-=win_task->scroll_x+win_task->pix_left;
max-=win_task->scroll_x+win_task->pix_left;
if (max>win_task->pix_right-(win_task->scroll_x+win_task->pix_left))
max=win_task->pix_right-(win_task->scroll_x+win_task->pix_left);
}
if ((dx2=p4->x-p1->x)<0) {
dx1=p2->x-p1->x;
dy1=(p1->y-p2->y)<<32/dx1;
dz1=(p1->z-p2->z)<<32/dx1;
dy2=(p1->y-p4->y)<<32/dx2;
dz2=(p1->z-p4->z)<<32/dx2;
y1=y2=p1->y<<32; x1=p1->x; z1=z2=p1->z<<32;
if (x1+dx2<min) {
i=min-(x1+dx2);
if (i>-dx2) goto ft_done;
dx2+=i;
}
if (x1>=max) {
i=x1-max+1;
if (i>-dx2)
i=-dx2;
dx2+=i;
x1-=i;
y1+=dy1*i;
y2+=dy2*i;
z1+=dz1*i;
z2+=dz2*i;
}
while (dx2++) {
res+=GrVLine(dc,x1,y1.i32[1],y2.i32[1],z1.i32[1],z2.i32[1]);
x1--;
y1+=dy1;
y2+=dy2;
z1+=dz1;
z2+=dz2;
}
if (dx2=p2->x-p4->x) {
dy2=(p4->y-p2->y)<<32/dx2;
dz2=(p4->z-p2->z)<<32/dx2;
if (x1+dx2<min) {
i=min-(x1+dx2);
if (i>-dx2) goto ft_done;
dx2+=i;
}
if (x1>=max) {
i=x1-max+1;
if (i>-dx2) goto ft_done;
dx2+=i;
x1-=i;
y1+=dy1*i;
y2+=dy2*i;
z1+=dz1*i;
z2+=dz2*i;
}
}
while (dx2++<=0) {
res+=GrVLine(dc,x1,y1.i32[1],y2.i32[1],z1.i32[1],z2.i32[1]);
x1--;
y1+=dy1;
y2+=dy2;
z1+=dz1;
z2+=dz2;
}
} else if ((dx2=p2->x-p1->x)>0) {
dx1=p4->x-p1->x;
dy1=(p4->y-p1->y)<<32/dx1;
dz1=(p4->z-p1->z)<<32/dx1;
dy2=(p2->y-p1->y)<<32/dx2;
dz2=(p2->z-p1->z)<<32/dx2;
y1=y2=p1->y<<32; x1=p1->x; z1=z2=p1->z<<32;
if (x1+dx2>=max) {
i=x1+dx2-max+1;
if (i>dx2) goto ft_done;
dx2-=i;
}
if (x1<min) {
i=min-x1;
if (i>dx2)
i=dx2;
dx2-=i;
x1+=i;
y1+=dy1*i;
y2+=dy2*i;
z1+=dz1*i;
z2+=dz2*i;
}
while (dx2--) {
res+=GrVLine(dc,x1,y1.i32[1],y2.i32[1],z1.i32[1],z2.i32[1]);
x1++;
y1+=dy1;
y2+=dy2;
z1+=dz1;
z2+=dz2;
}
if (dx2=p4->x-p2->x) {
dy2=(p4->y-p2->y)<<32/dx2;
dz2=(p4->z-p2->z)<<32/dx2;
if (x1+dx2>=max) {
i=x1+dx2-max+1;
if (i>dx2) goto ft_done;
dx2-=i;
}
if (x1<min) {
i=min-x1;
if (i>dx2) goto ft_done;
dx2-=i;
x1+=i;
y1+=dy1*i;
y2+=dy2*i;
z1+=dz1*i;
z2+=dz2*i;
}
}
while (dx2-->=0) {
res+=GrVLine(dc,x1,y1.i32[1],y2.i32[1],z1.i32[1],z2.i32[1]);
x1++;
y1+=dy1;
y2+=dy2;
z1+=dz1;
z2+=dz2;
}
} else {
if (dx1=p2->x-p1->x) {
dy1=(p2->y-p1->y)<<32/dx1;
dz1=(p2->z-p1->z)<<32/dx1;
if (dx2=p2->x-p4->x) {
dy2=(p2->y-p4->y)<<32/dx2;
dz2=(p2->z-p4->z)<<32/dx2;
} else {
dy2=0;
dz2=0;
}
y1=y2=p2->y<<32; x1=p2->x; z1=z2=p2->z<<32;
if (x1<min) {
i=min-x1;
if (i>-dx1)
i=-dx1;
dx1+=i;
x1+=i;
y1+=dy1*i;
y2+=dy2*i;
z1+=dz1*i;
z2+=dz2*i;
}
while (dx1++<=0) {
if (x1<max)
res+=GrVLine(dc,x1,y1.i32[1],y2.i32[1],z1.i32[1],z2.i32[1]);
x1++;
y1+=dy1;
y2+=dy2;
z1+=dz1;
z2+=dz2;
}
}
if (dx1=p4->x-p1->x) {
dy1=(p1->y-p4->y)<<32/dx1;
dz1=(p1->z-p4->z)<<32/dx1;
if (dx2=p4->x-p2->x) {
dy2=(p2->y-p4->y)<<32/dx2;
dz2=(p2->z-p4->z)<<32/dx2;
} else {
dy2=0;
dz2=0;
}
y1=y2=p4->y<<32; x1=p4->x; z1=z2=p4->z<<32;
if (x1-dx1<min) {
i=min-(x1-dx1);
if (i>dx1) goto ft_done;
dx1-=i;
}
if (x1>=max) {
i=x1-max+1;
if (i>dx1) goto ft_done;
dx1-=i;
x1-=i;
y1+=dy1*i;
y2+=dy2*i;
z1+=dz1*i;
z2+=dz2*i;
}
while (dx1-->=0) {
res+=GrVLine(dc,x1,y1.i32[1],y2.i32[1],z1.i32[1],z2.i32[1]);
x1--;
y1+=dy1;
y2+=dy2;
z1+=dz1;
z2+=dz2;
}
}
}
}
ft_done:
return res;
}
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