/*@
PetscDrawTensorContourPatch - PetscDraws a rectangular patch of a contour plot
for a two-dimensional array.
Not Collective
Input Parameters:
+ draw - the draw context
. m,n - the number of local mesh points in the x and y direction
. x,y - the locations of the local mesh points
. min,max - the minimum and maximum value in the entire contour
- v - the data
Options Database Keys:
. -draw_x_shared_colormap - Activates private colormap
Level: advanced
Note:
This is a lower level support routine, usually the user will call
PetscDrawTensorContour().
Concepts: contour plot
.seealso: PetscDrawTensorContour()
@*/
PetscErrorCode PetscDrawTensorContourPatch(PetscDraw draw,int m,int n,PetscReal *x,PetscReal *y,PetscReal min,PetscReal max,PetscReal *v)
{
PetscErrorCode ierr;
int c1,c2,c3,c4,i,j;
PetscReal x1,x2,x3,x4,y_1,y2,y3,y4;
PetscFunctionBegin;
PetscValidHeaderSpecific(draw,PETSC_DRAW_CLASSID,1);
/* PetscDraw the contour plot patch */
for (j=0; j<n-1; j++) {
for (i=0; i<m-1; i++) {
x1 = x[i];
y_1 = y[j];
c1 = PetscDrawRealToColor(v[i+j*m],min,max);
x2 = x[i+1];
y2 = y_1;
c2 = PetscDrawRealToColor(v[i+j*m+1],min,max);
x3 = x2;
y3 = y[j+1];
c3 = PetscDrawRealToColor(v[i+j*m+1+m],min,max);
x4 = x1;
y4 = y3;
c4 = PetscDrawRealToColor(v[i+j*m+m],min,max);
ierr = PetscDrawTriangle(draw,x1,y_1,x2,y2,x3,y3,c1,c2,c3);
CHKERRQ(ierr);
ierr = PetscDrawTriangle(draw,x1,y_1,x3,y3,x4,y4,c1,c3,c4);
CHKERRQ(ierr);
}
}
PetscFunctionReturn(0);
}
/*@
PetscDrawTensorContourPatch - PetscDraws a rectangular patch of a contour plot
for a two-dimensional array.
Not Collective
Input Parameters:
+ win - the window to draw in
. m,n - the number of local mesh points in the x and y direction
. x,y - the locations of the local mesh points
. max,min - the maximum and minimum value in the entire contour
- v - the data
Options Database Keys:
. -draw_x_shared_colormap - Activates private colormap
Level: advanced
Note:
This is a lower level support routine, usually the user will call
PetscDrawTensorContour().
Concepts: contour plot
.seealso: PetscDrawTensorContour()
@*/
PetscErrorCode PetscDrawTensorContourPatch(PetscDraw draw,int m,int n,PetscReal *x,PetscReal *y,PetscReal max,PetscReal min,PetscReal *v)
{
PetscErrorCode ierr;
int c1,c2,c3,c4,i,j;
PetscReal x1,x2,x3,x4,y_1,y2,y3,y4,scale;
PetscFunctionBegin;
scale = (245.0 - PETSC_DRAW_BASIC_COLORS)/(max - min);
/* PetscDraw the contour plot patch */
for (j=0; j<n-1; j++) {
for (i=0; i<m-1; i++) {
x1 = x[i]; y_1 = y[j]; c1 = (int)(PETSC_DRAW_BASIC_COLORS + scale*(v[i+j*m] - min));
x2 = x[i+1];y2 = y_1; c2 = (int)(PETSC_DRAW_BASIC_COLORS + scale*(v[i+j*m+1]-min));
x3 = x2; y3 = y[j+1];c3 = (int)(PETSC_DRAW_BASIC_COLORS + scale*(v[i+j*m+1+m]-min));
x4 = x1; y4 = y3; c4 = (int)(PETSC_DRAW_BASIC_COLORS + scale*(v[i+j*m+m]-min));
ierr = PetscDrawTriangle(draw,x1,y_1,x2,y2,x3,y3,c1,c2,c3);CHKERRQ(ierr);
ierr = PetscDrawTriangle(draw,x1,y_1,x3,y3,x4,y4,c1,c3,c4);CHKERRQ(ierr);
}
}
PetscFunctionReturn(0);
}
int main(int argc,char **argv)
{
PetscDraw draw;
PetscErrorCode ierr;
int i,j,w,h;
int k = PETSC_DRAW_BLACK;
int r = PETSC_DRAW_RED;
int g = PETSC_DRAW_GREEN;
int b = PETSC_DRAW_BLUE;
int y = PETSC_DRAW_YELLOW;
int c0 = PETSC_DRAW_BASIC_COLORS;
int c2 = 255;
int c1 = (c0+c2)/2;
ierr = PetscInitialize(&argc,&argv,NULL,help);CHKERRQ(ierr);
ierr = PetscDrawCreate(PETSC_COMM_WORLD,0,"Draw Example",PETSC_DECIDE,PETSC_DECIDE,101,101,&draw);CHKERRQ(ierr);
/*ierr = PetscDrawSetPause(draw,2.0);CHKERRQ(ierr);*/
ierr = PetscDrawSetFromOptions(draw);CHKERRQ(ierr);
ierr = PetscDrawCheckResizedWindow(draw);CHKERRQ(ierr);
ierr = PetscDrawGetWindowSize(draw,&w,&h);CHKERRQ(ierr);
ierr = PetscDrawSetCoordinates(draw,0,0,--w,--h);CHKERRQ(ierr);
ierr = PetscDrawClear(draw);CHKERRQ(ierr);
/* one-pixel lines in the window corners */
ierr = PetscDrawLine(draw,0,0,0,0,r);CHKERRQ(ierr);
ierr = PetscDrawLine(draw,w,0,w,0,r);CHKERRQ(ierr);
ierr = PetscDrawLine(draw,0,h,0,h,r);CHKERRQ(ierr);
ierr = PetscDrawLine(draw,w,h,w,h,r);CHKERRQ(ierr);
/* border lines with two pixels from borders */
ierr = PetscDrawLine(draw,0+2,0,w-2,0,k);CHKERRQ(ierr);
ierr = PetscDrawLine(draw,0+2,h,w-2,h,k);CHKERRQ(ierr);
ierr = PetscDrawLine(draw,0,0+2,0,h-2,k);CHKERRQ(ierr);
ierr = PetscDrawLine(draw,w,0+2,w,h-2,k);CHKERRQ(ierr);
/* oblique lines */
ierr = PetscDrawLine(draw,0+2,h/2,w-2,h-2,b);CHKERRQ(ierr);
ierr = PetscDrawLine(draw,0+1,h-1,w-1,0+1,b);CHKERRQ(ierr);
/* vertical up and down arrow, two pixels from borders */
ierr = PetscDrawArrow(draw,1*w/4,0+2,1*w/4,h-2,g);CHKERRQ(ierr);
ierr = PetscDrawArrow(draw,3*w/4,h-2,3*w/4,0+2,g);CHKERRQ(ierr);
/* horizontal right and left arrow, two pixels from borders */
ierr = PetscDrawArrow(draw,0+2,3*h/4,w-2,3*h/4,g);CHKERRQ(ierr);
ierr = PetscDrawArrow(draw,w-2,1*h/4,0+2,1*h/4,g);CHKERRQ(ierr);
/* flush, save, and pause */
ierr = PetscDrawFlush(draw);CHKERRQ(ierr);
ierr = PetscDrawSave(draw);CHKERRQ(ierr);
ierr = PetscDrawPause(draw);CHKERRQ(ierr);
ierr = PetscDrawCheckResizedWindow(draw);CHKERRQ(ierr);
ierr = PetscDrawGetWindowSize(draw,&w,&h);CHKERRQ(ierr);
ierr = PetscDrawSetCoordinates(draw,0,0,--w,--h);CHKERRQ(ierr);
ierr = PetscDrawClear(draw);CHKERRQ(ierr);
/* one-pixel rectangles in the window corners */
ierr = PetscDrawRectangle(draw,0,0,0,0,k,k,k,k);CHKERRQ(ierr);
ierr = PetscDrawRectangle(draw,w,0,w,0,k,k,k,k);CHKERRQ(ierr);
ierr = PetscDrawRectangle(draw,0,h,0,h,k,k,k,k);CHKERRQ(ierr);
ierr = PetscDrawRectangle(draw,w,h,w,h,k,k,k,k);CHKERRQ(ierr);
/* border rectangles with two pixels from borders */
ierr = PetscDrawRectangle(draw,0+2,0,w-2,0,k,k,k,k);CHKERRQ(ierr);
ierr = PetscDrawRectangle(draw,0+2,h,w-2,h,k,k,k,k);CHKERRQ(ierr);
ierr = PetscDrawRectangle(draw,0,0+2,0,h-2,k,k,k,k);CHKERRQ(ierr);
ierr = PetscDrawRectangle(draw,w,0+2,w,h-2,k,k,k,k);CHKERRQ(ierr);
/* more rectangles */
ierr = PetscDrawRectangle(draw,0+2,0+2,w/2-1,h/2-1,b,b,b,b);CHKERRQ(ierr);
ierr = PetscDrawRectangle(draw,0+2,h/2+1,w/2-1,h-2,r,r,r,r);CHKERRQ(ierr);
ierr = PetscDrawRectangle(draw,w/2+1,h/2+1,w-2,h-2,g,g,g,g);CHKERRQ(ierr);
ierr = PetscDrawRectangle(draw,w/2+1,0+2,w-2,h/2-1,y,y,y,y);CHKERRQ(ierr);
/* flush, save, and pause */
ierr = PetscDrawFlush(draw);CHKERRQ(ierr);
ierr = PetscDrawSave(draw);CHKERRQ(ierr);
ierr = PetscDrawPause(draw);CHKERRQ(ierr);
ierr = PetscDrawCheckResizedWindow(draw);CHKERRQ(ierr);
ierr = PetscDrawGetWindowSize(draw,&w,&h);CHKERRQ(ierr);
ierr = PetscDrawSetCoordinates(draw,0,0,--w,--h);CHKERRQ(ierr);
ierr = PetscDrawClear(draw);CHKERRQ(ierr);
/* interpolated triangles, one pixel from borders */
ierr = PetscDrawTriangle(draw,0+1,0+1,w-1,0+1,w-1,h-1,c0,c1,c2);CHKERRQ(ierr);
ierr = PetscDrawTriangle(draw,0+1,0+1,0+1,h-1,w-1,h-1,c0,c1,c2);CHKERRQ(ierr);
/* interpolated triangle, oblique, inside canvas */
ierr = PetscDrawTriangle(draw,w/4,h/4,w/2,3*h/4,3*w/4,h/2,c2,c1,c0);CHKERRQ(ierr);
/* flush, save, and pause */
ierr = PetscDrawFlush(draw);CHKERRQ(ierr);
ierr = PetscDrawSave(draw);CHKERRQ(ierr);
ierr = PetscDrawPause(draw);CHKERRQ(ierr);
ierr = PetscDrawCheckResizedWindow(draw);CHKERRQ(ierr);
ierr = PetscDrawGetWindowSize(draw,&w,&h);CHKERRQ(ierr);
ierr = PetscDrawSetCoordinates(draw,0,0,--w,--h);CHKERRQ(ierr);
ierr = PetscDrawClear(draw);CHKERRQ(ierr);
/* circles and ellipses */
ierr = PetscDrawEllipse(draw,w/2,h/2,w-1,h-1,r);CHKERRQ(ierr);
ierr = PetscDrawEllipse(draw,w,h/2,w/2,h,g);CHKERRQ(ierr);
ierr = PetscDrawEllipse(draw,0,0,w,h/2,b);CHKERRQ(ierr);
ierr = PetscDrawEllipse(draw,w/4,3*h/4,w/2,h/4,y);CHKERRQ(ierr);
ierr = PetscDrawCoordinateToPixel(draw,w/2,h/2,&i,&j);CHKERRQ(ierr);
ierr = PetscDrawPointPixel(draw,i,j,k);CHKERRQ(ierr);
/* flush, save, and pause */
ierr = PetscDrawFlush(draw);CHKERRQ(ierr);
ierr = PetscDrawSave(draw);CHKERRQ(ierr);
ierr = PetscDrawPause(draw);CHKERRQ(ierr);
ierr = PetscDrawDestroy(&draw);CHKERRQ(ierr);
ierr = PetscFinalize();
return 0;
}
void PETSC_STDCALL petscdrawtriangle_(PetscDraw draw,PetscReal *x1,PetscReal *y_1,PetscReal *x2,PetscReal *y2,PetscReal *x3,PetscReal *y3,
int *c1,int *c2,int *c3, int *__ierr ){
*__ierr = PetscDrawTriangle(
(PetscDraw)PetscToPointer((draw) ),*x1,*y_1,*x2,*y2,*x3,*y3,*c1,*c2,*c3);
}
