/*@
PetscDrawScalePopup - PetscDraws a contour scale window.
Collective on PetscDraw
Input Parameters:
+ popup - the window (often a window obtained via PetscDrawGetPopup()
. min - minimum value being plotted
- max - maximum value being plotted
Level: intermediate
Notes:
All processors that share the draw MUST call this routine
@*/
PetscErrorCode PetscDrawScalePopup(PetscDraw popup,PetscReal min,PetscReal max)
{
PetscReal xl = 0.0,yl = 0.0,xr = 2.0,yr = 1.0,value;
PetscErrorCode ierr;
int i,c = PETSC_DRAW_BASIC_COLORS,rank;
char string[32];
MPI_Comm comm;
PetscFunctionBegin;
ierr = PetscDrawCheckResizedWindow(popup);CHKERRQ(ierr);
ierr = PetscObjectGetComm((PetscObject)popup,&comm);CHKERRQ(ierr);
ierr = MPI_Comm_rank(comm,&rank);CHKERRQ(ierr);
if (rank) PetscFunctionReturn(0);
for (i=0; i<10; i++) {
ierr = PetscDrawRectangle(popup,xl,yl,xr,yr,c,c,c,c);CHKERRQ(ierr);
yl += .1; yr += .1; c = (int)((double)c + (245. - PETSC_DRAW_BASIC_COLORS)/9.);
}
for (i=0; i<10; i++) {
value = min + i*(max-min)/9.0;
/* look for a value that should be zero, but is not due to round-off */
if (PetscAbsReal(value) < 1.e-10 && max-min > 1.e-6) value = 0.0;
sprintf(string,"%18.16e",(double)value);
ierr = PetscDrawString(popup,.2,.02 + i/10.0,PETSC_DRAW_BLACK,string);CHKERRQ(ierr);
}
ierr = PetscDrawSetTitle(popup,"Contour Scale");CHKERRQ(ierr);
ierr = PetscDrawFlush(popup);CHKERRQ(ierr);
PetscFunctionReturn(0);
}
/*@
PetscDrawScalePopup - draws a contour scale window.
Collective on PetscDraw
Input Parameters:
+ popup - the window (often a window obtained via PetscDrawGetPopup()
. min - minimum value being plotted
- max - maximum value being plotted
Level: intermediate
Notes: All processors that share the draw MUST call this routine
.seealso: PetscDrawGetPopup(), PetscDrawTensorContour()
@*/
PetscErrorCode PetscDrawScalePopup(PetscDraw popup,PetscReal min,PetscReal max)
{
PetscBool isnull;
PetscReal xl = 0.0,yl = 0.0,xr = 1.0,yr = 1.0;
PetscMPIInt rank;
PetscErrorCode ierr;
int i;
char string[32];
PetscFunctionBegin;
if (!popup) PetscFunctionReturn(0);
PetscValidHeaderSpecific(popup,PETSC_DRAW_CLASSID,1);
ierr = PetscDrawIsNull(popup,&isnull);
CHKERRQ(ierr);
if (isnull) PetscFunctionReturn(0);
ierr = MPI_Comm_rank(PetscObjectComm((PetscObject)popup),&rank);
CHKERRQ(ierr);
ierr = PetscDrawCheckResizedWindow(popup);
CHKERRQ(ierr);
ierr = PetscDrawClear(popup);
CHKERRQ(ierr);
ierr = PetscDrawSetTitle(popup,"Contour Scale");
CHKERRQ(ierr);
ierr = PetscDrawSetCoordinates(popup,xl,yl,xr,yr);
CHKERRQ(ierr);
ierr = PetscDrawCollectiveBegin(popup);
CHKERRQ(ierr);
if (!rank) {
for (i=0; i<10; i++) {
int c = PetscDrawRealToColor((PetscReal)i/9,0,1);
ierr = PetscDrawRectangle(popup,xl,yl,xr,yr,c,c,c,c);
CHKERRQ(ierr);
yl += 0.1;
}
for (i=0; i<10; i++) {
PetscReal value = min + i*(max-min)/9;
/* look for a value that should be zero, but is not due to round-off */
if (PetscAbsReal(value) < 1.e-10 && max-min > 1.e-6) value = 0.0;
ierr = PetscSNPrintf(string,sizeof(string),"%18.16e",(double)value);
CHKERRQ(ierr);
ierr = PetscDrawString(popup,0.2,0.02+i/10.0,PETSC_DRAW_BLACK,string);
CHKERRQ(ierr);
}
}
ierr = PetscDrawCollectiveEnd(popup);
CHKERRQ(ierr);
ierr = PetscDrawFlush(popup);
CHKERRQ(ierr);
ierr = PetscDrawSave(popup);
CHKERRQ(ierr);
PetscFunctionReturn(0);
}
static PetscErrorCode MatFDColoringView_Draw_Zoom(PetscDraw draw,void *Aa)
{
MatFDColoring fd = (MatFDColoring)Aa;
PetscErrorCode ierr;
PetscInt i,j;
PetscReal x,y;
PetscFunctionBegin;
/* loop over colors */
for (i=0; i<fd->ncolors; i++) {
for (j=0; j<fd->nrows[i]; j++) {
y = fd->M - fd->rows[i][j] - fd->rstart;
x = fd->columnsforrow[i][j];
ierr = PetscDrawRectangle(draw,x,y,x+1,y+1,i+1,i+1,i+1,i+1);CHKERRQ(ierr);
}
}
PetscFunctionReturn(0);
}
static PetscErrorCode MatFDColoringView_Draw_Zoom(PetscDraw draw,void *Aa)
{
MatFDColoring fd = (MatFDColoring)Aa;
PetscErrorCode ierr;
PetscInt i,j,nz,row;
PetscReal x,y;
MatEntry *Jentry=fd->matentry;
PetscFunctionBegin;
/* loop over colors */
nz = 0;
for (i=0; i<fd->ncolors; i++) {
for (j=0; j<fd->nrows[i]; j++) {
row = Jentry[nz].row;
y = fd->M - row - fd->rstart;
x = (PetscReal)Jentry[nz++].col;
ierr = PetscDrawRectangle(draw,x,y,x+1,y+1,i+1,i+1,i+1,i+1);CHKERRQ(ierr);
}
}
PetscFunctionReturn(0);
}
void PETSC_STDCALL petscdrawrectangle_(PetscDraw draw,PetscReal *xl,PetscReal *yl,PetscReal *xr,PetscReal *yr,int *c1,int *c2,int *c3,int *c4, int *__ierr ){
*__ierr = PetscDrawRectangle(
(PetscDraw)PetscToPointer((draw) ),*xl,*yl,*xr,*yr,*c1,*c2,*c3,*c4);
}
/*@
PetscDrawBarDraw - Redraws a bar graph.
Collective on PetscDrawBar
Input Parameter:
. bar - The bar graph context
Level: intermediate
.seealso: PetscDrawBar, PetscDrawBarCreate(), PetscDrawBarSetData()
@*/
PetscErrorCode PetscDrawBarDraw(PetscDrawBar bar)
{
PetscDraw draw;
PetscBool isnull;
PetscReal xmin,xmax,ymin,ymax,*values,binLeft,binRight;
PetscInt numValues,i,bcolor,color,idx,*perm,nplot;
PetscMPIInt rank;
PetscErrorCode ierr;
char **labels;
PetscFunctionBegin;
PetscValidHeaderSpecific(bar,PETSC_DRAWBAR_CLASSID,1);
ierr = PetscDrawIsNull(bar->win,&isnull);CHKERRQ(ierr);
if (isnull) PetscFunctionReturn(0);
ierr = MPI_Comm_rank(PetscObjectComm((PetscObject)bar),&rank);CHKERRQ(ierr);
if (bar->numBins < 1) PetscFunctionReturn(0);
color = bar->color;
if (color == PETSC_DRAW_ROTATE) bcolor = PETSC_DRAW_BLACK+1;
else bcolor = color;
numValues = bar->numBins;
values = bar->values;
if (bar->ymin == bar->ymax) {
/* user has not set bounds on bars so set them based on the data */
ymin = PETSC_MAX_REAL;
ymax = PETSC_MIN_REAL;
for (i=0; i<numValues; i++) {
ymin = PetscMin(ymin,values[i]);
ymax = PetscMax(ymax,values[i]);
}
} else {
ymin = bar->ymin;
ymax = bar->ymax;
}
nplot = numValues; /* number of points to actually plot; if some are lower than requested tolerance */
xmin = 0.0;
xmax = nplot;
labels = bar->labels;
if (bar->sort) {
ierr = PetscMalloc1(numValues,&perm);CHKERRQ(ierr);
for (i=0; i<numValues;i++) perm[i] = i;
ierr = PetscSortRealWithPermutation(numValues,values,perm);CHKERRQ(ierr);
if (bar->sorttolerance) {
for (i=0; i<numValues;i++) {
if (values[perm[numValues - i - 1]] < bar->sorttolerance) {
nplot = i;
break;
}
}
}
}
draw = bar->win;
ierr = PetscDrawCheckResizedWindow(draw);CHKERRQ(ierr);
ierr = PetscDrawClear(draw);CHKERRQ(ierr);
ierr = PetscDrawAxisSetLimits(bar->axis,xmin,xmax,ymin,ymax);CHKERRQ(ierr);
ierr = PetscDrawAxisDraw(bar->axis);CHKERRQ(ierr);
ierr = PetscDrawCollectiveBegin(draw);CHKERRQ(ierr);
if (!rank) { /* Draw bins */
for (i=0; i<nplot; i++) {
idx = (bar->sort ? perm[numValues - i - 1] : i);
binLeft = xmin + i;
binRight = xmin + i + 1;
ierr = PetscDrawRectangle(draw,binLeft,ymin,binRight,values[idx],bcolor,bcolor,bcolor,bcolor);CHKERRQ(ierr);
ierr = PetscDrawLine(draw,binLeft,ymin,binLeft,values[idx],PETSC_DRAW_BLACK);CHKERRQ(ierr);
ierr = PetscDrawLine(draw,binRight,ymin,binRight,values[idx],PETSC_DRAW_BLACK);CHKERRQ(ierr);
ierr = PetscDrawLine(draw,binLeft,values[idx],binRight,values[idx],PETSC_DRAW_BLACK);CHKERRQ(ierr);
if (labels) {
PetscReal h;
ierr = PetscDrawStringGetSize(draw,NULL,&h);CHKERRQ(ierr);
ierr = PetscDrawStringCentered(draw,.5*(binLeft+binRight),ymin - 1.5*h,bcolor,labels[idx]);CHKERRQ(ierr);
}
if (color == PETSC_DRAW_ROTATE) bcolor++;
if (bcolor > PETSC_DRAW_BASIC_COLORS-1) bcolor = PETSC_DRAW_BLACK+1;
}
}
ierr = PetscDrawCollectiveEnd(draw);CHKERRQ(ierr);
if (bar->sort) {ierr = PetscFree(perm);CHKERRQ(ierr);}
ierr = PetscDrawFlush(draw);CHKERRQ(ierr);
ierr = PetscDrawPause(draw);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;
}