- for(i=0;i<im->gdes_c;i++){
- switch(im->gdes[i].gf){
- case GF_CDEF:
- case GF_VDEF:
- case GF_DEF:
- case GF_PRINT:
- case GF_GPRINT:
- case GF_COMMENT:
- case GF_HRULE:
- case GF_VRULE:
- case GF_XPORT:
- case GF_SHIFT:
- break;
- case GF_TICK:
- for (ii = 0; ii < im->xsize; ii++)
- {
- if (!isnan(im->gdes[i].p_data[ii]) &&
- im->gdes[i].p_data[ii] != 0.0)
- {
- if (im -> gdes[i].yrule > 0 ) {
- gfx_new_line(im->canvas,
- im -> xorigin + ii, im->yorigin,
- im -> xorigin + ii, im->yorigin - im -> gdes[i].yrule * im -> ysize,
- 1.0,
- im -> gdes[i].col );
- } else if ( im -> gdes[i].yrule < 0 ) {
- gfx_new_line(im->canvas,
- im -> xorigin + ii, im->yorigin - im -> ysize,
- im -> xorigin + ii, im->yorigin - ( 1 - im -> gdes[i].yrule ) * im -> ysize,
- 1.0,
- im -> gdes[i].col );
-
- }
- }
- }
- break;
- case GF_LINE:
- case GF_AREA:
- /* fix data points at oo and -oo */
- for(ii=0;ii<im->xsize;ii++){
- if (isinf(im->gdes[i].p_data[ii])){
- if (im->gdes[i].p_data[ii] > 0) {
- im->gdes[i].p_data[ii] = im->maxval ;
- } else {
- im->gdes[i].p_data[ii] = im->minval ;
- }
-
- }
- } /* for */
-
- /* *******************************************************
- a ___. (a,t)
- | | ___
- ____| | | |
- | |___|
- -------|--t-1--t--------------------------------
-
- if we know the value at time t was a then
- we draw a square from t-1 to t with the value a.
-
- ********************************************************* */
- if (im->gdes[i].col != 0x0){
- /* GF_LINE and friend */
- if(im->gdes[i].gf == GF_LINE ){
- double last_y=0.0;
- node = NULL;
- for(ii=1;ii<im->xsize;ii++){
- if (isnan(im->gdes[i].p_data[ii]) || (im->slopemode==1 && isnan(im->gdes[i].p_data[ii-1]))){
- node = NULL;
- continue;
- }
- if ( node == NULL ) {
- last_y = ytr(im,im->gdes[i].p_data[ii]);
- if ( im->slopemode == 0 ){
- node = gfx_new_line(im->canvas,
- ii-1+im->xorigin,last_y,
- ii+im->xorigin,last_y,
- im->gdes[i].linewidth,
- im->gdes[i].col);
- } else {
- node = gfx_new_line(im->canvas,
- ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii-1]),
- ii+im->xorigin,last_y,
- im->gdes[i].linewidth,
- im->gdes[i].col);
- }
- } else {
- double new_y = ytr(im,im->gdes[i].p_data[ii]);
- if ( im->slopemode==0 && ! AlmostEqual2sComplement(new_y,last_y,4)){
- gfx_add_point(node,ii-1+im->xorigin,new_y);
- };
- last_y = new_y;
- gfx_add_point(node,ii+im->xorigin,new_y);
- };
-
- }
- } else {
- int idxI=-1;
- double *foreY=malloc(sizeof(double)*im->xsize*2);
- double *foreX=malloc(sizeof(double)*im->xsize*2);
- double *backY=malloc(sizeof(double)*im->xsize*2);
- double *backX=malloc(sizeof(double)*im->xsize*2);
- int drawem = 0;
- for(ii=0;ii<=im->xsize;ii++){
- double ybase,ytop;
- if ( idxI > 0 && ( drawem != 0 || ii==im->xsize)){
- int cntI=1;
- int lastI=0;
- while (cntI < idxI && AlmostEqual2sComplement(foreY[lastI],foreY[cntI],4) && AlmostEqual2sComplement(foreY[lastI],foreY[cntI+1],4)){cntI++;}
- node = gfx_new_area(im->canvas,
- backX[0],backY[0],
- foreX[0],foreY[0],
- foreX[cntI],foreY[cntI], im->gdes[i].col);
- while (cntI < idxI) {
- lastI = cntI;
- cntI++;
- while ( cntI < idxI && AlmostEqual2sComplement(foreY[lastI],foreY[cntI],4) && AlmostEqual2sComplement(foreY[lastI],foreY[cntI+1],4)){cntI++;}
- gfx_add_point(node,foreX[cntI],foreY[cntI]);
- }
- gfx_add_point(node,backX[idxI],backY[idxI]);
- while (idxI > 1){
- lastI = idxI;
- idxI--;
- while ( idxI > 1 && AlmostEqual2sComplement(backY[lastI], backY[idxI],4) && AlmostEqual2sComplement(backY[lastI],backY[idxI-1],4)){idxI--;}
- gfx_add_point(node,backX[idxI],backY[idxI]);
- }
- idxI=-1;
- drawem = 0;
- }
- if (drawem != 0){
- drawem = 0;
- idxI=-1;
- }
- if (ii == im->xsize) break;
-
- /* keep things simple for now, just draw these bars
- do not try to build a big and complex area */
-
-
- if ( im->slopemode == 0 && ii==0){
- continue;
- }
- if ( isnan(im->gdes[i].p_data[ii]) ) {
- drawem = 1;
- continue;
- }
- ytop = ytr(im,im->gdes[i].p_data[ii]);
- if ( lastgdes && im->gdes[i].stack ) {
- ybase = ytr(im,lastgdes->p_data[ii]);
- } else {
- ybase = ytr(im,areazero);
- }
- if ( ybase == ytop ){
- drawem = 1;
- continue;
- }
- /* every area has to be wound clock-wise,
- so we have to make sur base remains base */
- if (ybase > ytop){
- double extra = ytop;
- ytop = ybase;
- ybase = extra;
- }
- if ( im->slopemode == 0 ){
- backY[++idxI] = ybase-0.2;
- backX[idxI] = ii+im->xorigin-1;
- foreY[idxI] = ytop+0.2;
- foreX[idxI] = ii+im->xorigin-1;
- }
- backY[++idxI] = ybase-0.2;
- backX[idxI] = ii+im->xorigin;
- foreY[idxI] = ytop+0.2;
- foreX[idxI] = ii+im->xorigin;
- }
- /* close up any remaining area */
- free(foreY);
- free(foreX);
- free(backY);
- free(backX);
- } /* else GF_LINE */
- } /* if color != 0x0 */
- /* make sure we do not run into trouble when stacking on NaN */
- for(ii=0;ii<im->xsize;ii++){
- if (isnan(im->gdes[i].p_data[ii])) {
- if (lastgdes && (im->gdes[i].stack)) {
- im->gdes[i].p_data[ii] = lastgdes->p_data[ii];
- } else {
- im->gdes[i].p_data[ii] = areazero;
- }
- }
- }
- lastgdes = &(im->gdes[i]);
- break;
-#ifdef WITH_PIECHART
- case GF_PART:
- if(isnan(im->gdes[i].yrule)) /* fetch variable */
- im->gdes[i].yrule = im->gdes[im->gdes[i].vidx].vf.val;
-
- if (finite(im->gdes[i].yrule)) { /* even the fetched var can be NaN */
- pie_part(im,im->gdes[i].col,
- im->pie_x,im->pie_y,im->piesize*0.4,
- M_PI*2.0*PieStart/100.0,
- M_PI*2.0*(PieStart+im->gdes[i].yrule)/100.0);
- PieStart += im->gdes[i].yrule;
- }
- break;
-#endif
- case GF_STACK:
- rrd_set_error("STACK should already be turned into LINE or AREA here");
- return -1;
- break;
-
- } /* switch */
- }
-#ifdef WITH_PIECHART
- if (piechart==2) {
- im->draw_x_grid=0;
- im->draw_y_grid=0;
- }
-#endif
+ for (ii = 1; ii < im->xsize; ii++) {
+ if (isnan(im->gdes[i].p_data[ii])
+ || (im->slopemode == 1
+ && isnan(im->gdes[i].p_data[ii - 1]))) {
+ draw_on = 0;
+ continue;
+ }
+ if (draw_on == 0) {
+ last_y = ytr(im, im->gdes[i].p_data[ii]);
+ if (im->slopemode == 0) {
+ double x = ii - 1 + im->xorigin;
+ double y = last_y;
+
+ gfx_line_fit(im, &x, &y);
+ cairo_move_to(im->cr, x, y);
+ x = ii + im->xorigin;
+ y = last_y;
+ gfx_line_fit(im, &x, &y);
+ cairo_line_to(im->cr, x, y);
+ } else {
+ double x = ii - 1 + im->xorigin;
+ double y =
+ ytr(im, im->gdes[i].p_data[ii - 1]);
+ gfx_line_fit(im, &x, &y);
+ cairo_move_to(im->cr, x, y);
+ x = ii + im->xorigin;
+ y = last_y;
+ gfx_line_fit(im, &x, &y);
+ cairo_line_to(im->cr, x, y);
+ }
+ draw_on = 1;
+ } else {
+ double x1 = ii + im->xorigin;
+ double y1 = ytr(im, im->gdes[i].p_data[ii]);
+
+ if (im->slopemode == 0
+ && !AlmostEqual2sComplement(y1, last_y, 4)) {
+ double x = ii - 1 + im->xorigin;
+ double y = y1;
+
+ gfx_line_fit(im, &x, &y);
+ cairo_line_to(im->cr, x, y);
+ };
+ last_y = y1;
+ gfx_line_fit(im, &x1, &y1);
+ cairo_line_to(im->cr, x1, y1);
+ };
+ }
+ cairo_set_source_rgba(im->cr,
+ im->gdes[i].
+ col.red,
+ im->gdes[i].
+ col.green,
+ im->gdes[i].
+ col.blue, im->gdes[i].col.alpha);
+ cairo_set_line_cap(im->cr, CAIRO_LINE_CAP_ROUND);
+ cairo_set_line_join(im->cr, CAIRO_LINE_JOIN_ROUND);
+ cairo_stroke(im->cr);
+ cairo_restore(im->cr);
+ } else {
+ int idxI = -1;
+ double *foreY =
+ (double *) malloc(sizeof(double) * im->xsize * 2);
+ double *foreX =
+ (double *) malloc(sizeof(double) * im->xsize * 2);
+ double *backY =
+ (double *) malloc(sizeof(double) * im->xsize * 2);
+ double *backX =
+ (double *) malloc(sizeof(double) * im->xsize * 2);
+ int drawem = 0;
+
+ for (ii = 0; ii <= im->xsize; ii++) {
+ double ybase, ytop;
+
+ if (idxI > 0 && (drawem != 0 || ii == im->xsize)) {
+ int cntI = 1;
+ int lastI = 0;
+
+ while (cntI < idxI
+ &&
+ AlmostEqual2sComplement(foreY
+ [lastI],
+ foreY[cntI], 4)
+ &&
+ AlmostEqual2sComplement(foreY
+ [lastI],
+ foreY
+ [cntI + 1], 4)) {
+ cntI++;
+ }
+ gfx_new_area(im,
+ backX[0], backY[0],
+ foreX[0], foreY[0],
+ foreX[cntI],
+ foreY[cntI], im->gdes[i].col);
+ while (cntI < idxI) {
+ lastI = cntI;
+ cntI++;
+ while (cntI < idxI
+ &&
+ AlmostEqual2sComplement(foreY
+ [lastI],
+ foreY[cntI], 4)
+ &&
+ AlmostEqual2sComplement(foreY
+ [lastI],
+ foreY
+ [cntI
+ + 1], 4)) {
+ cntI++;
+ }
+ gfx_add_point(im, foreX[cntI], foreY[cntI]);
+ }
+ gfx_add_point(im, backX[idxI], backY[idxI]);
+ while (idxI > 1) {
+ lastI = idxI;
+ idxI--;
+ while (idxI > 1
+ &&
+ AlmostEqual2sComplement(backY
+ [lastI],
+ backY[idxI], 4)
+ &&
+ AlmostEqual2sComplement(backY
+ [lastI],
+ backY
+ [idxI
+ - 1], 4)) {
+ idxI--;
+ }
+ gfx_add_point(im, backX[idxI], backY[idxI]);
+ }
+ idxI = -1;
+ drawem = 0;
+ gfx_close_path(im);
+ }
+ if (drawem != 0) {
+ drawem = 0;
+ idxI = -1;
+ }
+ if (ii == im->xsize)
+ break;
+ if (im->slopemode == 0 && ii == 0) {
+ continue;
+ }
+ if (isnan(im->gdes[i].p_data[ii])) {
+ drawem = 1;
+ continue;
+ }
+ ytop = ytr(im, im->gdes[i].p_data[ii]);
+ if (lastgdes && im->gdes[i].stack) {
+ ybase = ytr(im, lastgdes->p_data[ii]);
+ } else {
+ ybase = ytr(im, areazero);
+ }
+ if (ybase == ytop) {
+ drawem = 1;
+ continue;
+ }
+
+ if (ybase > ytop) {
+ double extra = ytop;
+
+ ytop = ybase;
+ ybase = extra;
+ }
+ if (im->slopemode == 0) {
+ backY[++idxI] = ybase - 0.2;
+ backX[idxI] = ii + im->xorigin - 1;
+ foreY[idxI] = ytop + 0.2;
+ foreX[idxI] = ii + im->xorigin - 1;
+ }
+ backY[++idxI] = ybase - 0.2;
+ backX[idxI] = ii + im->xorigin;
+ foreY[idxI] = ytop + 0.2;
+ foreX[idxI] = ii + im->xorigin;
+ }
+ /* close up any remaining area */
+ free(foreY);
+ free(foreX);
+ free(backY);
+ free(backX);
+ } /* else GF_LINE */
+ }
+ /* if color != 0x0 */
+ /* make sure we do not run into trouble when stacking on NaN */
+ for (ii = 0; ii < im->xsize; ii++) {
+ if (isnan(im->gdes[i].p_data[ii])) {
+ if (lastgdes && (im->gdes[i].stack)) {
+ im->gdes[i].p_data[ii] = lastgdes->p_data[ii];
+ } else {
+ im->gdes[i].p_data[ii] = areazero;
+ }
+ }
+ }
+ lastgdes = &(im->gdes[i]);
+ break;
+ case GF_STACK:
+ rrd_set_error
+ ("STACK should already be turned into LINE or AREA here");
+ return -1;
+ break;
+ } /* switch */
+ }
+ cairo_reset_clip(im->cr);
+
+ /* grid_paint also does the text */
+ if (!(im->extra_flags & ONLY_GRAPH))
+ grid_paint(im);
+ if (!(im->extra_flags & ONLY_GRAPH))
+ axis_paint(im);
+ /* the RULES are the last thing to paint ... */
+ for (i = 0; i < im->gdes_c; i++) {
+
+ switch (im->gdes[i].gf) {
+ case GF_HRULE:
+ if (im->gdes[i].yrule >= im->minval
+ && im->gdes[i].yrule <= im->maxval) {
+ cairo_save(im->cr);
+ if (im->gdes[i].dash) {
+ cairo_set_dash(im->cr,
+ im->gdes[i].p_dashes,
+ im->gdes[i].ndash, im->gdes[i].offset);
+ }
+ gfx_line(im, im->xorigin,
+ ytr(im, im->gdes[i].yrule),
+ im->xorigin + im->xsize,
+ ytr(im, im->gdes[i].yrule), 1.0, im->gdes[i].col);
+ cairo_stroke(im->cr);
+ cairo_restore(im->cr);
+ }
+ break;
+ case GF_VRULE:
+ if (im->gdes[i].xrule >= im->start
+ && im->gdes[i].xrule <= im->end) {
+ cairo_save(im->cr);
+ if (im->gdes[i].dash) {
+ cairo_set_dash(im->cr,
+ im->gdes[i].p_dashes,
+ im->gdes[i].ndash, im->gdes[i].offset);
+ }
+ gfx_line(im,
+ xtr(im, im->gdes[i].xrule),
+ im->yorigin, xtr(im,
+ im->
+ gdes[i].
+ xrule),
+ im->yorigin - im->ysize, 1.0, im->gdes[i].col);
+ cairo_stroke(im->cr);
+ cairo_restore(im->cr);
+ }
+ break;
+ default:
+ break;
+ }
+ }
+
+
+ switch (im->imgformat) {
+ case IF_PNG:
+ {
+ cairo_status_t status;