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Diffstat (limited to 'src/svg/cdsvg.c')
-rw-r--r--src/svg/cdsvg.c112
1 files changed, 52 insertions, 60 deletions
diff --git a/src/svg/cdsvg.c b/src/svg/cdsvg.c
index 789ece3..677a91f 100644
--- a/src/svg/cdsvg.c
+++ b/src/svg/cdsvg.c
@@ -215,63 +215,29 @@ static void cdbox(cdCtxCanvas *ctxcanvas, int xmin, int xmax, int ymin, int ymax
cdfbox(ctxcanvas, (double)xmin, (double)xmax, (double)ymin, (double)ymax);
}
-static void sCalcArc(cdCanvas* canvas, double xc, double yc, double w, double h, double a1, double a2, double *arcStartX, double *arcStartY, double *arcEndX, double *arcEndY, int *largeArc)
+static void sCalcArc(cdCanvas* canvas, double xc, double yc, double w, double h, double a1, double a2, double *arcStartX, double *arcStartY, double *arcEndX, double *arcEndY, int *largeArc, int swap)
{
/* computation is done as if the angles are counterclockwise,
and yaxis is NOT inverted. */
+ cdfCanvasGetArcStartEnd(xc, yc, w, h, a1, a2, arcStartX, arcStartY, arcEndX, arcEndY);
+
if (canvas->invert_yaxis)
{
- double t;
-
- /* change orientation */
- a1 *= -1;
- a2 *= -1;
-
- /* swap, so the start angle is the smaller */
- t = a1;
- a1 = a2;
- a2 = t;
+ /* fix axis orientation */
+ *arcStartY = 2*yc - *arcStartY;
+ *arcEndY = 2*yc - *arcEndY;
}
-
- cdfCanvasGetArcStartEnd(xc, yc, w, h, a1, a2, arcStartX, arcStartY, arcEndX, arcEndY);
-
- if (fabs(a2-a1) > 180.0)
- *largeArc = 1;
else
- *largeArc = 0;
-}
-
-static void sCalcArc_OLD(cdCanvas* canvas, double xc, double yc, double w, double h, double a1, double a2, double *arcStartX, double *arcStartY, double *arcEndX, double *arcEndY, int *largeArc)
-{
- if (canvas->invert_yaxis==0)
{
- double t;
-
- /* if NOT inverted means a transformation is set,
- so the angle will follow the transformation that includes the axis invertion,
- then it is clockwise. */
-
- /* this situation is inverted compared to the Cairo driver */
-
- /* change angle orientation */
- a1 = 360 - a1;
- a2 = 360 - a2;
-
- /* swap, so the start angle is the smaller */
- t = a1;
- a1 = a2;
- a2 = t;
+ /* it is clock-wise when axis NOT inverted */
+ if (swap)
+ {
+ _cdSwapDouble(*arcStartX, *arcEndX);
+ _cdSwapDouble(*arcStartY, *arcEndY);
+ }
}
- /* computation is done as if the angles are counterclockwise,
- and yaxis is inverted. */
-
- *arcStartX = xc + (w/2.0)*cos(a1*CD_DEG2RAD);
- *arcStartY = yc - (h/2.0)*sin(a1*CD_DEG2RAD);
- *arcEndX = xc + (w/2.0)*cos(a2*CD_DEG2RAD);
- *arcEndY = yc - (h/2.0)*sin(a2*CD_DEG2RAD);
-
if (fabs(a2-a1) > 180.0)
*largeArc = 1;
else
@@ -290,7 +256,7 @@ static void cdfarc(cdCtxCanvas *ctxcanvas, double xc, double yc, double w, doubl
return;
}
- sCalcArc(ctxcanvas->canvas, xc, yc, w, h, a1, a2, &arcStartX, &arcStartY, &arcEndX, &arcEndY, &largeArc);
+ sCalcArc(ctxcanvas->canvas, xc, yc, w, h, a1, a2, &arcStartX, &arcStartY, &arcEndX, &arcEndY, &largeArc, 1);
fprintf(ctxcanvas->file, "<path d=\"M%g,%g A%g,%g 0 %d,0 %g,%g\" style=\"fill:none; stroke:%s; stroke-width:%d; stroke-linecap:%s; stroke-linejoin:%s; stroke-dasharray:%s; opacity:%g\" />\n",
arcStartX, arcStartY, w/2, h/2, largeArc, arcEndX, arcEndY, ctxcanvas->fgColor, ctxcanvas->canvas->line_width, ctxcanvas->linecap, ctxcanvas->linejoin, ctxcanvas->linestyle, ctxcanvas->opacity);
@@ -313,7 +279,7 @@ static void cdfsector(cdCtxCanvas *ctxcanvas, double xc, double yc, double w, do
return;
}
- sCalcArc(ctxcanvas->canvas, xc, yc, w, h, a1, a2, &arcStartX, &arcStartY, &arcEndX, &arcEndY, &largeArc);
+ sCalcArc(ctxcanvas->canvas, xc, yc, w, h, a1, a2, &arcStartX, &arcStartY, &arcEndX, &arcEndY, &largeArc, 1);
fprintf(ctxcanvas->file, "<path d=\"M%g,%g L%g,%g A%g,%g 0 %d,0 %g,%g Z\" style=\"fill:%s; stroke:none; opacity:%g\" />\n",
xc, yc, arcStartX, arcStartY, w/2, h/2, largeArc, arcEndX, arcEndY, (ctxcanvas->canvas->interior_style == CD_SOLID) ? ctxcanvas->fgColor: ctxcanvas->pattern, ctxcanvas->opacity);
@@ -329,7 +295,7 @@ static void cdfchord(cdCtxCanvas *ctxcanvas, double xc, double yc, double w, dou
double arcStartX, arcStartY, arcEndX, arcEndY;
int largeArc;
- sCalcArc(ctxcanvas->canvas, xc, yc, w, h, a1, a2, &arcStartX, &arcStartY, &arcEndX, &arcEndY, &largeArc);
+ sCalcArc(ctxcanvas->canvas, xc, yc, w, h, a1, a2, &arcStartX, &arcStartY, &arcEndX, &arcEndY, &largeArc, 1);
fprintf(ctxcanvas->file, "<path d=\"M%g,%g A%g,%g 0 %d,0 %g,%g Z\" style=\"fill:%s; stroke:none; opacity:%g\" />\n",
arcStartX, arcStartY, w/2, h/2, largeArc, arcEndX, arcEndY, (ctxcanvas->canvas->interior_style == CD_SOLID) ? ctxcanvas->fgColor: ctxcanvas->pattern, ctxcanvas->opacity);
@@ -456,7 +422,7 @@ static void cdfpoly(cdCtxCanvas *ctxcanvas, int mode, cdfPoint* poly, int n)
if (mode == CD_PATH)
{
- int i, p, clip_path = 0, end_path;
+ int i, p, clip_path = 0, end_path, current_set;
for (p=0; p<ctxcanvas->canvas->path_n; p++)
{
@@ -473,6 +439,7 @@ static void cdfpoly(cdCtxCanvas *ctxcanvas, int mode, cdfPoint* poly, int n)
/* starts a new path */
fprintf(ctxcanvas->file, "<path d=\"");
end_path = 0;
+ current_set = 0;
i = 0;
for (p=0; p<ctxcanvas->canvas->path_n; p++)
@@ -485,33 +452,44 @@ static void cdfpoly(cdCtxCanvas *ctxcanvas, int mode, cdfPoint* poly, int n)
fprintf(ctxcanvas->file, "<path d=\"");
end_path = 0;
+ current_set = 0;
break;
case CD_PATH_MOVETO:
if (i+1 > n) return;
fprintf(ctxcanvas->file, "M %g %g ", poly[i].x, poly[i].y);
+ current_set = 1;
i++;
break;
case CD_PATH_LINETO:
if (i+1 > n) return;
fprintf(ctxcanvas->file, "L %g %g ", poly[i].x, poly[i].y);
+ current_set = 1;
i++;
break;
case CD_PATH_ARC:
{
double xc, yc, w, h, a1, a2;
double arcStartX, arcStartY, arcEndX, arcEndY;
- int largeArc;
+ int largeArc, sweep = 0;
if (i+3 > n) return;
if (!cdfCanvasGetArcPath(ctxcanvas->canvas, poly+i, &xc, &yc, &w, &h, &a1, &a2))
return;
- sCalcArc(ctxcanvas->canvas, xc, yc, w, h, a1, a2, &arcStartX, &arcStartY, &arcEndX, &arcEndY, &largeArc);
+ sCalcArc(ctxcanvas->canvas, xc, yc, w, h, a1, a2, &arcStartX, &arcStartY, &arcEndX, &arcEndY, &largeArc, 0);
- fprintf(ctxcanvas->file, "M %g %g A %g %g 0 %d 0 %g %g ",
- arcStartX, arcStartY, w/2, h/2, largeArc, arcEndX, arcEndY);
+ if (ctxcanvas->canvas->invert_yaxis && (a2-a1)<0) /* can be clockwise */
+ sweep = 1;
+ if (current_set)
+ fprintf(ctxcanvas->file, "L %g %g A %g %g 0 %d %d %g %g ",
+ arcStartX, arcStartY, w/2, h/2, largeArc, sweep, arcEndX, arcEndY);
+ else
+ fprintf(ctxcanvas->file, "M %g %g A %g %g 0 %d %d %g %g ",
+ arcStartX, arcStartY, w/2, h/2, largeArc, sweep, arcEndX, arcEndY);
+
+ current_set = 1;
i += 3;
}
break;
@@ -520,6 +498,7 @@ static void cdfpoly(cdCtxCanvas *ctxcanvas, int mode, cdfPoint* poly, int n)
fprintf(ctxcanvas->file, "C %g %g %g %g %g %g ", poly[i].x, poly[i].y,
poly[i+1].x, poly[i+1].y,
poly[i+2].x, poly[i+2].y);
+ current_set = 1;
i += 3;
break;
case CD_PATH_CLOSE:
@@ -610,7 +589,7 @@ static void cdpoly(cdCtxCanvas *ctxcanvas, int mode, cdPoint* poly, int n)
if (mode == CD_PATH)
{
- int i, p, clip_path = 0, end_path;
+ int i, p, clip_path = 0, end_path, current_set;
for (p=0; p<ctxcanvas->canvas->path_n; p++)
{
@@ -627,6 +606,7 @@ static void cdpoly(cdCtxCanvas *ctxcanvas, int mode, cdPoint* poly, int n)
/* starts a new path */
fprintf(ctxcanvas->file, "<path d=\"");
end_path = 0;
+ current_set = 0;
i = 0;
for (p=0; p<ctxcanvas->canvas->path_n; p++)
@@ -639,15 +619,18 @@ static void cdpoly(cdCtxCanvas *ctxcanvas, int mode, cdPoint* poly, int n)
fprintf(ctxcanvas->file, "<path d=\"");
end_path = 0;
+ current_set = 0;
break;
case CD_PATH_MOVETO:
if (i+1 > n) return;
fprintf(ctxcanvas->file, "M %d %d ", poly[i].x, poly[i].y);
+ current_set = 1;
i++;
break;
case CD_PATH_LINETO:
if (i+1 > n) return;
fprintf(ctxcanvas->file, "L %d %d ", poly[i].x, poly[i].y);
+ current_set = 1;
i++;
break;
case CD_PATH_ARC:
@@ -655,18 +638,26 @@ static void cdpoly(cdCtxCanvas *ctxcanvas, int mode, cdPoint* poly, int n)
int xc, yc, w, h;
double a1, a2;
double arcStartX, arcStartY, arcEndX, arcEndY;
- int largeArc;
+ int largeArc, sweep = 0;
if (i+3 > n) return;
if (!cdCanvasGetArcPath(ctxcanvas->canvas, poly+i, &xc, &yc, &w, &h, &a1, &a2))
return;
- sCalcArc(ctxcanvas->canvas, xc, yc, w, h, a1, a2, &arcStartX, &arcStartY, &arcEndX, &arcEndY, &largeArc);
+ sCalcArc(ctxcanvas->canvas, xc, yc, w, h, a1, a2, &arcStartX, &arcStartY, &arcEndX, &arcEndY, &largeArc, 0);
+
+ if (ctxcanvas->canvas->invert_yaxis && (a2-a1)<0) /* can be clockwise */
+ sweep = 1;
- fprintf(ctxcanvas->file, "M %g %g A %d %d 0 %d 0 %g %g ",
- arcStartX, arcStartY, w/2, h/2, largeArc, arcEndX, arcEndY);
+ if (current_set)
+ fprintf(ctxcanvas->file, "L %g %g A %d %d 0 %d %d %g %g ",
+ arcStartX, arcStartY, w/2, h/2, largeArc, sweep, arcEndX, arcEndY);
+ else
+ fprintf(ctxcanvas->file, "M %g %g A %d %d 0 %d %d %g %g ",
+ arcStartX, arcStartY, w/2, h/2, largeArc, sweep, arcEndX, arcEndY);
+ current_set = 1;
i += 3;
}
break;
@@ -675,6 +666,7 @@ static void cdpoly(cdCtxCanvas *ctxcanvas, int mode, cdPoint* poly, int n)
fprintf(ctxcanvas->file, "C %d %d %d %d %d %d ", poly[i].x, poly[i].y,
poly[i+1].x, poly[i+1].y,
poly[i+2].x, poly[i+2].y);
+ current_set = 1;
i += 3;
break;
case CD_PATH_CLOSE:
@@ -724,7 +716,7 @@ static void cdpoly(cdCtxCanvas *ctxcanvas, int mode, cdPoint* poly, int n)
fprintf(ctxcanvas->file, "\" />\n");
break;
case CD_BEZIER:
- fprintf(ctxcanvas->file, "<path d=\"M%g,%g C", poly[0].x, poly[0].y);
+ fprintf(ctxcanvas->file, "<path d=\"M%d,%d C", poly[0].x, poly[0].y);
sWritePoints(ctxcanvas, poly+1, n-1, 0);
fprintf(ctxcanvas->file, "\" style=\"fill:none; stroke:%s; stroke-width:%d; stroke-linecap:%s; stroke-linejoin:%s; stroke-dasharray:%s; opacity:%g\" />\n",
ctxcanvas->fgColor, ctxcanvas->canvas->line_width, ctxcanvas->linecap, ctxcanvas->linejoin, ctxcanvas->linestyle, ctxcanvas->opacity);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-09 22:46:27 +0000