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-rw-r--r--src/svg/cdsvg.c57
1 files changed, 38 insertions, 19 deletions
diff --git a/src/svg/cdsvg.c b/src/svg/cdsvg.c
index f84e4b5..789ece3 100644
--- a/src/svg/cdsvg.c
+++ b/src/svg/cdsvg.c
@@ -215,9 +215,36 @@ 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(cdCtxCanvas* ctxcanvas, 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)
{
- if (ctxcanvas->canvas->invert_yaxis==0)
+ /* computation is done as if the angles are counterclockwise,
+ and yaxis is NOT inverted. */
+
+ 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;
+ }
+
+ 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;
@@ -263,7 +290,7 @@ static void cdfarc(cdCtxCanvas *ctxcanvas, double xc, double yc, double w, doubl
return;
}
- sCalcArc(ctxcanvas, 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);
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);
@@ -286,7 +313,7 @@ static void cdfsector(cdCtxCanvas *ctxcanvas, double xc, double yc, double w, do
return;
}
- sCalcArc(ctxcanvas, 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);
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);
@@ -302,7 +329,7 @@ static void cdfchord(cdCtxCanvas *ctxcanvas, double xc, double yc, double w, dou
double arcStartX, arcStartY, arcEndX, arcEndY;
int largeArc;
- sCalcArc(ctxcanvas, 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);
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);
@@ -477,14 +504,10 @@ static void cdfpoly(cdCtxCanvas *ctxcanvas, int mode, cdfPoint* poly, int n)
if (i+3 > n) return;
- xc = poly[i].x,
- yc = poly[i].y,
- w = poly[i+1].x,
- h = poly[i+1].y,
- a1 = poly[i+2].x,
- a2 = poly[i+2].y;
+ if (!cdfCanvasGetArcPath(ctxcanvas->canvas, poly+i, &xc, &yc, &w, &h, &a1, &a2))
+ return;
- sCalcArc(ctxcanvas, 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);
fprintf(ctxcanvas->file, "M %g %g A %g %g 0 %d 0 %g %g ",
arcStartX, arcStartY, w/2, h/2, largeArc, arcEndX, arcEndY);
@@ -636,14 +659,10 @@ static void cdpoly(cdCtxCanvas *ctxcanvas, int mode, cdPoint* poly, int n)
if (i+3 > n) return;
- xc = poly[i].x,
- yc = poly[i].y,
- w = poly[i+1].x,
- h = poly[i+1].y,
- a1 = poly[i+2].x/1000.0,
- a2 = poly[i+2].y/1000.0;
+ if (!cdCanvasGetArcPath(ctxcanvas->canvas, poly+i, &xc, &yc, &w, &h, &a1, &a2))
+ return;
- sCalcArc(ctxcanvas, 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);
fprintf(ctxcanvas->file, "M %g %g A %d %d 0 %d 0 %g %g ",
arcStartX, arcStartY, w/2, h/2, largeArc, arcEndX, arcEndY);