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Diffstat (limited to 'src/sim/sim_primitives.c')
-rw-r--r--src/sim/sim_primitives.c83
1 files changed, 58 insertions, 25 deletions
diff --git a/src/sim/sim_primitives.c b/src/sim/sim_primitives.c
index 9f6f969..9470b21 100644
--- a/src/sim/sim_primitives.c
+++ b/src/sim/sim_primitives.c
@@ -145,7 +145,7 @@ static cdPoint* sPolyAddArc(cdCanvas* canvas, cdPoint* poly, int *n, int xc, int
double c, s, sx, sy, x, y, prev_x, prev_y;
double da;
int i, K, k, p, new_n;
-// yc2 = 2*yc,
+ cdPoint* old_poly = poly;
/* number of segments of equivalent poligonal for a full ellipse */
K = cdSimCalcEllipseNumSegments(canvas, xc, yc, width, height);
@@ -158,7 +158,7 @@ static cdPoint* sPolyAddArc(cdCanvas* canvas, cdPoint* poly, int *n, int xc, int
new_n = *n + K+1; /* add room for K+1 samples */
poly = (cdPoint*)realloc(poly, sizeof(cdPoint)*(new_n+2)); /* add room also for points at start and end */
- if (!poly) return NULL;
+ if (!poly) {free(old_poly); return NULL;}
i = *n;
/* generates arc points at origin with axis x and y */
@@ -184,9 +184,6 @@ static cdPoint* sPolyAddArc(cdCanvas* canvas, cdPoint* poly, int *n, int xc, int
poly[i].x = _cdRound(x)+xc;
poly[i].y = _cdRound(y)+yc;
-// if (canvas->invert_yaxis) /* must invert because of the angle orientation */
-// poly[i].y = yc2 - poly[i].y;
-
p = i+1;
for (k = 1; k < K+1; k++)
{
@@ -196,9 +193,6 @@ static cdPoint* sPolyAddArc(cdCanvas* canvas, cdPoint* poly, int *n, int xc, int
poly[p].x = _cdRound(x)+xc;
poly[p].y = _cdRound(y)+yc;
-// if (canvas->invert_yaxis) /* must invert because of the angle orientation */
-// poly[p].y = yc2 - poly[p].y;
-
if (poly[p-1].x != poly[p].x ||
poly[p-1].y != poly[p].y)
p++;
@@ -215,6 +209,7 @@ static cdfPoint* sfPolyAddArc(cdCanvas* canvas, cdfPoint* poly, int *n, double x
{
double c, s, sx, sy, x, y, prev_x, prev_y, da;
int i, k, p, new_n;
+ cdfPoint* old_poly = poly;
/* number of segments of equivalent poligonal for a full ellipse */
int K = cdSimCalcEllipseNumSegments(canvas, (int)xc, (int)yc, (int)width, (int)height);
@@ -227,7 +222,7 @@ static cdfPoint* sfPolyAddArc(cdCanvas* canvas, cdfPoint* poly, int *n, double x
new_n = *n + K+1; /* add room for K+1 samples */
poly = (cdfPoint*)realloc(poly, sizeof(cdfPoint)*(new_n+2)); /* add room also for points at start and end */
- if (!poly) return NULL;
+ if (!poly) {free(old_poly); return NULL;}
i = *n;
/* generates arc points at origin with axis x and y */
@@ -276,7 +271,7 @@ static cdfPoint* sfPolyAddArc(cdCanvas* canvas, cdfPoint* poly, int *n, double x
void cdSimArc(cdCtxCanvas* ctxcanvas, int xc, int yc, int width, int height, double angle1, double angle2)
{
cdCanvas* canvas = ((cdCtxCanvasBase*)ctxcanvas)->canvas;
- int n;
+ int n = 0;
cdPoint* poly = NULL;
if (canvas->line_width == 1 && canvas->cxFPoly)
@@ -298,7 +293,7 @@ void cdfSimArc(cdCtxCanvas *ctxcanvas, double xc, double yc, double width, doubl
{
/* can be used only by drivers that implement cxFPoly */
cdCanvas* canvas = ((cdCtxCanvasBase*)ctxcanvas)->canvas;
- int n;
+ int n = 0;
cdfPoint* poly = NULL;
poly = sfPolyAddArc(canvas, poly, &n, xc, yc, width, height, angle1, angle2, NULL);
@@ -313,10 +308,12 @@ void cdfSimArc(cdCtxCanvas *ctxcanvas, double xc, double yc, double width, doubl
static void sElipse(cdCtxCanvas* ctxcanvas, int xc, int yc, int width, int height, double angle1, double angle2, int sector)
{
cdCanvas* canvas = ((cdCtxCanvasBase*)ctxcanvas)->canvas;
- int n;
+ int n = 0;
cdPoint* poly = NULL;
poly = sPolyAddArc(canvas, poly, &n, xc, yc, width, height, angle1, angle2, NULL);
+ if (!poly)
+ return;
if (poly[n-1].x != poly[0].x ||
poly[n-1].y != poly[0].y)
@@ -348,7 +345,7 @@ static void sfElipse(cdCtxCanvas* ctxcanvas, double xc, double yc, double width,
{
/* can be used only by drivers that implement cxFPoly */
cdCanvas* canvas = ((cdCtxCanvasBase*)ctxcanvas)->canvas;
- int n;
+ int n = 0;
cdfPoint* poly = NULL;
poly = sfPolyAddArc(canvas, poly, &n, xc, yc, width, height, angle1, angle2, NULL);
@@ -552,13 +549,14 @@ static cdPoint* sPolyAddBezier(cdCanvas* canvas, cdPoint* poly, int *n, cdPoint
int k, K, new_n, i;
cdfPoint pt;
cdfPoint bezier_control[4];
+ cdPoint* old_poly = poly;
sBezierForm(start, points, bezier_control);
K = sBezierNumSegments(canvas, start, points);
new_n = *n + K+1; /* add room for K+1 samples */
poly = realloc(poly, sizeof(cdPoint)*new_n);
- if (!poly) return NULL;
+ if (!poly) {free(old_poly); return NULL;}
i = *n;
/* first segment */
@@ -584,6 +582,7 @@ static cdfPoint* sPolyFAddBezier(cdCanvas* canvas, cdfPoint* poly, int *n, cdfPo
int k, K, new_n, i;
cdfPoint pt;
cdfPoint bezier_control[4], bezier[3];
+ cdfPoint* old_poly = poly;
bezier[0].x = points[0].x; bezier[1].x = points[1].x; bezier[2].x = points[2].x;
bezier[0].y = points[0].y; bezier[1].y = points[1].y; bezier[2].y = points[2].y;
@@ -593,7 +592,7 @@ static cdfPoint* sPolyFAddBezier(cdCanvas* canvas, cdfPoint* poly, int *n, cdfPo
new_n = *n + K+1; /* add room for K+1 samples */
poly = realloc(poly, sizeof(cdfPoint)*new_n);
- if (!poly) return NULL;
+ if (!poly) {free(old_poly); return NULL;}
i = *n;
/* first segment */
@@ -616,13 +615,14 @@ static cdfPoint* sfPolyAddBezier(cdCanvas* canvas, cdfPoint* poly, int *n, cdfPo
int k, K, new_n, i;
cdfPoint pt;
cdfPoint bezier_control[4];
+ cdfPoint* old_poly = poly;
sfBezierForm(start, points, bezier_control);
K = sfBezierNumSegments(canvas, start, points);
new_n = *n + K+1; /* add room for K+1 samples */
poly = realloc(poly, sizeof(cdfPoint)*new_n);
- if (!poly) return NULL;
+ if (!poly) {free(old_poly); return NULL;}
i = *n;
/* first segment */
@@ -678,6 +678,7 @@ void cdSimPolyBezier(cdCanvas* canvas, const cdPoint* points, int n)
while (n >= 3)
{
poly = sPolyAddBezier(canvas, poly, &poly_n, points[i], points+i+1);
+ if (!poly) return;
n -= 3; i += 3;
}
@@ -711,10 +712,11 @@ void cdfSimPolyBezier(cdCanvas* canvas, const cdfPoint* points, int n)
static cdPoint* sPolyAddLine(cdPoint* poly, int *n, cdPoint p1, cdPoint p2)
{
int new_n, i;
+ cdPoint* old_poly = poly;
new_n = *n + 2;
poly = realloc(poly, sizeof(cdPoint)*new_n);
- if (!poly) return NULL;
+ if (!poly) {free(old_poly); return NULL;}
i = *n;
poly[i] = p1;
@@ -727,10 +729,11 @@ static cdPoint* sPolyAddLine(cdPoint* poly, int *n, cdPoint p1, cdPoint p2)
static cdfPoint* sfPolyAddLine(cdfPoint* poly, int *n, cdfPoint p1, cdfPoint p2)
{
int new_n, i;
+ cdfPoint* old_poly = poly;
new_n = *n + 2;
poly = realloc(poly, sizeof(cdfPoint)*new_n);
- if (!poly) return NULL;
+ if (!poly) {free(old_poly); return NULL;}
i = *n;
poly[i] = p1;
@@ -744,7 +747,7 @@ void cdfSimPolyPath(cdCanvas* canvas, const cdfPoint* poly, int n)
{
int p, i, current_set = 0, path_poly_n;
cdfPoint current;
- cdfPoint* path_poly;
+ cdfPoint* path_poly, *old_path_poly;
current.x = 0;
current.y = 0;
@@ -821,8 +824,9 @@ void cdfSimPolyPath(cdCanvas* canvas, const cdfPoint* poly, int n)
path_poly[path_poly_n-1].y != path_poly[0].y)
{
path_poly_n++;
+ old_path_poly = path_poly;
path_poly = (cdfPoint*)realloc(path_poly, sizeof(cdfPoint)*path_poly_n);
- if (!path_poly) return;
+ if (!path_poly) {free(old_path_poly); return;}
/* add initial point */
path_poly[path_poly_n-1].x = path_poly[0].x;
@@ -859,7 +863,7 @@ static void sSimPolyFPath(cdCanvas* canvas, const cdPoint* poly, int n)
{
int p, i, current_set = 0, path_poly_n;
cdfPoint current, pt;
- cdfPoint* path_poly;
+ cdfPoint* path_poly, *old_path_poly;
current.x = 0;
current.y = 0;
@@ -940,8 +944,9 @@ static void sSimPolyFPath(cdCanvas* canvas, const cdPoint* poly, int n)
path_poly[path_poly_n-1].y != path_poly[0].y)
{
path_poly_n++;
+ old_path_poly = path_poly;
path_poly = (cdfPoint*)realloc(path_poly, sizeof(cdfPoint)*path_poly_n);
- if (!path_poly) return;
+ if (!path_poly) {free(old_path_poly); return;}
/* add initial point */
path_poly[path_poly_n-1].x = path_poly[0].x;
@@ -978,7 +983,7 @@ void cdSimPolyPath(cdCanvas* canvas, const cdPoint* poly, int n)
{
int p, i, current_set = 0, path_poly_n;
cdPoint current;
- cdPoint* path_poly;
+ cdPoint* path_poly, *old_path_poly;
if (canvas->line_width == 1 && canvas->cxFPoly)
{
@@ -1026,6 +1031,7 @@ void cdSimPolyPath(cdCanvas* canvas, const cdPoint* poly, int n)
case CD_PATH_LINETO:
if (i+1 > n) break;
path_poly = sPolyAddLine(path_poly, &path_poly_n, current, poly[i]);
+ if (!path_poly) return;
current = poly[i];
current_set = 1;
i++;
@@ -1048,6 +1054,7 @@ void cdSimPolyPath(cdCanvas* canvas, const cdPoint* poly, int n)
path_poly = sPolyAddArc(canvas, path_poly, &path_poly_n, xc, yc, w, h, a1, a2, &current);
else
path_poly = sPolyAddArc(canvas, path_poly, &path_poly_n, xc, yc, w, h, a1, a2, NULL);
+ if (!path_poly) return;
current = path_poly[path_poly_n-1];
current_set = 1;
@@ -1063,6 +1070,7 @@ void cdSimPolyPath(cdCanvas* canvas, const cdPoint* poly, int n)
current.y = poly[i].y;
}
path_poly = sPolyAddBezier(canvas, path_poly, &path_poly_n, current, poly+i);
+ if (!path_poly) return;
current = path_poly[path_poly_n-1];
current_set = 1;
i += 3;
@@ -1072,8 +1080,9 @@ void cdSimPolyPath(cdCanvas* canvas, const cdPoint* poly, int n)
path_poly[path_poly_n-1].y != path_poly[0].y)
{
path_poly_n++;
+ old_path_poly = path_poly;
path_poly = (cdPoint*)realloc(path_poly, sizeof(cdPoint)*path_poly_n);
- if (!path_poly) return;
+ if (!path_poly) {free(old_path_poly); return;}
/* add initial point */
path_poly[path_poly_n-1].x = path_poly[0].x;
@@ -1400,6 +1409,26 @@ static int sCheckIsBox(cdPoint* poly)
return 0;
}
+static void sGetBox(cdPoint* poly, int *xmin, int *xmax, int *ymin, int *ymax)
+{
+ int i;
+ *xmin = poly[0].x;
+ *xmax = poly[0].x;
+ *ymin = poly[0].y;
+ *ymax = poly[0].y;
+ for (i=1; i<4; i++)
+ {
+ if (poly[i].x < *xmin)
+ *xmin = poly[i].x;
+ if (poly[i].y < *ymin)
+ *ymin = poly[i].y;
+ if (poly[i].x > *xmax)
+ *xmax = poly[i].x;
+ if (poly[i].y > *ymin)
+ *ymax = poly[i].y;
+ }
+}
+
void cdSimPolyFill(cdCanvas* canvas, cdPoint* poly, int n)
{
int old_use_matrix = canvas->use_matrix;
@@ -1415,7 +1444,11 @@ void cdSimPolyFill(cdCanvas* canvas, cdPoint* poly, int n)
canvas->use_matrix = 0;
if (n == 4 && sCheckIsBox(poly))
- simFillHorizBox(canvas->simulation, poly[0].x, poly[2].x, poly[0].y, poly[2].x);
+ {
+ int xmin, xmax, ymin, ymax;
+ sGetBox(poly, &xmin, &xmax, &ymin, &ymax);
+ simFillHorizBox(canvas->simulation, xmin, xmax, ymin, ymax);
+ }
else
simPolyFill(canvas->simulation, poly, n);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-27 06:25:13 +0000