static void cdpoly(cdCtxCanvas *ctxcanvas, int mode, cdPoint* poly, int n)
{
int i;
if (mode != CD_BEZIER && mode != CD_PATH)
{
for (i = 0; i < n; i++)
{
if (ctxcanvas->canvas->use_matrix)
cdMatrixTransformPoint(ctxcanvas->xmatrix, poly[i].x, poly[i].y, &(poly[i].x), &(poly[i].y));
}
}
switch( mode )
{
case CD_FILL:
if (ctxcanvas->canvas->new_region)
{
GdkRegion* rgn = gdk_region_polygon((GdkPoint*)poly, n, ctxcanvas->canvas->fill_mode == CD_EVENODD ? GDK_EVEN_ODD_RULE : GDK_WINDING_RULE);
sCombineRegion(ctxcanvas, rgn);
}
else
gdk_draw_polygon(ctxcanvas->wnd, ctxcanvas->gc, TRUE, (GdkPoint*)poly, n);
break;
case CD_CLOSED_LINES:
cdgdkCheckSolidStyle(ctxcanvas, 1);
gdk_draw_polygon(ctxcanvas->wnd, ctxcanvas->gc, FALSE, (GdkPoint*)poly, n);
cdgdkCheckSolidStyle(ctxcanvas, 0);
break;
case CD_OPEN_LINES:
cdgdkCheckSolidStyle(ctxcanvas, 1);
gdk_draw_lines(ctxcanvas->wnd, ctxcanvas->gc, (GdkPoint*)poly, n);
cdgdkCheckSolidStyle(ctxcanvas, 0);
break;
case CD_CLIP:
ctxcanvas->clip_rgn = gdk_region_polygon((GdkPoint*)poly, n, ctxcanvas->canvas->fill_mode == CD_EVENODD ? GDK_EVEN_ODD_RULE : GDK_WINDING_RULE);
if (ctxcanvas->canvas->clip_mode == CD_CLIPPOLYGON)
cdclip(ctxcanvas, CD_CLIPPOLYGON);
break;
case CD_BEZIER:
cdSimPolyBezier(ctxcanvas->canvas, poly, n);
break;
case CD_PATH:
cdSimPolyPath(ctxcanvas->canvas, poly, n);
break;
}
}
static void cdpoly(cdCtxCanvas *ctxcanvas, int mode, cdPoint* poly, int n)
{
int i;
if (mode == CD_CLIP)
return;
if (mode == CD_BEZIER)
{
int i, prec = 100;
float (*points)[3] = malloc(n * sizeof(*points));
for(i = 0; i < n; i++)
{
points[i][0] = (float)poly[i].x;
points[i][1] = (float)poly[i].y;
points[i][2] = 0;
}
glMap1f(GL_MAP1_VERTEX_3, 0.0, 1.0, 3, n, &points[0][0]);
glEnable(GL_MAP1_VERTEX_3);
glMapGrid1f(prec, 0.0, 1.0);
glEvalMesh1(GL_LINE, 0, prec);
glDisable(GL_MAP1_VERTEX_3);
free(points);
return;
}
if (mode == CD_PATH)
{
cdSimPolyPath(ctxcanvas->canvas, poly, n);
return;
}
switch (mode)
{
case CD_CLOSED_LINES :
glBegin(GL_LINE_LOOP);
break;
case CD_OPEN_LINES :
glBegin(GL_LINE_STRIP);
break;
case CD_FILL :
if(ctxcanvas->canvas->back_opacity == CD_OPAQUE && glIsEnabled(GL_POLYGON_STIPPLE))
{
/* draw twice, one with background color only, and one with foreground color */
glDisable(GL_POLYGON_STIPPLE);
glColor4ub(cdRed(ctxcanvas->canvas->background),
cdGreen(ctxcanvas->canvas->background),
cdBlue(ctxcanvas->canvas->background),
cdAlpha(ctxcanvas->canvas->background));
glBegin(GL_POLYGON);
for(i = 0; i < n; i++)
glVertex2i(poly[i].x, poly[i].y);
glEnd();
/* restore the foreground color */
glColor4ub(cdRed(ctxcanvas->canvas->foreground),
cdGreen(ctxcanvas->canvas->foreground),
cdBlue(ctxcanvas->canvas->foreground),
cdAlpha(ctxcanvas->canvas->foreground));
glEnable(GL_POLYGON_STIPPLE);
}
glBegin(GL_POLYGON);
break;
}
for(i = 0; i < n; i++)
glVertex2i(poly[i].x, poly[i].y);
glEnd();
(void)ctxcanvas;
}
