/** internal Helper */
void CGPathWriter_path_walker(void *info, const CGPathElement *elm)
{
assert(info != NULL);
CGPathWriter_t *const t = (CGPathWriter_t *)info;
assert(t->absolute && "currently only absolute positions supported.");
assert(t->buffer && "buffer to write to mustn't be NULL");
switch( elm->type ) {
case kCGPathElementMoveToPoint:
CGPathWriter_snprintf(t, "M%f,%f", elm->points[0].x, elm->points[0].y);
break;
case kCGPathElementAddLineToPoint:
CGPathWriter_snprintf(t, "L%f,%f", elm->points[0].x, elm->points[0].y);
break;
case kCGPathElementAddQuadCurveToPoint:
CGPathWriter_snprintf(t, "Q%f,%f,%f,%f", elm->points[0].x, elm->points[0].y, elm->points[1].x, elm->points[1].y);
break;
case kCGPathElementAddCurveToPoint:
CGPathWriter_snprintf(t, "C%f,%f,%f,%f,%f,%f", elm->points[0].x, elm->points[0].y, elm->points[1].x, elm->points[1].y, elm->points[2].x, elm->points[2].y);
break;
case kCGPathElementCloseSubpath:
CGPathWriter_snprintf(t, "Z");
break;
default:
fprintf(stderr, "Switch-case-fallthrough\n");
assert(0);
break;
}
}
/// internal Helper
void CGPathWriter_path_walker(void *info, const CGPathElement *elm)
{
assert(info != NULL);
CGPathWriter_t *const t = (CGPathWriter_t *)info;
if ( t->buffer == NULL )
return;
switch ( elm->type ) {
case kCGPathElementMoveToPoint:
CGPathWriter_snprintf(t, "M%f,%f", elm->points[0].x, elm->points[0].y);
break;
case kCGPathElementAddLineToPoint:
CGPathWriter_snprintf(t, "L%f,%f", elm->points[0].x, elm->points[0].y);
break;
case kCGPathElementAddQuadCurveToPoint:
CGPathWriter_snprintf(t, "Q%f,%f,%f,%f", elm->points[0].x, elm->points[0].y, elm->points[1].x, elm->points[1].y);
break;
case kCGPathElementAddCurveToPoint:
CGPathWriter_snprintf(t, "C%f,%f,%f,%f,%f,%f", elm->points[0].x, elm->points[0].y, elm->points[1].x, elm->points[1].y, elm->points[2].x, elm->points[2].y);
break;
case kCGPathElementCloseSubpath:
CGPathWriter_snprintf(t, "Z");
break;
default:
fprintf(stderr, "Switch-case-fallthrough\n");
assert(0);
break;
}
}