interesting
/
libui
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Fixed Windows uiDrawArc() for now.

This commit is contained in:
Pietro Gagliardi 2015-09-08 16:26:04 -04:00
parent c5e4c3a92d
commit 61fee661c2
1 changed files with 17 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
winarea/draw.c
View File

@ -67,7 +67,23 @@ void uiDrawRectangle(uiDrawContext *c, intmax_t x, intmax_t y, intmax_t width, i
void uiDrawArc(uiDrawContext *c, intmax_t xCenter, intmax_t yCenter, intmax_t radius, double startAngle, double endAngle, int lineFromCurrentPointToStart) void uiDrawArc(uiDrawContext *c, intmax_t xCenter, intmax_t yCenter, intmax_t radius, double startAngle, double endAngle, int lineFromCurrentPointToStart)
{ {
if (!lineFromCurrentPointToStart) { if (!lineFromCurrentPointToStart) {
// TODO int bx, by, bx2, by2;
int sx, sy, ex, ey;
// see http://stackoverflow.com/questions/32465446/how-do-i-inhibit-the-initial-line-segment-of-an-anglearc
// the idea for floor(x + 0.5) is inspired by wine
// TODO make sure this is an accurate imitation of AngleArc()
bx = xCenter - radius;
by = yCenter - radius;
bx2 = xCenter + radius;
by2 = yCenter + radius;
sx = xCenter + floor((double) radius * cos(startAngle));
sy = yCenter - floor((double) radius * sin(startAngle));
ex = xCenter + floor((double) radius * cos(endAngle));
ey = yCenter - floor((double) radius * sin(endAngle));
if (Arc(c->dc, bx, by, bx2, by2, sx, sy, ex, ey) == 0)
logLastError("error drawing current point arc in uiDrawArc()");
return;
} }
// AngleArc() expects degrees // AngleArc() expects degrees
startAngle *= (180.0 / M_PI); startAngle *= (180.0 / M_PI);