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Merge pull request #199 from mniip/snap

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fix snapping
This commit is contained in:
jacob1 2013-12-12 12:57:53 -08:00
commit adb46f9590
1 changed files with 9 additions and 6 deletions
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15
src/gui/game/GameView.cpp
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@ -2251,12 +2251,15 @@ void GameView::OnDraw()
ui::Point GameView::lineSnapCoords(ui::Point point1, ui::Point point2)
{
ui::Point newPoint(0, 0);
float snapAngle = floor(atan2((float)point2.Y-point1.Y, point2.X-point1.X)/(M_PI*0.25)+0.5)*M_PI*0.25;
float lineMag = sqrtf(pow((float)(point2.X-point1.X),2)+pow((float)(point2.Y-point1.Y),2));
newPoint.X = (int)(lineMag*cos(snapAngle)+point1.X+0.5f);
newPoint.Y = (int)(lineMag*sin(snapAngle)+point1.Y+0.5f);
return newPoint;
ui::Point diff = point2 - point1;
if(abs(diff.X / 2) > abs(diff.Y)) // vertical
return point1 + ui::Point(diff.X, 0);
if(abs(diff.X) < abs(diff.Y / 2)) // horizontal
return point1 + ui::Point(0, diff.Y);
if(diff.X * diff.Y > 0) // NW-SE
return point1 + ui::Point((diff.X + diff.Y)/2, (diff.X + diff.Y)/2);
// SW-NE
return point1 + ui::Point((diff.X - diff.Y)/2, (diff.Y - diff.X)/2);
}
ui::Point GameView::rectSnapCoords(ui::Point point1, ui::Point point2)