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fix arc angle bug

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This commit is contained in:
Stani 2015-07-11 18:39:51 +02:00
parent 6a06be3c7c
commit 743e113349
1 changed files with 4 additions and 3 deletions
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5
draw2dpdf/path_converter.go
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@ -47,10 +47,11 @@ func (c *PathConverter) ConvertCommand(cmd draw2d.PathCmd, vertices ...float64)
c.pdf.CurveBezierCubicTo(vertices[0], vertices[1], vertices[2], vertices[3], vertices[4], vertices[5])
return 6
case draw2d.ArcTo:
// draw2d: angles clockwise, fpdf angles counter clockwise
c.pdf.ArcTo(vertices[0], vertices[1], vertices[2], vertices[3],
0, // degRotate
vertices[4]*deg, // degStart = startAngle
(vertices[4]-vertices[5])*deg) // degEnd = startAngle-angle
-vertices[4]*deg, // degStart = -startAngle
(-vertices[4]-vertices[5])*deg) // degEnd = -startAngle-angle
return 6
default: // case draw2d.Close:
c.pdf.ClosePath()