common_shape: fixed arc api to draw rectangles lower than 0.

Absolute value is used to calculate number of bezier curves used
to approximate arc.

Change-Id: Idedd7fd73590d569417fc646fc7febdaaab65857

diff --git a/src/lib/tvgShape.cpp b/src/lib/tvgShape.cpp
index 8b17186..c688ffc 100644 (file)
--- a/src/lib/tvgShape.cpp
+++ b/src/lib/tvgShape.cpp
@@ -167,7 +167,7 @@ Result Shape::appendArc(float cx, float cy, float radius, float startAngle, floa
     startAngle = (startAngle * M_PI) / 180;
     sweep = sweep * M_PI / 180;
 
-    auto nCurves = ceil(sweep / M_PI_HALF);
+    auto nCurves = ceil(abs(sweep / M_PI_HALF));
     auto fract = fmod(sweep, M_PI_HALF);
     fract = (fract < std::numeric_limits<float>::epsilon()) ? M_PI_HALF : fract;