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-rw-r--r--Build/source/utils/asymptote/tr.cc4
1 files changed, 2 insertions, 2 deletions
diff --git a/Build/source/utils/asymptote/tr.cc b/Build/source/utils/asymptote/tr.cc
index d76ea846fc6..69041a5f80b 100644
--- a/Build/source/utils/asymptote/tr.cc
+++ b/Build/source/utils/asymptote/tr.cc
@@ -62,7 +62,6 @@
#endif
#include "tr.h"
-
#define DEFAULT_TILE_WIDTH 256
#define DEFAULT_TILE_HEIGHT 256
#define DEFAULT_TILE_BORDER 0
@@ -290,7 +289,8 @@ void trPerspective(TRcontext *tr,
GLdouble zNear, GLdouble zFar )
{
GLdouble xmin, xmax, ymin, ymax;
- ymax = zNear * tan(fovy * 3.14159265 / 360.0);
+ static const double halfradians=acos(-1.0)/360.0;
+ ymax = zNear * tan(fovy * halfradians);
ymin = -ymax;
xmin = ymin * aspect;
xmax = ymax * aspect;