asy 2.40 sources

git-svn-id: svn://tug.org/texlive/trunk@43422 c570f23f-e606-0410-a88d-b1316a301751

1 files changed, 16 insertions, 0 deletions

diff --git a/Build/source/utils/asymptote/drawelement.h b/Build/source/utils/asymptote/drawelement.h
index 2a8918eed21..cddf625b53d 100644
--- a/Build/source/utils/asymptote/drawelement.h
+++ b/Build/source/utils/asymptote/drawelement.h
@@ -22,6 +22,22 @@
 
 namespace camp {
 
+extern double T[3]; // z-component of current transform
+  
+static const double pixel=1.0; // Adaptive rendering constant.
+
+// Return one-sixth of the second derivative of the Bezier curve defined
+// by a,b,c,d at 0. 
+inline triple bezierPP(triple a, triple b, triple c) {
+  return a+c-2.0*b;
+}
+
+// Return one-third of the third derivative of the Bezier curve defined by
+// a,b,c,d.
+inline triple bezierPPP(triple a, triple b, triple c, triple d) {
+  return d-a+3.0*(b-c);
+}
+
 enum Interaction {EMBEDDED=0,BILLBOARD};
 
 void copyArray4x4C(double*& dest, const vm::array *a);