TheCloud/panda3d
1
0
Fork 0
mirror of https://github.com/panda3d/panda3d.git synced 2025-10-04 02:42:49 -04:00
Code Issues Packages Projects Releases Wiki Activity

stop me before I make another ridiculous micro-optimization

Browse Source
This commit is contained in:
georges 2001-02-16 00:27:28 +00:00
parent 12452369c2
commit 7d05598cd7
1 changed files with 5 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
panda/src/mathutil/boundingSphere.cxx
View File

@ -396,7 +396,7 @@ contains_lineseg(const LPoint3f &a, const LPoint3f &b) const {
// Tangent. // Tangent.
t1 = t2 = -B / (2.0*A); t1 = t2 = -B / (2.0*A);
return (t1 >= 0.0 && t1 <= 1.0) ? return (t1 >= 0.0 && t1 <= 1.0) ?
IF_possible | IF_some : IF_no_intersection; IF_possible | IF_some : IF_no_intersection;
} }
if (radical < 0.0) { if (radical < 0.0) {
@ -404,9 +404,11 @@ contains_lineseg(const LPoint3f &a, const LPoint3f &b) const {
return IF_no_intersection; return IF_no_intersection;
} }
float reciprocal_2A = 1.0f/(2.0*A);
float sqrt_radical = sqrtf(radical); float sqrt_radical = sqrtf(radical);
t1 = ( -B - sqrt_radical ) / (2.0*A);
t2 = ( -B + sqrt_radical ) / (2.0*A); t1 = ( -B - sqrt_radical ) * reciprocal_2A;
t2 = ( -B + sqrt_radical ) * reciprocal_2A;
if (t1 >= 0.0 && t2 <= 1.0) { if (t1 >= 0.0 && t2 <= 1.0) {
return IF_possible | IF_some | IF_all; return IF_possible | IF_some | IF_all;