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Fix MeshDrawer::stream

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Direction vector is computed as stop - start, but the position
in the loop is computed from stop as base, instead of from start;
this is changed to start as the base (and then offset must be added).
Multiplication of non-normalized direction vector with its length
yields square of the expected current step inside the loop;
this is changed to use the normalized direction vector.
This commit is contained in:
Nikola Milentijevic 2015-03-17 19:40:09 +01:00
parent 8f65a6d22a
commit e687c76db8
1 changed files with 2 additions and 1 deletions
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3
panda/src/grutil/meshDrawer.cxx
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@ -369,8 +369,9 @@ void MeshDrawer::stream(const LVector3 &start, const LVector3 &stop, const LVect
LVector3 relative_pos = stop; LVector3 relative_pos = stop;
LVector3 vec = stop - start; LVector3 vec = stop - start;
PN_stdfloat distance = vec.length(); PN_stdfloat distance = vec.length();
vec.normalize();
for(int i = 0; i < number; i++) { for(int i = 0; i < number; i++) {
relative_pos = stop + vec * ((i-offset)*(distance/PN_stdfloat(number))); relative_pos = start + vec * ((i+offset)*(distance/PN_stdfloat(number)));
billboard(relative_pos,frame,size,_color); billboard(relative_pos,frame,size,_color);
} }
} }