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Simplify extract_vector_from_segment

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This commit is contained in:
Kp 2015-05-09 17:38:59 +00:00
parent a51a7110e8
commit f3aa8e501b
1 changed files with 9 additions and 10 deletions
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19
similar/main/gameseg.cpp
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@ -1109,18 +1109,17 @@ void extract_quaternionpos(const vobjptridx_t objp, quaternionpos *qpp, int swap
// ------------------------------------------------------------------------------------------
// Extract a vector from a segment. The vector goes from the start face to the end face.
// The point on each face is the average of the four points forming the face.
static void extract_vector_from_segment(const vcsegptr_t sp, vms_vector &vp, int start, int end)
static void extract_vector_from_segment(const vcsegptr_t sp, vms_vector &vp, const uint_fast32_t istart, const uint_fast32_t iend)
{
vms_vector vs,ve;
vm_vec_zero(vs);
vm_vec_zero(ve);
for (int i=0; i<4; i++) {
vm_vec_add2(vs,Vertices[sp->verts[Side_to_verts[start][i]]]);
vm_vec_add2(ve,Vertices[sp->verts[Side_to_verts[end][i]]]);
vp = {};
auto &start = Side_to_verts[istart];
auto &end = Side_to_verts[iend];
auto &verts = sp->verts;
for (uint_fast32_t i = 0; i != 4; ++i)
{
vm_vec_add2(vp, Vertices[verts[start[i]]]);
vm_vec_sub2(vp, Vertices[verts[end[i]]]);
}
vm_vec_sub(vp,ve,vs);
vm_vec_scale(vp,F1_0/4);
}