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Ensure the rotation quats are normalized.

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Doesn't make any noticeable difference, but it doesn't hurt.
This commit is contained in:
Bill Currie 2012-05-12 23:25:21 +09:00
parent 31d89782ef
commit 202ab04572
1 changed files with 8 additions and 1 deletions
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9
libs/models/iqm/model_iqm.c
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@ -363,7 +363,11 @@ load_iqm_meshes (model_t *mod, const iqmheader *hdr, byte *buffer)
iqmjoint *j = &iqm->joints[i];
mat4_t *bf = &iqm->baseframe[i];
mat4_t *ibf = &iqm->inverse_baseframe[i];
Mat4Init (j->rotate, j->scale, j->translate, *bf);
quat_t t;
float ilen;
ilen = 1.0 / sqrt(QDotProduct (j->rotate, j->rotate));
QuatScale (j->rotate, ilen, t);
Mat4Init (t, j->scale, j->translate, *bf);
Mat4Inverse (*bf, *ibf);
if (j->parent >= 0) {
Mat4Mult (iqm->baseframe[j->parent], *bf, *bf);
@ -423,6 +427,7 @@ load_iqm_anims (model_t *mod, const iqmheader *hdr, byte *buffer)
quat_t rotation;
vec3_t scale, translation;
mat4_t mat;
float ilen;
translation[0] = p->channeloffset[0];
if (p->mask & 0x001)
@ -458,6 +463,8 @@ load_iqm_anims (model_t *mod, const iqmheader *hdr, byte *buffer)
if (p->mask & 0x200)
scale[2] += *framedata++ * p->channelscale[9];
ilen = 1.0 / sqrt(QDotProduct (rotation, rotation));
QuatScale (rotation, ilen, rotation);
Mat4Init (rotation, scale, translation, mat);
if (p->parent >= 0)
Mat4Mult (iqm->baseframe[p->parent], mat, mat);