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Implement iqm joint loading.

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This commit is contained in:
Bill Currie 2012-05-10 14:47:46 +09:00
parent 9f253454e4
commit bf38e6073e
2 changed files with 33 additions and 1 deletions
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13
include/QF/iqm.h
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@ -114,14 +114,25 @@ typedef struct iqmextension_s {
uint32_t ofs_extensions; // pointer to next extension
} iqmextension;
// QF stuff
typedef struct {
DualQuat_t rt;
quat_t shear;
quat_t scale;
} iqmframe_t;
typedef struct {
byte *vertices;
uint16_t *elements;
int num_arrays;
iqmvertexarray *vertexarrays;
int num_joints;
iqmjoint *joints;
mat4_t *baseframe;
mat4_t *inverse_baseframe;
int num_frames;
DualQuat_t **frames;
iqmframe_t **frames;
} iqm_t;
#endif//__QF_iqm_h__

21
libs/models/iqm/model_iqm.c
View file

@ -118,6 +118,7 @@ get_joints (const iqmheader *hdr, byte *buffer)
{
iqmjoint *joint;
uint32_t i, j;
float t;
if (hdr->ofs_joints + hdr->num_joints * sizeof (iqmjoint) > hdr->filesize)
return 0;
@ -134,6 +135,10 @@ get_joints (const iqmheader *hdr, byte *buffer)
joint[i].translate[j] = LittleFloat (joint[i].translate[j]);
for (j = 0; j < 4; j++)
joint[i].rotate[j] = LittleFloat (joint[i].rotate[j]);
// iqm quaternions use xyzw but QF quaternions use wxyz
t = joint[i].rotate[3];
memmove (&joint[i].rotate[1], &joint[i].rotate[0], 3 * sizeof (float));
joint[i].rotate[0] = t;
for (j = 0; j < 3; j++)
joint[i].scale[j] = LittleFloat (joint[i].scale[j]);
}
@ -345,6 +350,22 @@ load_iqm_meshes (model_t *mod, const iqmheader *hdr, byte *buffer)
return false;
if (!(joints = get_joints (hdr, buffer)))
return false;
iqm->num_joints = hdr->num_joints;
iqm->joints = malloc (iqm->num_joints * sizeof (iqmjoint));
iqm->baseframe = malloc (iqm->num_joints * sizeof (mat4_t));
iqm->inverse_baseframe = malloc (iqm->num_joints * sizeof (mat4_t));
memcpy (iqm->joints, joints, iqm->num_joints * sizeof (iqmjoint));
for (i = 0; i < hdr->num_joints; i++) {
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);
Mat4Inverse (*bf, *ibf);
if (j->parent >= 0) {
Mat4Mult (iqm->baseframe[j->parent], *bf, *bf);
Mat4Mult (*ibf, iqm->inverse_baseframe[j->parent], *ibf);
}
}
return true;
}