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Code Cleanup: de-duplicate bone space calculation ~(35 sloc)

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This commit is contained in:
Campbell Barton 2012-02-02 08:47:46 +00:00
parent ab4dbc6d78
commit 722e0d38ac
1 changed files with 51 additions and 88 deletions
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139
source/blender/blenkernel/intern/constraint.c
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@ -220,6 +220,50 @@ void constraints_clear_evalob (bConstraintOb *cob)
/* -------------- Space-Conversion API -------------- */
static void constraint_pchan_diff_mat(bPoseChannel *pchan, float diff_mat[4][4])
{
if (pchan->parent) {
float offs_bone[4][4];
/* construct offs_bone the same way it is done in armature.c */
copy_m4_m3(offs_bone, pchan->bone->bone_mat);
copy_v3_v3(offs_bone[3], pchan->bone->head);
offs_bone[3][1] += pchan->bone->parent->length;
if (pchan->bone->flag & BONE_HINGE) {
/* pose_mat = par_pose-space_location * chan_mat */
float tmat[4][4];
/* the rotation of the parent restposition */
copy_m4_m4(tmat, pchan->bone->parent->arm_mat);
/* the location of actual parent transform */
copy_v3_v3(tmat[3], offs_bone[3]);
zero_v3(offs_bone[3]);
mul_m4_v3(pchan->parent->pose_mat, tmat[3]);
mult_m4_m4m4(diff_mat, tmat, offs_bone);
}
else {
/* pose_mat = par_pose_mat * bone_mat * chan_mat */
if (pchan->bone->flag & BONE_NO_SCALE) {
float tmat[4][4];
copy_m4_m4(tmat, pchan->parent->pose_mat);
normalize_m4(tmat);
mult_m4_m4m4(diff_mat, tmat, offs_bone);
}
else {
mult_m4_m4m4(diff_mat, pchan->parent->pose_mat, offs_bone);
}
}
}
else {
/* pose_mat = chan_mat * arm_mat */
copy_m4_m4(diff_mat, pchan->bone->arm_mat);
}
}
/* This function is responsible for the correct transformations/conversions
* of a matrix from one space to another for constraint evaluation.
* For now, this is only implemented for Objects and PoseChannels.
@ -263,49 +307,10 @@ void constraint_mat_convertspace (Object *ob, bPoseChannel *pchan, float mat[][4
/* pose to local */
else if (to == CONSTRAINT_SPACE_LOCAL) {
if (pchan->bone) {
if (pchan->parent) {
float offs_bone[4][4];
/* construct offs_bone the same way it is done in armature.c */
copy_m4_m3(offs_bone, pchan->bone->bone_mat);
copy_v3_v3(offs_bone[3], pchan->bone->head);
offs_bone[3][1]+= pchan->bone->parent->length;
if (pchan->bone->flag & BONE_HINGE) {
/* pose_mat = par_pose-space_location * chan_mat */
float tmat[4][4];
/* the rotation of the parent restposition */
copy_m4_m4(tmat, pchan->bone->parent->arm_mat);
/* the location of actual parent transform */
copy_v3_v3(tmat[3], offs_bone[3]);
offs_bone[3][0]= offs_bone[3][1]= offs_bone[3][2]= 0.0f;
mul_m4_v3(pchan->parent->pose_mat, tmat[3]);
mult_m4_m4m4(diff_mat, tmat, offs_bone);
invert_m4_m4(imat, diff_mat);
}
else {
if (pchan->bone->flag & BONE_NO_SCALE) {
float tmat[4][4];
copy_m4_m4(tmat, pchan->parent->pose_mat);
normalize_m4(tmat);
mult_m4_m4m4(diff_mat, tmat, offs_bone);
}
else {
mult_m4_m4m4(diff_mat, pchan->parent->pose_mat, offs_bone);
}
constraint_pchan_diff_mat(pchan, diff_mat);
invert_m4_m4(imat, diff_mat);
/* pose_mat = par_pose_mat * bone_mat * chan_mat */
invert_m4_m4(imat, diff_mat);
}
}
else {
/* pose_mat = chan_mat * arm_mat */
invert_m4_m4(imat, pchan->bone->arm_mat);
}
copy_m4_m4(tempmat, mat);
mult_m4_m4m4(mat, imat, tempmat);
@ -330,53 +335,11 @@ void constraint_mat_convertspace (Object *ob, bPoseChannel *pchan, float mat[][4
{
/* local to pose - do inverse procedure that was done for pose to local */
if (pchan->bone) {
/* we need the posespace_matrix = local_matrix + (parent_posespace_matrix + restpos) */
if (pchan->parent) {
float offs_bone[4][4];
/* construct offs_bone the same way it is done in armature.c */
copy_m4_m3(offs_bone, pchan->bone->bone_mat);
copy_v3_v3(offs_bone[3], pchan->bone->head);
offs_bone[3][1]+= pchan->bone->parent->length;
if (pchan->bone->flag & BONE_HINGE) {
/* pose_mat = par_pose-space_location * chan_mat */
float tmat[4][4];
/* the rotation of the parent restposition */
copy_m4_m4(tmat, pchan->bone->parent->arm_mat);
/* the location of actual parent transform */
copy_v3_v3(tmat[3], offs_bone[3]);
zero_v3(offs_bone[3]);
mul_m4_v3(pchan->parent->pose_mat, tmat[3]);
mult_m4_m4m4(diff_mat, tmat, offs_bone);
copy_m4_m4(tempmat, mat);
mult_m4_m4m4(mat, diff_mat, tempmat);
}
else {
/* pose_mat = par_pose_mat * bone_mat * chan_mat */
if (pchan->bone->flag & BONE_NO_SCALE) {
float tmat[4][4];
copy_m4_m4(tmat, pchan->parent->pose_mat);
normalize_m4(tmat);
mult_m4_m4m4(diff_mat, tmat, offs_bone);
}
else {
mult_m4_m4m4(diff_mat, pchan->parent->pose_mat, offs_bone);
}
/* we need the posespace_matrix = local_matrix + (parent_posespace_matrix + restpos) */
constraint_pchan_diff_mat(pchan, diff_mat);
copy_m4_m4(tempmat, mat);
mult_m4_m4m4(mat, diff_mat, tempmat);
}
}
else {
copy_m4_m4(diff_mat, pchan->bone->arm_mat);
copy_m4_m4(tempmat, mat);
mult_m4_m4m4(mat, diff_mat, tempmat);
}
copy_m4_m4(tempmat, mat);
mult_m4_m4m4(mat, diff_mat, tempmat);
}
/* use pose-space as stepping stone for other spaces */