diff options
Diffstat (limited to 'source/blender/blenkernel/intern/object.c')
| -rw-r--r-- | source/blender/blenkernel/intern/object.c | 50 |
1 files changed, 35 insertions, 15 deletions
diff --git a/source/blender/blenkernel/intern/object.c b/source/blender/blenkernel/intern/object.c index c98e2d5970b..7e2ec106062 100644 --- a/source/blender/blenkernel/intern/object.c +++ b/source/blender/blenkernel/intern/object.c @@ -127,8 +127,8 @@ void clear_workob(Object *workob) { memset(workob, 0, sizeof(Object)); - workob->size[0]= workob->size[1]= workob->size[2]= 1.0; - + workob->size[0]= workob->size[1]= workob->size[2]= 1.0f; + workob->rotmode= ROT_MODE_EUL; } void copy_baseflags(struct Scene *scene) @@ -1038,6 +1038,11 @@ Object *add_object(struct Scene *scene, int type) ob->data= add_obdata_from_type(type); ob->lay= scene->lay; + + /* objects should default to having Euler XYZ rotations, + * but rotations default to quaternions + */ + ob->rotmode= ROT_MODE_EUL; base= scene_add_base(scene, ob); scene_select_base(scene, base); @@ -1582,12 +1587,34 @@ void object_scale_to_mat3(Object *ob, float mat[][3]) // TODO: this should take rotation orders into account later... void object_rot_to_mat3(Object *ob, float mat[][3]) { - float vec[3]; + float rmat[3][3], dmat[3][3]; + + /* initialise the delta-rotation matrix, which will get (pre)multiplied + * with the rotation matrix to yield the appropriate rotation + */ + Mat3One(dmat); + + /* rotations may either be quats, eulers (with various rotation orders), or axis-angle */ + if (ob->rotmode > 0) { + /* euler rotations (will cause gimble lock, but this can be alleviated a bit with rotation orders) */ + EulOToMat3(ob->rot, ob->rotmode, rmat); + EulOToMat3(ob->drot, ob->rotmode, dmat); + } + else if (ob->rotmode == ROT_MODE_AXISANGLE) { + /* axis-angle - stored in quaternion data, but not really that great for 3D-changing orientations */ + AxisAngleToMat3(&ob->quat[1], ob->quat[0], rmat); + AxisAngleToMat3(&ob->dquat[1], ob->dquat[0], dmat); + } + else { + /* quats are normalised before use to eliminate scaling issues */ + NormalQuat(ob->quat); + QuatToMat3(ob->quat, rmat); + QuatToMat3(ob->dquat, dmat); + } - vec[0]= ob->rot[0]+ob->drot[0]; - vec[1]= ob->rot[1]+ob->drot[1]; - vec[2]= ob->rot[2]+ob->drot[2]; - EulToMat3(vec, mat); + /* combine these rotations */ + // XXX is this correct? if errors, change the order of multiplication... + Mat3MulMat3(mat, dmat, rmat); } void object_to_mat3(Object *ob, float mat[][3]) /* no parent */ @@ -1600,14 +1627,7 @@ void object_to_mat3(Object *ob, float mat[][3]) /* no parent */ object_scale_to_mat3(ob, smat); /* rot */ - /* Quats arnt used yet */ - /*if(ob->transflag & OB_QUAT) { - QuatMul(q1, ob->quat, ob->dquat); - QuatToMat3(q1, rmat); - } - else {*/ - object_rot_to_mat3(ob, rmat); - /*}*/ + object_rot_to_mat3(ob, rmat); Mat3MulMat3(mat, rmat, smat); } |