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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Contributor(s): Esteban Tovagliari, Cedric Paille, Kevin Dietrich
*
* ***** END GPL LICENSE BLOCK *****
*/
#include "abc_util.h"
#include <algorithm>
extern "C" {
#include "DNA_object_types.h"
#include "BLI_math.h"
}
std::string get_id_name(Object *ob)
{
if (!ob) {
return "";
}
return get_id_name(&ob->id);
}
std::string get_id_name(ID *id)
{
std::string name(id->name + 2);
std::replace(name.begin(), name.end(), ' ', '_');
std::replace(name.begin(), name.end(), '.', '_');
std::replace(name.begin(), name.end(), ':', '_');
return name;
}
std::string get_object_dag_path_name(Object *ob, Object *dupli_parent)
{
std::string name = get_id_name(ob);
Object *p = ob->parent;
while (p) {
name = get_id_name(p) + "/" + name;
p = p->parent;
}
if (dupli_parent && (ob != dupli_parent)) {
name = get_id_name(dupli_parent) + "/" + name;
}
return name;
}
bool object_selected(Object *ob)
{
return ob->flag & SELECT;
}
bool parent_selected(Object *ob)
{
if (object_selected(ob)) {
return true;
}
bool do_export = false;
Object *parent = ob->parent;
while (parent != NULL) {
if (object_selected(parent)) {
do_export = true;
break;
}
parent = parent->parent;
}
return do_export;
}
Imath::M44d convert_matrix(float mat[4][4])
{
Imath::M44d m;
for (int i = 0; i < 4; ++i) {
for (int j = 0; j < 4; ++j) {
m[i][j] = mat[i][j];
}
}
return m;
}
void split(const std::string &s, const char delim, std::vector<std::string> &tokens)
{
tokens.clear();
std::stringstream ss(s);
std::string item;
while (std::getline(ss, item, delim)) {
if (!item.empty()) {
tokens.push_back(item);
}
}
}
/* Create a rotation matrix for each axis from euler angles.
* Euler angles are swaped to change coordinate system. */
static void create_rotation_matrix(
float rot_x_mat[3][3], float rot_y_mat[3][3],
float rot_z_mat[3][3], const float euler[3], const bool to_yup)
{
const float rx = euler[0];
const float ry = (to_yup) ? euler[2] : -euler[2];
const float rz = (to_yup) ? -euler[1] : euler[1];
unit_m3(rot_x_mat);
unit_m3(rot_y_mat);
unit_m3(rot_z_mat);
rot_x_mat[1][1] = cos(rx);
rot_x_mat[2][1] = -sin(rx);
rot_x_mat[1][2] = sin(rx);
rot_x_mat[2][2] = cos(rx);
rot_y_mat[2][2] = cos(ry);
rot_y_mat[0][2] = -sin(ry);
rot_y_mat[2][0] = sin(ry);
rot_y_mat[0][0] = cos(ry);
rot_z_mat[0][0] = cos(rz);
rot_z_mat[1][0] = -sin(rz);
rot_z_mat[0][1] = sin(rz);
rot_z_mat[1][1] = cos(rz);
}
/* Recompute transform matrix of object in new coordinate system
* (from Y-Up to Z-Up). */
void create_transform_matrix(float r_mat[4][4])
{
float rot_mat[3][3], rot[3][3], scale_mat[4][4], invmat[4][4], transform_mat[4][4];
float rot_x_mat[3][3], rot_y_mat[3][3], rot_z_mat[3][3];
float loc[3], scale[3], euler[3];
zero_v3(loc);
zero_v3(scale);
zero_v3(euler);
unit_m3(rot);
unit_m3(rot_mat);
unit_m4(scale_mat);
unit_m4(transform_mat);
unit_m4(invmat);
/* Compute rotation matrix. */
/* Extract location, rotation, and scale from matrix. */
mat4_to_loc_rot_size(loc, rot, scale, r_mat);
/* Get euler angles from rotation matrix. */
mat3_to_eulO(euler, ROT_MODE_XYZ, rot);
/* Create X, Y, Z rotation matrices from euler angles. */
create_rotation_matrix(rot_x_mat, rot_y_mat, rot_z_mat, euler, false);
/* Concatenate rotation matrices. */
mul_m3_m3m3(rot_mat, rot_mat, rot_y_mat);
mul_m3_m3m3(rot_mat, rot_mat, rot_z_mat);
mul_m3_m3m3(rot_mat, rot_mat, rot_x_mat);
/* Add rotation matrix to transformation matrix. */
copy_m4_m3(transform_mat, rot_mat);
/* Add translation to transformation matrix. */
copy_yup_zup(transform_mat[3], loc);
/* Create scale matrix. */
scale_mat[0][0] = scale[0];
scale_mat[1][1] = scale[2];
scale_mat[2][2] = scale[1];
/* Add scale to transformation matrix. */
mul_m4_m4m4(transform_mat, transform_mat, scale_mat);
copy_m4_m4(r_mat, transform_mat);
}
void convert_matrix(const Imath::M44d &xform, Object *ob,
float r_mat[4][4], float scale, bool has_alembic_parent)
{
for (int i = 0; i < 4; ++i) {
for (int j = 0; j < 4; ++j) {
r_mat[i][j] = xform[i][j];
}
}
if (ob->type == OB_CAMERA) {
float cam_to_yup[4][4];
unit_m4(cam_to_yup);
rotate_m4(cam_to_yup, 'X', M_PI_2);
mul_m4_m4m4(r_mat, r_mat, cam_to_yup);
}
create_transform_matrix(r_mat);
if (ob->parent) {
mul_m4_m4m4(r_mat, ob->parent->obmat, r_mat);
}
/* TODO(kevin) */
else if (!has_alembic_parent) {
/* Only apply scaling to root objects, parenting will propagate it. */
float scale_mat[4][4];
scale_m4_fl(scale_mat, scale);
mul_m4_m4m4(r_mat, r_mat, scale_mat);
mul_v3_fl(r_mat[3], scale);
}
}
/* Recompute transform matrix of object in new coordinate system (from Z-Up to Y-Up). */
void create_transform_matrix(Object *obj, float transform_mat[4][4])
{
float rot_mat[3][3], rot[3][3], scale_mat[4][4], invmat[4][4], mat[4][4];
float rot_x_mat[3][3], rot_y_mat[3][3], rot_z_mat[3][3];
float loc[3], scale[3], euler[3];
zero_v3(loc);
zero_v3(scale);
zero_v3(euler);
unit_m3(rot);
unit_m3(rot_mat);
unit_m4(scale_mat);
unit_m4(transform_mat);
unit_m4(invmat);
unit_m4(mat);
/* get local matrix. */
if (obj->parent) {
invert_m4_m4(invmat, obj->parent->obmat);
mul_m4_m4m4(mat, invmat, obj->obmat);
}
else {
copy_m4_m4(mat, obj->obmat);
}
/* Compute rotation matrix. */
switch (obj->rotmode) {
case ROT_MODE_AXISANGLE:
{
/* Get euler angles from axis angle rotation. */
axis_angle_to_eulO(euler, ROT_MODE_XYZ, obj->rotAxis, obj->rotAngle);
/* Create X, Y, Z rotation matrices from euler angles. */
create_rotation_matrix(rot_x_mat, rot_y_mat, rot_z_mat, euler, true);
/* Concatenate rotation matrices. */
mul_m3_m3m3(rot_mat, rot_mat, rot_y_mat);
mul_m3_m3m3(rot_mat, rot_mat, rot_z_mat);
mul_m3_m3m3(rot_mat, rot_mat, rot_x_mat);
/* Extract location and scale from matrix. */
mat4_to_loc_rot_size(loc, rot, scale, mat);
break;
}
case ROT_MODE_QUAT:
{
float q[4];
copy_v4_v4(q, obj->quat);
/* Swap axis. */
q[2] = obj->quat[3];
q[3] = -obj->quat[2];
/* Compute rotation matrix from quaternion. */
quat_to_mat3(rot_mat, q);
/* Extract location and scale from matrix. */
mat4_to_loc_rot_size(loc, rot, scale, mat);
break;
}
case ROT_MODE_XYZ:
{
/* Extract location, rotation, and scale form matrix. */
mat4_to_loc_rot_size(loc, rot, scale, mat);
/* Get euler angles from rotation matrix. */
mat3_to_eulO(euler, ROT_MODE_XYZ, rot);
/* Create X, Y, Z rotation matrices from euler angles. */
create_rotation_matrix(rot_x_mat, rot_y_mat, rot_z_mat, euler, true);
/* Concatenate rotation matrices. */
mul_m3_m3m3(rot_mat, rot_mat, rot_y_mat);
mul_m3_m3m3(rot_mat, rot_mat, rot_z_mat);
mul_m3_m3m3(rot_mat, rot_mat, rot_x_mat);
break;
}
case ROT_MODE_XZY:
{
/* Extract location, rotation, and scale form matrix. */
mat4_to_loc_rot_size(loc, rot, scale, mat);
/* Get euler angles from rotation matrix. */
mat3_to_eulO(euler, ROT_MODE_XZY, rot);
/* Create X, Y, Z rotation matrices from euler angles. */
create_rotation_matrix(rot_x_mat, rot_y_mat, rot_z_mat, euler, true);
/* Concatenate rotation matrices. */
mul_m3_m3m3(rot_mat, rot_mat, rot_z_mat);
mul_m3_m3m3(rot_mat, rot_mat, rot_y_mat);
mul_m3_m3m3(rot_mat, rot_mat, rot_x_mat);
break;
}
case ROT_MODE_YXZ:
{
/* Extract location, rotation, and scale form matrix. */
mat4_to_loc_rot_size(loc, rot, scale, mat);
/* Get euler angles from rotation matrix. */
mat3_to_eulO(euler, ROT_MODE_YXZ, rot);
/* Create X, Y, Z rotation matrices from euler angles. */
create_rotation_matrix(rot_x_mat, rot_y_mat, rot_z_mat, euler, true);
/* Concatenate rotation matrices. */
mul_m3_m3m3(rot_mat, rot_mat, rot_y_mat);
mul_m3_m3m3(rot_mat, rot_mat, rot_x_mat);
mul_m3_m3m3(rot_mat, rot_mat, rot_z_mat);
break;
}
case ROT_MODE_YZX:
{
/* Extract location, rotation, and scale form matrix. */
mat4_to_loc_rot_size(loc, rot, scale, mat);
/* Get euler angles from rotation matrix. */
mat3_to_eulO(euler, ROT_MODE_YZX, rot);
/* Create X, Y, Z rotation matrices from euler angles. */
create_rotation_matrix(rot_x_mat, rot_y_mat, rot_z_mat, euler, true);
/* Concatenate rotation matrices. */
mul_m3_m3m3(rot_mat, rot_mat, rot_x_mat);
mul_m3_m3m3(rot_mat, rot_mat, rot_y_mat);
mul_m3_m3m3(rot_mat, rot_mat, rot_z_mat);
break;
}
case ROT_MODE_ZXY:
{
/* Extract location, rotation, and scale form matrix. */
mat4_to_loc_rot_size(loc, rot, scale, mat);
/* Get euler angles from rotation matrix. */
mat3_to_eulO(euler, ROT_MODE_ZXY, rot);
/* Create X, Y, Z rotation matrices from euler angles. */
create_rotation_matrix(rot_x_mat, rot_y_mat, rot_z_mat, euler, true);
/* Concatenate rotation matrices. */
mul_m3_m3m3(rot_mat, rot_mat, rot_z_mat);
mul_m3_m3m3(rot_mat, rot_mat, rot_x_mat);
mul_m3_m3m3(rot_mat, rot_mat, rot_y_mat);
break;
}
case ROT_MODE_ZYX:
{
/* Extract location, rotation, and scale form matrix. */
mat4_to_loc_rot_size(loc, rot, scale, mat);
/* Get euler angles from rotation matrix. */
mat3_to_eulO(euler, ROT_MODE_ZYX, rot);
/* Create X, Y, Z rotation matrices from euler angles. */
create_rotation_matrix(rot_x_mat, rot_y_mat, rot_z_mat, euler, true);
/* Concatenate rotation matrices. */
mul_m3_m3m3(rot_mat, rot_mat, rot_x_mat);
mul_m3_m3m3(rot_mat, rot_mat, rot_z_mat);
mul_m3_m3m3(rot_mat, rot_mat, rot_y_mat);
break;
}
}
/* Add rotation matrix to transformation matrix. */
copy_m4_m3(transform_mat, rot_mat);
/* Add translation to transformation matrix. */
copy_zup_yup(transform_mat[3], loc);
/* Create scale matrix. */
scale_mat[0][0] = scale[0];
scale_mat[1][1] = scale[2];
scale_mat[2][2] = scale[1];
/* Add scale to transformation matrix. */
mul_m4_m4m4(transform_mat, transform_mat, scale_mat);
}
bool has_property(const Alembic::Abc::ICompoundProperty &prop, const std::string &name)
{
if (!prop.valid()) {
return false;
}
return prop.getPropertyHeader(name) != NULL;
}
typedef std::pair<Alembic::AbcCoreAbstract::index_t, float> index_time_pair_t;
float get_weight_and_index(float time,
const Alembic::AbcCoreAbstract::TimeSamplingPtr &time_sampling,
int samples_number,
Alembic::AbcGeom::index_t &i0,
Alembic::AbcGeom::index_t &i1)
{
samples_number = std::max(samples_number, 1);
index_time_pair_t t0 = time_sampling->getFloorIndex(time, samples_number);
i0 = i1 = t0.first;
if (samples_number == 1 || (fabs(time - t0.second) < 0.0001f)) {
return 0.0f;
}
index_time_pair_t t1 = time_sampling->getCeilIndex(time, samples_number);
i1 = t1.first;
if (i0 == i1) {
return 0.0f;
}
const float bias = (time - t0.second) / (t1.second - t0.second);
if (fabs(1.0f - bias) < 0.0001f) {
i0 = i1;
return 0.0f;
}
return bias;
}
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