TransformReader.cpp

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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): Chingiz Dyussenov, Arystanbek Dyussenov, Nathan Letwory.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

/* COLLADABU_ASSERT, may be able to remove later */
#include "COLLADABUPlatform.h"

#include "TransformReader.h"

TransformReader::TransformReader(UnitConverter* conv) : unit_converter(conv) {}

void TransformReader::get_node_mat(float mat[][4], COLLADAFW::Node *node, std::map<COLLADAFW::UniqueId, Animation> *animation_map, Object *ob)
{
    float cur[4][4];
    float copy[4][4];

    unit_m4(mat);
    
    for (unsigned int i = 0; i < node->getTransformations().getCount(); i++) {

        COLLADAFW::Transformation *tm = node->getTransformations()[i];
        COLLADAFW::Transformation::TransformationType type = tm->getTransformationType();

            switch(type) {
            case COLLADAFW::Transformation::TRANSLATE:
                dae_translate_to_mat4(tm, cur);
                break;
            case COLLADAFW::Transformation::ROTATE:
                dae_rotate_to_mat4(tm, cur);
                break;
            case COLLADAFW::Transformation::SCALE:
                dae_scale_to_mat4(tm, cur);
                break;
            case COLLADAFW::Transformation::MATRIX:
                dae_matrix_to_mat4(tm, cur);
                break;
            case COLLADAFW::Transformation::LOOKAT:
            case COLLADAFW::Transformation::SKEW:
                fprintf(stderr, "LOOKAT and SKEW transformations are not supported yet.\n");
                break;
            }

        copy_m4_m4(copy, mat);
        mult_m4_m4m4(mat, copy, cur);

        if (animation_map) {
            // AnimationList that drives this Transformation
            const COLLADAFW::UniqueId& anim_list_id = tm->getAnimationList();
        
            // store this so later we can link animation data with ob
            Animation anim = {ob, node, tm};
            (*animation_map)[anim_list_id] = anim;
        }
    }
}

void TransformReader::dae_rotate_to_mat4(COLLADAFW::Transformation *tm, float m[][4])
{
    COLLADAFW::Rotate *ro = (COLLADAFW::Rotate*)tm;
    COLLADABU::Math::Vector3& axis = ro->getRotationAxis();
    const float angle = (float)DEG2RAD(ro->getRotationAngle());
    const float ax[] = {axis[0], axis[1], axis[2]};
    // float quat[4];
    // axis_angle_to_quat(quat, axis, angle);
    // quat_to_mat4(m, quat);
    axis_angle_to_mat4(m, ax, angle);
}

void TransformReader::dae_translate_to_mat4(COLLADAFW::Transformation *tm, float m[][4])
{
    COLLADAFW::Translate *tra = (COLLADAFW::Translate*)tm;
    COLLADABU::Math::Vector3& t = tra->getTranslation();

    unit_m4(m);

    m[3][0] = (float)t[0];
    m[3][1] = (float)t[1];
    m[3][2] = (float)t[2];
}

void TransformReader::dae_scale_to_mat4(COLLADAFW::Transformation *tm, float m[][4])
{
    COLLADABU::Math::Vector3& s = ((COLLADAFW::Scale*)tm)->getScale();
    float size[3] = {(float)s[0], (float)s[1], (float)s[2]};
    size_to_mat4(m, size);
}

void TransformReader::dae_matrix_to_mat4(COLLADAFW::Transformation *tm, float m[][4])
{
    unit_converter->dae_matrix_to_mat4_(m, ((COLLADAFW::Matrix*)tm)->getMatrix());
}

void TransformReader::dae_translate_to_v3(COLLADAFW::Transformation *tm, float v[3])
{
    dae_vector3_to_v3(((COLLADAFW::Translate*)tm)->getTranslation(), v);
}

void TransformReader::dae_scale_to_v3(COLLADAFW::Transformation *tm, float v[3])
{
    dae_vector3_to_v3(((COLLADAFW::Scale*)tm)->getScale(), v);
}

void TransformReader::dae_vector3_to_v3(const COLLADABU::Math::Vector3 &v3, float v[3])
{
    v[0] = v3.x;
    v[1] = v3.y;
    v[2] = v3.z;
}