model.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef STARK_MODEL_MODEL_H
#define STARK_MODEL_MODEL_H

#include "common/array.h"
#include "common/str.h"

#include "math/ray.h"
#include "math/vector3d.h"

namespace Stark {

namespace Gfx {
class TextureSet;
}

class ArchiveReadStream;

class VertNode {
public:
    Math::Vector3d _pos1, _pos2;
    Math::Vector3d _normal;
    float _texS, _texT;
    uint32 _bone1, _bone2;
    float _boneWeight;
};

struct Face {
    uint32 materialId;
    Common::Array<uint32> vertexIndices;

    Face() : materialId(0) {}
};

struct Material {
    Common::String name;
    Common::String texture;
    float r, g, b;
    bool doubleSided;

    Material() : r(0), g(0), b(0), doubleSided(false) {};
};

class BoneNode {
public:
    BoneNode() : _parent(-1), _idx(0), _u1(0) {}
    ~BoneNode() { }

    bool intersectRay(const Math::Ray &ray) const;

    void expandModelSpaceBB(Math::AABB &aabb) const;

    Common::String _name;
    float _u1;
    Common::Array<uint32> _children;
    int _parent;
    uint32 _idx;

    Math::Vector3d _animPos;
    Math::Quaternion _animRot;

    Math::AABB _boundingBox;
};

class Model {
public:
    Model();
    ~Model();

    void readFromStream(ArchiveReadStream *stream);

    const Common::Array<VertNode *> &getVertices() const { return _vertices; }
    const Common::Array<Face *> &getFaces() const { return _faces; }
    const Common::Array<Material *> &getMaterials() const { return _materials; }
    const Common::Array<BoneNode *> &getBones() const { return _bones; };

    bool intersectRay(const Math::Ray &ray) const;

    void updateBoundingBox();

    Math::AABB getBoundingBox() const;

private:
    void buildBonesBoundingBoxes();
    void buildBoneBoundingBox(BoneNode *bone) const;
    void readBones(ArchiveReadStream *stream);

    Common::String _name;
    uint32 _u1;
    float _u2;

    Common::Array<VertNode *> _vertices;
    Common::Array<Material *> _materials;
    Common::Array<Face *> _faces;
    Common::Array<BoneNode *> _bones;
    Math::AABB _boundingBox;
};

} // End of namespace Stark

#endif // STARK_MODEL_MODEL_H