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engines/stark/model/model.h

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+/* 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() { }
+
+	/** Perform a collision test with the ray */
+	bool intersectRay(const Math::Ray &ray) const;
+
+	/** Expand a bounding box with the model space BB of this bone */
+	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;
+
+	/** Bone space bounding box */
+	Math::AABB _boundingBox;
+};
+
+/**
+ * A 3D Model
+ */
+class Model {
+public:
+	Model();
+	~Model();
+
+	/**
+	 * Try and initialise object from the specified stream
+	 */
+	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; };
+
+	/** Perform a collision test with a ray */
+	bool intersectRay(const Math::Ray &ray) const;
+
+	/** Update the model bounding box with the current animation state */
+	void updateBoundingBox();
+
+	/** Retrieve the model space bounding box for the current animation state */
+	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