nuclear@0: /*
nuclear@0: Simple introductory ray tracer
nuclear@0: Copyright (C) 2012  John Tsiombikas <nuclear@member.fsf.org>
nuclear@0: 
nuclear@0: This program is free software: you can redistribute it and/or modify
nuclear@0: it under the terms of the GNU General Public License as published by
nuclear@0: the Free Software Foundation, either version 3 of the License, or
nuclear@0: (at your option) any later version.
nuclear@0: 
nuclear@0: This program is distributed in the hope that it will be useful,
nuclear@0: but WITHOUT ANY WARRANTY; without even the implied warranty of
nuclear@0: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
nuclear@0: GNU General Public License for more details.
nuclear@0: 
nuclear@0: You should have received a copy of the GNU General Public License
nuclear@0: along with this program.  If not, see <http://www.gnu.org/licenses/>.
nuclear@0: */
nuclear@0: #ifndef OBJECT_H_
nuclear@0: #define OBJECT_H_
nuclear@0: 
nuclear@0: #include "vmath/vmath.h"
nuclear@0: #include "material.h"
nuclear@0: #include "xform_node.h"
nuclear@0: 
nuclear@0: struct HitPoint;
nuclear@0: 
nuclear@0: class Object : public XFormNode {
nuclear@0: public:
nuclear@0: 	Matrix4x4 xform, inv_xform, dir_xform;
nuclear@0: 
nuclear@0: 	Material material;		// surface material properties
nuclear@0: 
nuclear@0: 	virtual ~Object() {}
nuclear@0: 
nuclear@0: 	virtual void prepare_xform(long msec);
nuclear@0: 
nuclear@0: 	virtual bool intersect(const Ray &ray, HitPoint *pt) const = 0;
nuclear@0: };
nuclear@0: 
nuclear@0: struct HitPoint {
nuclear@0: 	float dist;       // parametric distance of intersection along the ray
nuclear@0: 	Vector3 pos;       // world position of the intersection point
nuclear@0: 	Vector3 normal;    // surface normal vector at the intersection point
nuclear@0: 	Vector2 texcoord;  // texture coordinates at the intersection point
nuclear@0: 	const Object *obj; // pointer to the intersected object
nuclear@0: };
nuclear@0: 
nuclear@0: #endif	// OBJECT_H_