added 3dengfx into the repo, probably not the correct version for this

[summerhack] / src / 3dengfx / src / 3dengfx / light.hpp

diff --git a/src/3dengfx/src/3dengfx/light.hpp b/src/3dengfx/src/3dengfx/light.hpp
new file mode 100644 (file)
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--- /dev/null
+++ b/src/3dengfx/src/3dengfx/light.hpp
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+/*
+Copyright 2004 John Tsiombikas <nuclear@siggraph.org>
+
+This file is part of the 3dengfx, realtime visualization system.
+
+3dengfx 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.
+
+3dengfx 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 3dengfx; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+#ifndef _LIGHT_HPP_
+#define _LIGHT_HPP_
+
+#include <string>
+#include "n3dmath2/n3dmath2.hpp"
+#include "gfx/animation.hpp"
+#include "gfx/color.hpp"
+
+#define LIGHTCOL_AMBIENT       1
+#define LIGHTCOL_DIFFUSE       2
+#define LIGHTCOL_SPECULAR      4
+
+// abstract base class Light
+class Light : public XFormNode {
+protected:
+       Color ambient_color, diffuse_color, specular_color;
+       scalar_t intensity;
+       scalar_t attenuation[3];
+       bool cast_shadows;
+
+public:
+       Light();
+       virtual ~Light();
+       
+       virtual void set_color(const Color &c, unsigned short color_flags = 0);
+       virtual void set_color(const Color &amb, const Color &diff, const Color &spec);
+       virtual Color get_color(unsigned short which) const;
+       
+       virtual void set_intensity(scalar_t intensity);
+       virtual scalar_t get_intensity() const;
+       
+       virtual void set_attenuation(scalar_t att0, scalar_t att1, scalar_t att2);
+       virtual scalar_t get_attenuation(int which) const;
+       virtual Vector3 get_attenuation_vector() const;
+
+       virtual void set_shadow_casting(bool shd);
+       virtual bool casts_shadows() const;
+       
+       virtual void set_gl_light(int n, unsigned long time = XFORM_LOCAL_PRS) const = 0;
+};
+
+
+class PointLight : public Light {
+public:
+       PointLight(const Vector3 &pos=Vector3(0,0,0), const Color &col=Color(1.0f, 1.0f, 1.0f));
+       virtual ~PointLight();
+
+       virtual void set_gl_light(int n, unsigned long time = XFORM_LOCAL_PRS) const;
+};
+
+class DirLight : public Light {
+private:
+       Vector3 dir;    // actually get rid of this and work with the PRS directly?
+
+public:
+       DirLight(const Vector3 &dir=Vector3(0, 0, 1), const Color &col=Color(1.0f, 1.0f, 1.0f));
+       virtual ~DirLight();
+
+       Vector3 get_direction();
+       
+       virtual void set_gl_light(int n, unsigned long time = XFORM_LOCAL_PRS) const;
+};
+
+#endif // _LIGHT_HPP_