/usr/include/oglappth/ogl_lights.h is in liboglappth-dev 1.0.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 | // OGL_LIGHTS.H : the OpenGL light classes.
// Copyright (C) 1998 Tommi Hassinen.
// This package 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 package 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 package; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
/*################################################################################################*/
//#include "config.h"
#ifndef OGL_LIGHTS_H
#define OGL_LIGHTS_H
/*################################################################################################*/
class ogl_light;
class ogl_spot_light;
class ogl_directional_light;
#include "ogl_objects.h"
#include "base_wnd.h"
/*################################################################################################*/
struct ogl_light_components
{
GLfloat * amb_comp;
GLfloat * diff_comp;
GLfloat * spec_comp;
};
/** The "##light" class is a base class for OpenGL lights. All lights must be
dummy_objects, because they are connected to a camera rather than to a set of
windows. That's because cameras will drag their local lights along when they
are rotated/translated...
Also there is no need for lights to respond to any connectivity/geometry changes.
*/
class ogl_light :
public ogl_light_components,
public ogl_dummy_object
{
public:
/** This should be either NULL (for a global light) or some valid camera of
the model (for a local light). Only model::Add???Light()-functions are allowed
to make modifications to "##owner" !!!
*/
ogl_camera * owner;
/** This is the OpenGL light number GL_LIGHTi for this light. The actual values
are determined in the model when adding/removing local/global lights...
*/
GLint number;
static const GLfloat def_amb_comp[4];
static const GLfloat def_diff_comp[4];
static const GLfloat def_spec_comp[4];
static const ogl_light_components def_components;
public:
ogl_light(const ogl_object_location &, const ogl_light_components &);
virtual ~ogl_light(void);
/** This is used to set up those light properties that are independent on
location/orientation -> should be called for every window when it's created
and always when the light numbering is changed.
*/
virtual void SetupProperties(void) = 0;
/** This should be called for all active lights always when rendering them,
after the modelview-matrix is ready but before any actual rendering commands.
*/
virtual void SetupLocation(void) = 0;
bool BeginTransformation(void) { return false; } // virtual
bool EndTransformation(void) { return false; } // virtual
private:
void InitComponents(const ogl_light_components *);
};
/*################################################################################################*/
/** The OpenGL spotlight (a light source at finite distance, like a flashlight or a candle).
It has the standard cutoff/exponent-properties, and will be rendered as a sphere/cone...
*/
class ogl_spot_light :
public ogl_light
{
public:
GLfloat cutoff;
GLfloat exponent;
static GLfloat size;
static GLfloat shade1[3];
static GLfloat shade2[3];
static GLfloat bulb_on[3];
static GLfloat bulb_off[3];
static const GLfloat def_cutoff;
static const GLfloat def_exponent;
public:
ogl_spot_light(const ogl_object_location &, const ogl_light_components & = ogl_light::def_components, GLfloat = ogl_spot_light::def_cutoff, GLfloat = ogl_spot_light::def_exponent);
virtual ~ogl_spot_light(void);
const char * GetObjectName(void) { return "light (spotlight)"; } // virtual
void SetupProperties(void); // virtual
void SetupLocation(void); // virtual
void Render(void) { } // virtual
};
/*################################################################################################*/
/** The OpenGL directional light (a light source at infinite distance, like the sunlight).
No rendering for this one...
*/
class ogl_directional_light :
public ogl_light
{
protected:
public:
ogl_directional_light(const ogl_object_location &, const ogl_light_components & = ogl_light::def_components);
virtual ~ogl_directional_light(void);
const char * GetObjectName(void) { return "light (directional)"; } // virtual
void SetupProperties(void); // virtual
void SetupLocation(void); // virtual
void Render(void) { } // virtual
};
/*################################################################################################*/
#endif // OGL_LIGHTS_H
// eof
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