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source: orxonox.OLD/branches/height_map/src/lib/graphics/effects/fog_effect.cc @ 6996

Last change on this file since 6996 was 6815, checked in by bensch, 19 years ago

orxonox/trunk: merged branches/network back to the trunk.
merged with command:
svn merge https://svn.orxonox.net/orxonox/branches/network . -r6774:HEAD

no conflicts…
thats what i call orthogonal work

File size: 2.7 KB
Line 
1
2
3/*
4   orxonox - the future of 3D-vertical-scrollers
5
6   Copyright (C) 2004 orx
7
8   This program is free software; you can redistribute it and/or modify
9   it under the terms of the GNU General Public License as published by
10   the Free Software Foundation; either version 2, or (at your option)
11   any later version.
12
13### File Specific:
14   main-programmer: Patrick Boenzli
15*/
16
17#define DEBUG_SPECIAL_MODULE DEBUG_MODULE_GRAPHICS
18
19#include "fog_effect.h"
20
21#include "load_param.h"
22#include "factory.h"
23
24#include "glincl.h"
25
26
27
28using namespace std;
29
30CREATE_FACTORY(FogEffect, CL_FOG_EFFECT);
31
32
33
34/**
35 *  default constructor
36 * @param root The XML-element to load the FogEffect from
37 */
38 FogEffect::FogEffect(const TiXmlElement* root)
39{
40
41  this->fogMode = GL_EXP2;
42  this->fogDensity = 0.001f;
43  this->fogStart = 10.0f;
44  this->fogEnd = 1000.0f;
45
46
47  if (root != NULL)
48    this->loadParams(root);
49}
50
51
52/**
53 *  destroys a FogEffect
54 */
55FogEffect::~FogEffect()
56{}
57
58
59/**
60 * @param root The XML-element to load the FogEffect from
61 */
62void FogEffect::loadParams(const TiXmlElement* root)
63{
64  printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>.loadParms\n\n");
65  GraphicsEffect::loadParams(root);
66
67   LoadParam(root, "fog-mode", this, FogEffect, setFogMode)
68       .describe("sets the the fog mode {GL_LINEAR, GL_EXP, GL_EXP2}");
69
70   LoadParam(root, "fog-density", this, FogEffect, setFogDensity)
71       .describe("sets the the fog density of the exponentionl functions");
72
73   LoadParam(root, "fog-range", this, FogEffect, setFogRange)
74       .describe("sets the the range of the linear functions");
75}
76
77
78/**
79 * initializes the fog effect
80 */
81bool FogEffect::init()
82{}
83
84
85/**
86 * activates the fog effect
87 */
88bool FogEffect::activate()
89{
90  printf("fog==============================================>>>>>>>>>>>>>>>>>>>>>>>>...\n\n");
91  PRINTF(4)( "Enabling Fog Effect, mode: %i, density: %f, start: %f, end: %f\n", this->fogMode, this->fogDensity,
92             this->fogStart, this->fogEnd);
93
94  glEnable(GL_FOG);
95  {
96    GLfloat fogColor[4] = {0.6, 0.6, 0.6, 1.0};
97
98    glFogi(GL_FOG_MODE, this->fogMode);
99    glFogfv(GL_FOG_COLOR, fogColor);
100    glFogf(GL_FOG_DENSITY, this->fogDensity);
101    glHint(GL_FOG_HINT, GL_DONT_CARE);
102    glFogf(GL_FOG_START, this->fogStart);
103    glFogf(GL_FOG_END, this->fogEnd);
104
105    //glFogi(GL_FOG_COORDINATE_SOURCE, GL_FOG_COORDINATE);
106  }
107  glClearColor(0.5, 0.5, 0.5, 1.0);
108}
109
110
111/**
112 * deactivates the fog effect
113 */
114bool FogEffect::deactivate()
115{
116  glDisable(GL_FOG);
117}
118
119
120/**
121 * converts a gl mode char to a GLint
122 * @param mode the mode character
123 */
124GLint FogEffect::charToFogMode(const char* mode)
125{
126  if( !strcmp( "GL_LINEAR", mode))
127    return GL_LINEAR;
128  else if( !strcmp("GL_EXP", mode))
129    return GL_EXP;
130  else if(!strcmp("GL_EXP2", mode) )
131    return GL_EXP2;
132  else
133    return -1;
134}
135
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