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source: orxonox.OLD/trunk/src/world_entities/weather_effects/lense_flare.cc @ 10351

Last change on this file since 10351 was 10114, checked in by patrick, 18 years ago

merged network back to trunk

File size: 5.7 KB
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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 "lense_flare.h"
20
21#include "util/loading/load_param.h"
22#include "util/loading/factory.h"
23
24#include "glincl.h"
25#include "texture.h"
26
27#include "light.h"
28#include "state.h"
29#include "debug.h"
30
31#include "render2D/image_plane.h"
32
33#include "light.h"
34#include "camera.h"
35
36
37
38ObjectListDefinition(LenseFlare);
39CREATE_FACTORY(LenseFlare);
40
41/**
42 * @brief default constructor
43 * @param root The XML-element to load the LenseFlare from
44 */
45LenseFlare::LenseFlare(const TiXmlElement* root) {
46  this->registerObject(this, LenseFlare::_objectList);
47
48    /*          length                      image scale */
49    this->flareMatrix[0] = 1.0f;
50    this->flareMatrix[1] = 1.0f;
51    this->flareMatrix[2] = 0.5f;
52    this->flareMatrix[3] = 0.5f;
53    this->flareMatrix[4] = 0.33f;
54    this->flareMatrix[5] = 0.25f;
55    this->flareMatrix[6] = 0.125f;
56    this->flareMatrix[7] = 1.0f;
57    this->flareMatrix[8] = -0.5f;
58    this->flareMatrix[9] = 0.5f;
59    this->flareMatrix[10] = -0.25f;
60    this->flareMatrix[11] = 0.15f;
61    this->flareMatrix[12] = -1.82f;
62    this->flareMatrix[13] = 0.25f;
63
64    this->lightSource = (LightManager::getInstance())->getLight(0);
65    PRINTF(4)("light is: %p\n", this->lightSource);
66
67    if (root != NULL) {
68        this->loadParams(root);
69        this->activate();
70    }
71
72    this->bVisible = true;
73    this->setSourceVisibility(false);
74
75}
76
77
78/**
79 *  destroys a LenseFlare
80 */
81LenseFlare::~LenseFlare() {
82    std::vector<ImagePlane*>::iterator it;
83    for( it = flares.begin(); it != flares.end(); it++)
84        delete (*it);
85}
86
87
88/**
89 * @param root The XML-element to load the LenseFlare from
90 */
91void LenseFlare::loadParams(const TiXmlElement* root) {
92    GraphicsEffect::loadParams(root);
93
94    LOAD_PARAM_START_CYCLE(root, element);
95    {
96        LoadParam_CYCLE(element, "add-flare-texture", this, LenseFlare, addFlare)
97        .describe("adds a lensflare texture to the engine");
98    }
99    LOAD_PARAM_END_CYCLE(element);
100}
101
102
103/**
104 * initializes the fog effect
105 */
106void LenseFlare::init() {}
107
108
109/**
110 * activates the fog effect
111 */
112void LenseFlare::activate() {
113    this->bActivated = true;
114}
115
116
117/**
118 * deactivates the fog effect
119 */
120void LenseFlare::deactivate() {
121    this->bActivated = false;
122}
123
124
125/**
126 * @brief converts a gl mode char to a GLint
127 * @param mode the mode character
128 */
129GLint LenseFlare::stringToFogMode(const std::string& mode) {
130    return 0;
131}
132
133
134/**
135 * @brief adds a texture flare
136 * @param textureName the name of the flare texture
137 *
138 *  1st: Texture of the Sun/Light source itself
139 *  2nd: Texture of the fist halo
140 *  3rd: Texture of small burst
141 *  4th: Texture of the second halo
142 *  5th: Texutre of the second burst
143 *  6th: Texture of the third halo
144 *  7th: Texture of the third burst
145 */
146void LenseFlare::addFlare(const std::string& textureName) {
147    if( this->flares.size() > LF_MAX_FLARES) {
148        PRINTF(2)("You tried to add more than %i lense flares, ignoring\n", LF_MAX_FLARES);
149        return;
150    }
151
152    ImagePlane* bb = new ImagePlane(NULL);
153    if (this->flares.empty())
154        bb->setLayer(E2D_LAYER_BELOW_ALL);
155    bb->setTexture(textureName);
156    bb->setSize(50, 50);
157    this->flares.push_back(bb);
158    bb->setVisibility(true);
159
160    PRINTF(4)("Added a Lenseflare ImagePlane with texture %s\n", textureName.c_str());
161
162    // the first flare belongs to the light source
163    if( this->flares.size() == 1 && this->lightSource != NULL) {
164        bb->setBindNode(static_cast<PNode*>(this->lightSource));
165    }
166
167    PRINTF(4)("Finished adding\n");
168}
169
170
171void LenseFlare::setSourceVisibility(bool visibility) {
172    if (this->bVisible == visibility)
173        return;
174
175    std::vector<ImagePlane*>::const_iterator it;
176    for(it = ++flares.begin(); it != flares.end(); it++)
177        (*it)->setVisibility(visibility);
178    this->bVisible = visibility;
179}
180
181
182/**
183 * tick the effect
184 */
185void LenseFlare::tick(float dt) {
186    if( unlikely(!this->bActivated || this->flares.size() == 0))
187        return;
188
189    // refetch light source information if needed
190    if( unlikely( this->lightSource == NULL)) {
191        this->lightSource = (LightManager::getInstance())->getLight(0);
192        if( this->flares.size() > 0)
193            this->flares[0]->setBindNode(static_cast<PNode*>(this->lightSource));
194    }
195
196    //set the frustum plane
197    if (!flares.empty())
198        this->setSourceVisibility(this->flares[0]->isVisible());
199
200
201    // always update the screen center, it could be, that the window is resized
202    this->screenCenter = Vector2D(State::getResX()/2.0f, State::getResY()/2.0f);
203
204    // flare vector is the direction from the center to the light source
205    this->flareVector = this->flares[0]->getAbsCoor2D() - this->screenCenter;
206    this->distance = this->flareVector.len();
207    this->flareVector.normalize();
208
209    // now calculate the new coordinates of the billboards
210    std::vector<ImagePlane*>::iterator it;
211    int i;
212    for( it = flares.begin(), i = 0; it != flares.end(); it++, i++) {
213        // set the new position
214        if( i == 0)
215            continue;
216
217        (*it)->setAbsCoor2D( this->screenCenter + this->flareVector * this->flareMatrix[i * 2] * this->distance);
218        (*it)->setSize2D(50.0f * this->flareMatrix[i * 2 + 1], 50.0f * this->flareMatrix[i * 2 + 1]);
219        PRINTF(5)("Tick flare %i @ (%f, %f)\n", i, (*it)->getAbsCoor2D().x, (*it)->getAbsCoor2D().y);
220    }
221}
222
223
224/**
225 * draws the LenseFlares
226 */
227void LenseFlare::draw() const {
228    if( !this->bActivated)
229        return;
230}
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