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source: orxonox.OLD/trunk/src/world_entities/camera.cc @ 9842

Last change on this file since 9842 was 9406, checked in by bensch, 18 years ago

orxonox/trunk: merged the proxy back

merged with commandsvn merge -r9346:HEAD https://svn.orxonox.net/orxonox/branches/proxy .

no conflicts

File size: 5.2 KB
Line 
1/*
2   orxonox - the future of 3D-vertical-scrollers
3
4   Copyright (C) 2004 orx
5
6   This program is free software; you can redistribute it and/or modify
7   it under the terms of the GNU General Public License as published by
8   the Free Software Foundation; either version 2, or (at your option)
9   any later version.
10
11   ### File Specific:
12   main-programmer: Christian Meyer
13   co-programmer: Benjamin Grauer
14*/
15#define DEBUG_SPECIAL_MODULE DEBUG_MODULE_WORLD_ENTITY
16
17#include "camera.h"
18#include "key_mapper.h"
19#include "glincl.h"
20
21/**
22 *  creates a Camera
23*/
24Camera::Camera()
25{
26  this->setClassID(CL_CAMERA, "Camera");
27  this->setName("camera");
28  this->target = new CameraTarget();
29
30  this->subscribeEvent(ES_GAME, KeyMapper::PEV_VIEW0);
31  this->subscribeEvent(ES_GAME, KeyMapper::PEV_VIEW1);
32  this->subscribeEvent(ES_GAME, KeyMapper::PEV_VIEW2);
33  this->subscribeEvent(ES_GAME, KeyMapper::PEV_VIEW3);
34  this->subscribeEvent(ES_GAME, KeyMapper::PEV_VIEW4);
35  this->subscribeEvent(ES_GAME, KeyMapper::PEV_VIEW5);
36
37  this->setFovy(90);
38  this->setAspectRatio(1.2f);
39  this->setClipRegion(.1, 10000);
40
41  this->setViewMode(Camera::ViewNormal);
42
43  this->setParentMode(PNODE_ALL);
44}
45
46/**
47 *  default destructor
48*/
49Camera::~Camera()
50{}
51
52/**
53 *  focuses the Camera onto a Target
54 * @param target the new PNode the Camera should look at.
55*/
56void Camera::lookAt(PNode* target)
57{
58  this->target->setParent(target);
59}
60
61/**
62 * @returns The PNode of the Target (from there you can get position and so on
63*/
64PNode* Camera::getTargetNode() const
65{
66  return (PNode*)this->target;
67}
68
69/**
70 *  sets a new AspectRatio
71 * @param aspectRatio the new aspect ratio to set (width / height)
72*/
73void Camera::setAspectRatio(float aspectRatio)
74{
75  this->aspectRatio = aspectRatio;
76}
77
78/**
79 * Sets a new clipping region
80 * @param nearClip The near clip plane
81 * @param farClip The far clip plane
82*/
83void Camera::setClipRegion(float nearClip, float farClip)
84{
85  this->nearClip = nearClip;
86  this->farClip = farClip;
87}
88
89/**
90 *  sets the new VideoMode and initializes iteration to it.
91 * @param mode the mode to change to.
92*/
93void Camera::setViewMode(ViewMode mode)
94{
95  currentMode = mode;
96  switch (mode)
97  {
98    default:
99    case Camera::ViewNormal:
100      this->toFovy = 60.0;
101      this->setRelCoorSoft(-10, 5, 0);
102      this->target->setRelCoorSoft(0,0,0);
103      break;
104    case Camera::ViewBehind:
105      break;
106    case Camera::ViewFront:
107      this->toFovy = 120.0;
108      this->setRelCoorSoft(4, 0, 0, 5);
109      this->target->setRelCoorSoft(Vector(10,0,0), 5);
110      break;
111    case Camera::ViewLeft:
112      this->toFovy = 90;
113      this->setRelCoorSoft(0, 1, -10, .5);
114      this->target->setRelCoorSoft(0,0,0);
115      break;
116    case Camera::ViewRight:
117      this->toFovy = 90;
118      this->setRelCoorSoft(Vector(0, 1, 10));
119      this->target->setRelCoorSoft(0,0,0);
120      break;
121    case Camera::ViewTop:
122      this->toFovy= 120;
123      this->setRelCoorSoft(Vector(30, 50, 0));
124      this->target->setRelCoorSoft(35,0,0);
125  }
126}
127
128
129/**
130 *  Updates the position of the camera.
131 * @param dt: The time that elapsed.
132*/
133void Camera::tick(float dt)
134{
135  //update frustum plane
136  this->viewVector = (this->target->getAbsCoor() - this->getAbsCoor()).getNormalized();
137  this->frustumPlane = Plane(this->viewVector, this->getAbsCoor() + this->viewVector * 0.1);
138
139  this->upVector =  this->getAbsDirV();
140
141
142  float tmpFovy = (this->toFovy - this->fovy);
143  if (tmpFovy > 0.01)
144    this->fovy += tmpFovy * fabsf(dt);
145}
146
147
148/**
149 *  initialize rendering perspective according to this camera
150 *
151 * This is called immediately before the rendering cycle starts, it sets all global
152 * rendering options as well as the GL_PROJECTION matrix according to the camera.
153 */
154void Camera::apply ()
155{
156  // switching to Projection Matrix
157  glMatrixMode (GL_PROJECTION);
158  glLoadIdentity ();
159
160  gluPerspective(this->fovy,
161                 this->aspectRatio,
162                 this->nearClip,
163                 this->farClip);
164
165
166    // setting up the perspective
167  // speed-up feature
168  glMatrixMode (GL_MODELVIEW);
169  glLoadIdentity();
170
171
172}
173
174void Camera::project()
175{
176  Vector cameraPosition = this->getAbsCoor();
177  Vector targetPosition = this->target->getAbsCoor();
178
179       // Setting the Camera Eye, lookAt and up Vectors
180  gluLookAt(cameraPosition.x, cameraPosition.y, cameraPosition.z,
181            targetPosition.x, targetPosition.y, targetPosition.z,
182            this->upVector.x, this->upVector.y, this->upVector.z);
183}
184
185
186/**
187 *  processes an event
188 * @param event: the event to process
189*/
190void Camera::process(const Event &event)
191{
192  if( event.type == KeyMapper::PEV_VIEW0)
193  {
194    this->setViewMode(Camera::ViewNormal);
195  }
196  else if( event.type == KeyMapper::PEV_VIEW1)
197  {
198    this->setViewMode(Camera::ViewBehind);
199  }
200  else if( event.type == KeyMapper::PEV_VIEW2)
201  {
202    this->setViewMode(Camera::ViewFront);
203  }
204  else if( event.type == KeyMapper::PEV_VIEW3)
205  {
206    this->setViewMode(Camera::ViewLeft);
207  }
208  else if( event.type == KeyMapper::PEV_VIEW4)
209  {
210    this->setViewMode(Camera::ViewRight);
211  }
212  else if( event.type == KeyMapper::PEV_VIEW5)
213  {
214    this->setViewMode(Camera::ViewTop);
215  }
216}
217
218
219///////////////////
220// CAMERA-TARGET //
221///////////////////
222
223
224CameraTarget::CameraTarget()
225{
226  this->setClassID(CL_CAMERA_TARGET, "CameraTarget");
227  //  this->setParentMode(PNODE_MOVEMENT);
228}
229
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