Dogcows Code - chaz/yoink/blob - src/Moof/Camera.cc

   1
   2 /*******************************************************************************
   3
   4  Copyright (c) 2009, Charles McGarvey
   5  All rights reserved.
   6
   7  Redistribution   and   use  in  source  and  binary  forms,  with  or  without
   8  modification, are permitted provided that the following conditions are met:
   9
  10    * Redistributions  of  source  code  must retain the above copyright notice,
  11      this list of conditions and the following disclaimer.
  12    * Redistributions  in binary form must reproduce the above copyright notice,
  13      this  list of conditions and the following disclaimer in the documentation
  14      and/or other materials provided with the distribution.
  15
  16  THIS  SOFTWARE  IS  PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  17  AND  ANY  EXPRESS  OR  IMPLIED  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  19  DISCLAIMED.  IN  NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  20  FOR  ANY  DIRECT,  INDIRECT,  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  DAMAGES  (INCLUDING,  BUT  NOT  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  22  SERVICES;  LOSS  OF  USE,  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  23  CAUSED  AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  24  OR  TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  25  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26
  27 *******************************************************************************/
  28
  29 #include "Camera.hh"
  30 #include "OpenGL.hh"
  31
  32
  33 namespace Mf {
  34
  35
  36 void Camera::setPosition(const Vector3& point)
  37 {
  38         position_ = point;
  39         calculateSecondary();
  40         //Vector3 coeff[2] = {position_, point};
  41         //pInterp_.init(coeff, 0.1);
  42 }
  43 void Camera::setRotation(const Quaternion& rotation)
  44 {
  45         rotation_ = rotation;
  46 }
  47
  48
  49 void Camera::setProjection(const Matrix4& projection)
  50 {
  51         projection_ = projection;
  52 }
  53
  54 void Camera::setProjection(Scalar fovy, Scalar aspect, Scalar abutting,
  55                 Scalar distant)
  56 {
  57         cml::matrix_perspective_yfov_RH(projection_, fovy, aspect, abutting,
  58                         distant, cml::z_clip_neg_one);
  59         calculateSecondary();
  60 }
  61
  62
  63 void Camera::uploadProjectionToGL() const
  64 {
  65         glMatrixMode(GL_PROJECTION);
  66         glLoadMatrix(projection_.data());
  67
  68         glMatrixMode(GL_MODELVIEW);
  69 }
  70
  71 void Camera::update(Scalar t, Scalar dt)
  72 {
  73         //pInterp_.update(dt);
  74         //position_ = pInterp_.getState(0.0);
  75
  76         //calculateSecondary();
  77 }
  78
  79
  80 void Camera::lookAt(const Vector3& point)
  81 {
  82         cml::quaternion_rotation_aim_at(rotation_, position_, point,
  83                         Vector3(0.0, -1.0, 0.0));
  84         calculateSecondary();
  85 }
  86
  87 void Camera::handleEvent(const Event& event)
  88 {
  89         switch (event.type)
  90         {
  91                 case SDL_KEYDOWN:
  92                         if (event.key.keysym.sym == SDLK_RIGHT)
  93                         {
  94                                 Vector3 vec = position_;
  95                                 vec[0] -= 50.0;
  96                                 setPosition(vec);
  97                         }
  98                         else if (event.key.keysym.sym == SDLK_LEFT)
  99                         {
 100                                 Vector3 vec = position_;
 101                                 vec[0] += 50.0;
 102                                 setPosition(vec);
 103                         }
 104                         else if (event.key.keysym.sym == SDLK_UP)
 105                         {
 106                                 Vector3 vec = position_;
 107                                 vec[1] -= 50.0;
 108                                 setPosition(vec);
 109                         }
 110                         else if (event.key.keysym.sym == SDLK_DOWN)
 111                         {
 112                                 Vector3 vec = position_;
 113                                 vec[1] += 50.0;
 114                                 setPosition(vec);
 115                         }
 116                         else if (event.key.keysym.sym == SDLK_PAGEUP)
 117                         {
 118                                 Vector3 vec = position_;
 119                                 vec[2] += 50.0;
 120                                 setPosition(vec);
 121                         }
 122                         else if (event.key.keysym.sym == SDLK_PAGEDOWN)
 123                         {
 124                                 Vector3 vec = position_;
 125                                 vec[2] -= 50.0;
 126                                 setPosition(vec);
 127                         }
 128                         break;
 129
 130                 case SDL_MOUSEMOTION:
 131                         {
 132                         Scalar xrel = cml::rad(Scalar(event.motion.xrel) / 5.0);
 133                         Scalar yrel = cml::rad(Scalar(event.motion.yrel) / 5.0);
 134
 135                         Quaternion rotation = rotation_;
 136
 137                         cml::quaternion_rotate_about_world_x(rotation, yrel);
 138                         //rotation_.normalize();
 139                         cml::quaternion_rotate_about_world_y(rotation, xrel);
 140                         rotation.normalize();
 141
 142                         setRotation(rotation);
 143                         break;
 144                         }
 145
 146                 case SDL_MOUSEBUTTONDOWN:
 147                         if (event.button.button == SDL_BUTTON_WHEELUP)
 148                         {
 149                                 Vector3 vec = position_;
 150                                 vec[2] += 50.0;
 151                                 setPosition(vec);
 152                         }
 153                         else if (event.button.button == SDL_BUTTON_WHEELDOWN)
 154                         {
 155                                 Vector3 vec = position_;
 156                                 vec[2] -= 50.0;
 157                                 setPosition(vec);
 158                         }
 159                         break;
 160         }
 161
 162         calculateSecondary();
 163 }
 164
 165 void Camera::calculateSecondary()
 166 {
 167         cml::matrix_rotation_quaternion(modelview_, rotation_);
 168
 169         Matrix4 translate;
 170         cml::matrix_translation(translate, position_);
 171
 172         //modelview_.transpose();
 173         modelview_ *= translate;
 174         //modelview_ = translate * modelview_;
 175
 176         frustum_.init(modelview_, projection_);
 177 }
 178
 179
 180 } // namespace Mf
 181
 182 /** vim: set ts=4 sw=4 tw=80: *************************************************/
 183