Line data    Source code

       1             : 
       2             : /* Copyright (c) 2011-2013, Stefan Eilemann <eile@eyescale.ch>
       3             :  *
       4             :  * This library is free software; you can redistribute it and/or modify it under
       5             :  * the terms of the GNU Lesser General Public License version 2.1 as published
       6             :  * by the Free Software Foundation.
       7             :  *
       8             :  * This library is distributed in the hope that it will be useful, but WITHOUT
       9             :  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
      10             :  * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
      11             :  * details.
      12             :  *
      13             :  * You should have received a copy of the GNU Lesser General Public License
      14             :  * along with this library; if not, write to the Free Software Foundation, Inc.,
      15             :  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
      16             :  */
      17             : 
      18             : #include "renderer.h"
      19             : 
      20             : #include "application.h"
      21             : #include "viewData.h"
      22             : #include "detail/renderer.h"
      23             : 
      24             : namespace seq
      25             : {
      26           2 : Renderer::Renderer( Application& application )
      27           2 :     : _impl( new detail::Renderer )
      28           4 :     , app_( application )
      29             : {
      30           2 : }
      31             : 
      32           4 : Renderer::~Renderer()
      33             : {
      34           2 :     delete _impl;
      35           2 : }
      36             : 
      37           4 : co::Object* Renderer::getFrameData()
      38             : {
      39           4 :     return _impl->getFrameData();
      40             : }
      41             : 
      42           0 : const GLEWContext* Renderer::glewGetContext() const
      43             : {
      44           0 :     return _impl->glewGetContext();
      45             : }
      46             : 
      47           1 : ViewData* Renderer::createViewData()
      48             : {
      49           1 :     return new ViewData;
      50             : }
      51             : 
      52           1 : void Renderer::destroyViewData( ViewData* viewData )
      53             : {
      54           1 :     delete viewData;
      55           1 : }
      56             : 
      57           0 : const Frustumf& Renderer::getFrustum() const
      58             : {
      59           0 :     return _impl->getFrustum();
      60             : }
      61             : 
      62           0 : const Matrix4f& Renderer::getViewMatrix() const
      63             : {
      64           0 :     return _impl->getViewMatrix();
      65             : }
      66             : 
      67           0 : const Matrix4f& Renderer::getModelMatrix() const
      68             : {
      69           0 :     return _impl->getModelMatrix();
      70             : }
      71             : 
      72           2 : bool Renderer::initContext( co::Object* /*initData*/ )
      73             : {
      74           2 :     return _impl->initContext();
      75             : }
      76             : 
      77           2 : bool Renderer::exitContext()
      78             : {
      79           2 :     return _impl->exitContext();
      80             : }
      81             : 
      82           3 : void Renderer::clear( co::Object* /*frameData*/ )
      83             : {
      84           3 :     _impl->clear();
      85           3 : }
      86             : 
      87           0 : void Renderer::updateNearFar( const Vector4f& boundingSphere )
      88             : {
      89           0 :     const Matrix4f& view = getViewMatrix();
      90           0 :     Matrix4f viewInv;
      91           0 :     compute_inverse( view, viewInv );
      92             : 
      93           0 :     const Vector3f& zero  = viewInv * Vector3f::ZERO;
      94           0 :     Vector3f        front = viewInv * Vector3f( 0.0f, 0.0f, -1.0f );
      95           0 :     front -= zero;
      96           0 :     front.normalize();
      97           0 :     front *= boundingSphere.w();
      98             : 
      99           0 :     const Vector3f& translation = getModelMatrix().get_translation();
     100           0 :     const Vector3f& center = translation - boundingSphere.get_sub_vector< 3 >();
     101           0 :     const Vector3f& nearPoint  = view * ( center - front );
     102           0 :     const Vector3f& farPoint   = view * ( center + front );
     103             : 
     104           0 :     if( _impl->useOrtho( ))
     105             :     {
     106           0 :         LBASSERTINFO( fabs( farPoint.z() - nearPoint.z() ) >
     107             :                       std::numeric_limits< float >::epsilon(),
     108             :                       nearPoint << " == " << farPoint );
     109           0 :         setNearFar( -nearPoint.z(), -farPoint.z() );
     110             :     }
     111             :     else
     112             :     {
     113             :         // estimate minimal value of near plane based on frustum size
     114           0 :         const eq::Frustumf& frustum = _impl->getFrustum();
     115           0 :         const float width  = fabs( frustum.right() - frustum.left() );
     116           0 :         const float height = fabs( frustum.top() - frustum.bottom() );
     117           0 :         const float size   = LB_MIN( width, height );
     118           0 :         const float minNear = frustum.near_plane() / size * .001f;
     119             : 
     120           0 :         const float zNear = LB_MAX( minNear, -nearPoint.z() );
     121           0 :         const float zFar  = LB_MAX( zNear * 2.f, -farPoint.z() );
     122             : 
     123           0 :         setNearFar( zNear, zFar );
     124             :     }
     125           0 : }
     126             : 
     127           0 : void Renderer::setNearFar( const float nearPlane, const float farPlane )
     128             : {
     129           0 :     _impl->setNearFar( nearPlane, farPlane );
     130           0 : }
     131             : 
     132           0 : void Renderer::applyRenderContext()
     133             : {
     134           0 :     _impl->applyRenderContext();
     135           0 : }
     136             : 
     137           0 : const RenderContext& Renderer::getRenderContext() const
     138             : {
     139           0 :     return _impl->getRenderContext();
     140             : }
     141             : 
     142           0 : void Renderer::applyModelMatrix()
     143             : {
     144           0 :     _impl->applyModelMatrix();
     145           0 : }
     146             : 
     147           0 : co::Object* Renderer::createObject( const uint32_t type )
     148             : {
     149           0 :     return app_.createObject( type );
     150             : }
     151             : 
     152           0 : void Renderer::destroyObject( co::Object* object, const uint32_t type )
     153             : {
     154           0 :     app_.destroyObject( object, type );
     155           0 : }
     156           3 : }