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annotate engine/core/view/rendererbase.h @ 684:4f36c890b1dd

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* Merged the 0.3.3dev branche changes to the trunk.
author helios2000@33b003aa-7bff-0310-803a-e67f0ece8222
date Mon, 06 Dec 2010 19:25:27 +0000
parents 16c2b3ee59ce
children
rev   line source
0
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1 /***************************************************************************
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2 * Copyright (C) 2005-2008 by the FIFE team *
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3 * http://www.fifengine.de *
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4 * This file is part of FIFE. *
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5 * *
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6 * FIFE is free software; you can redistribute it and/or *
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7 * modify it under the terms of the GNU Lesser General Public *
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8 * License as published by the Free Software Foundation; either *
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9 * version 2.1 of the License, or (at your option) any later version. *
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10 * *
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11 * This library is distributed in the hope that it will be useful, *
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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14 * Lesser General Public License for more details. *
0
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15 * *
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16 * You should have received a copy of the GNU Lesser General Public *
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17 * License along with this library; if not, write to the *
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18 * Free Software Foundation, Inc., *
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19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
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20 ***************************************************************************/
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21
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22 #ifndef FIFE_RENDERERBASE_H
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23 #define FIFE_RENDERERBASE_H
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24
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25 // Standard C++ library includes
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26 #include <list>
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44919eb74c40 making header files self-sufficient so they can be compiled in isolation.
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27 #include <vector>
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28
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29 // 3rd party library includes
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30
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31 // FIFE includes
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32 // These includes are split up in two parts, separated by one empty line
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33 // First block: files included from the FIFE root src directory
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34 // Second block: files included from the same folder
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35
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16c2b3ee59ce * Merged the view performance branch back into trunk. fixes[ticket:419]
helios2000@33b003aa-7bff-0310-803a-e67f0ece8222
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36 #include "renderitem.h"
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37
0
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38 namespace FIFE {
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39 class Camera;
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40 class Layer;
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41 class Map;
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42 class Instance;
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43 class RenderBackend;
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44
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45 class RendererBase;
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46 /** RendererListener allows reaction to changes in renderer
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47 * Having this implemented via callback mechanism should speed up the rendering a bit
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48 * (e.g. no need to sort pipeline order per each frame)
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49 */
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50 class IRendererListener {
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51 public:
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52 virtual ~IRendererListener() {}
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53
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54 /** Renderer's pipeline position has been changed
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55 */
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56 virtual void onRendererPipelinePositionChanged(RendererBase* renderer) = 0;
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57
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58 /** Renderer is enabled / disabled
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59 */
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60 virtual void onRendererEnabledChanged(RendererBase* renderer) = 0;
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61 };
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62
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63 /** Interface to class owning the renderers
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64 * Used to get correct subclass of renderer in scripting side (via renderer's static method)
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65 */
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66 class IRendererContainer {
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67 public:
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68 virtual ~IRendererContainer() {}
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69
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70 /** Returns renderer with given name
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71 */
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72 virtual RendererBase* getRenderer(const std::string& renderername) = 0;
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73 };
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74
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75 /** Base class for all view renderers
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76 * View renderer renders one aspect of the view shown on screen
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77 */
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78 class RendererBase {
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79 public:
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80 /** Constructor
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81 * @param renderbackend to use
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82 * @param position position for this renderer in rendering pipeline
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83 */
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84 RendererBase(RenderBackend* renderbackend, int position);
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85
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86 /** Copy Constructor
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87 */
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88 RendererBase(const RendererBase& old);
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89
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90 /** Makes copy of this renderer
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91 */
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92 virtual RendererBase* clone() = 0;
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93
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94 /** Destructor
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95 */
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96 virtual ~RendererBase() {};
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97
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98 /** This method is called by the view to ask renderer to draw its rendering aspect based on
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99 * given parameters. Renderers receive non-clipped instance stack since there is no
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100 * way to know which information is relevant for the renderer. E.g. effect renderer
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101 * might need to know offscreen instance locations to be able to draw radiation coming from
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102 * some instance not visible on the screen.
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103 *
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104 * @param cam camera view to draw
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105 * @param layer current layer to be rendered
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106 * @param instances instances on the current layer
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107 * @ see setPipelinePosition
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108 */
482
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109 virtual void render(Camera* cam, Layer* layer, RenderList& instances) = 0;
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110
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111 /** Name of the renderer
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112 */
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113 virtual std::string getName() = 0;
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114
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115 /** Gets renderer position in the rendering pipeline
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116 */
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117 int getPipelinePosition() const { return m_pipeline_position; }
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118
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119 /** Sets renderer position in the rendering pipeline
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120 * Pipeline position defines in which order view calls the renderers when update occurs
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121 * Note that renderers are called once per rendered layer, thus to update the
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122 * whole screen, renderer might receive multiple calls
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123 */
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124 void setPipelinePosition(int position);
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125
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126 /** Enables renderer
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127 */
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128 virtual void setEnabled(bool enabled);
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129
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130 /** Resets information in the renderer
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131 */
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132 virtual void reset() {}
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133
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134 /** Is renderer enabled
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135 */
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136 bool isEnabled() const { return m_enabled; }
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137
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138 /** Sets listener for renderer
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139 */
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140 void setRendererListener(IRendererListener* listener) { m_listener = listener; }
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141
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142 /** Adds active layer to renderer. Only active layers are rendered
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143 */
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144 void addActiveLayer(Layer* layer);
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145
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146 /** Removes active layer from renderer.
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147 */
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148 void removeActiveLayer(Layer* layer);
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149
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150 /** Clears all active layers from renderer
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151 */
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152 void clearActiveLayers();
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153
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154 /** Activates all layers from given elevation
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155 */
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156 void activateAllLayers(Map* elevation);
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157
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158 /** Returns if given layer is currently activated
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159 */
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160 bool isActivedLayer(Layer* layer);
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f855809822cf * Fixed GenericRenderer, now it only render to a specific layer. If the node is only a point then it used the last active layer. fixes #[ticket:458]
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161
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162 /** Returns list of activated layer
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163 */
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164 std::list<Layer*> getActiveLayers() const {return m_active_layers;}
0
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165
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166
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167 protected:
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168 RendererBase();
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169
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170 std::list<Layer*> m_active_layers;
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171 RenderBackend* m_renderbackend;
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172
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173 private:
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174 bool m_enabled;
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175 int m_pipeline_position;
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176 IRendererListener* m_listener;
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177 };
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178 }
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179
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180 #endif