1 | /*
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2 | -----------------------------------------------------------------------------
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3 | This source file is part of OGRE
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4 | (Object-oriented Graphics Rendering Engine)
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5 | For the latest info, see http://www.ogre3d.org/
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6 |
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7 | Copyright (c) 2000-2005 The OGRE Team
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8 | Also see acknowledgements in Readme.html
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9 |
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10 | This program is free software; you can redistribute it and/or modify it under
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11 | the terms of the GNU Lesser General Public License as published by the Free Software
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12 | Foundation; either version 2 of the License, or (at your option) any later
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13 | version.
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14 |
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15 | This program is distributed in the hope that it will be useful, but WITHOUT
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16 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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17 | FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
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18 |
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19 | You should have received a copy of the GNU Lesser General Public License along with
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20 | this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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21 | Place - Suite 330, Boston, MA 02111-1307, USA, or go to
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22 | http://www.gnu.org/copyleft/lesser.txt.
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23 | -----------------------------------------------------------------------------
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24 | */
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25 | #include "OgreStableHeaders.h"
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26 | #include "OgrePredefinedControllers.h"
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27 |
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28 | #include "OgreRoot.h"
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29 | #include "OgreMath.h"
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30 | #include "OgreLogManager.h"
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31 | #include "OgreTextureUnitState.h"
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32 |
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33 | namespace Ogre
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34 | {
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35 | //-----------------------------------------------------------------------
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36 | // FrameTimeControllerValue
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37 | //-----------------------------------------------------------------------
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38 | FrameTimeControllerValue::FrameTimeControllerValue()
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39 | {
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40 | // Register self
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41 | #ifdef GAMETOOLS_ILLUMINATION_MODULE
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42 | this->setPriority(-1000);
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43 | #endif
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44 | Root::getSingleton().addFrameListener(this);
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45 | mFrameTime = 0;
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46 | mTimeFactor = 1;
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47 | mFrameDelay = 0;
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48 | mElapsedTime = 0;
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49 |
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50 | }
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51 | //-----------------------------------------------------------------------
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52 | bool FrameTimeControllerValue::frameStarted(const FrameEvent &evt)
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53 | {
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54 | if(mFrameDelay)
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55 | {
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56 | // Fixed frame time
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57 | mFrameTime = mFrameDelay;
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58 | mTimeFactor = mFrameDelay / evt.timeSinceLastFrame;
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59 | }
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60 | else
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61 | {
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62 | // Save the time value after applying time factor
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63 | mFrameTime = mTimeFactor * evt.timeSinceLastFrame;
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64 | }
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65 | // Accumulate the elapsed time
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66 | mElapsedTime += mFrameTime;
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67 | return true;
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68 | }
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69 | //-----------------------------------------------------------------------
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70 | bool FrameTimeControllerValue::frameEnded(const FrameEvent &evt)
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71 | {
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72 | return true;
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73 | }
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74 | //-----------------------------------------------------------------------
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75 | Real FrameTimeControllerValue::getValue() const
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76 | {
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77 | return mFrameTime;
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78 | }
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79 | //-----------------------------------------------------------------------
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80 | void FrameTimeControllerValue::setValue(Real value)
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81 | {
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82 | // Do nothing - value is set from frame listener
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83 | }
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84 | //-----------------------------------------------------------------------
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85 | Real FrameTimeControllerValue::getTimeFactor(void) const {
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86 | return mTimeFactor;
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87 | }
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88 | //-----------------------------------------------------------------------
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89 | void FrameTimeControllerValue::setTimeFactor(Real tf) {
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90 | if(tf >= 0)
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91 | {
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92 | mTimeFactor = tf;
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93 | mFrameDelay = 0;
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94 | }
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95 | }
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96 | //-----------------------------------------------------------------------
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97 | Real FrameTimeControllerValue::getFrameDelay(void) const {
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98 | return mFrameDelay;
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99 | }
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100 | //-----------------------------------------------------------------------
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101 | void FrameTimeControllerValue::setFrameDelay(Real fd) {
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102 | mTimeFactor = 0;
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103 | mFrameDelay = fd;
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104 | }
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105 | //-----------------------------------------------------------------------
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106 | Real FrameTimeControllerValue::getElapsedTime(void) const
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107 | {
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108 | return mElapsedTime;
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109 | }
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110 | //-----------------------------------------------------------------------
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111 | void FrameTimeControllerValue::setElapsedTime(Real elapsedTime)
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112 | {
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113 | mElapsedTime = elapsedTime;
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114 | }
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115 | //-----------------------------------------------------------------------
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116 | // TextureFrameControllerValue
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117 | //-----------------------------------------------------------------------
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118 | TextureFrameControllerValue::TextureFrameControllerValue(TextureUnitState* t)
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119 | {
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120 | mTextureLayer = t;
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121 | }
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122 | //-----------------------------------------------------------------------
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123 | Real TextureFrameControllerValue::getValue(void) const
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124 | {
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125 | int numFrames = mTextureLayer->getNumFrames();
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126 | return (mTextureLayer->getCurrentFrame() / numFrames);
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127 | }
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128 | //-----------------------------------------------------------------------
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129 | void TextureFrameControllerValue::setValue(Real value)
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130 | {
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131 | int numFrames = mTextureLayer->getNumFrames();
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132 | mTextureLayer->setCurrentFrame((int)(value * numFrames) % numFrames);
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133 | }
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134 | //-----------------------------------------------------------------------
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135 | // TexCoordModifierControllerValue
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136 | //-----------------------------------------------------------------------
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137 | TexCoordModifierControllerValue::TexCoordModifierControllerValue(TextureUnitState* t,
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138 | bool translateU, bool translateV, bool scaleU, bool scaleV, bool rotate )
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139 | {
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140 | mTextureLayer = t;
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141 | mTransU = translateU;
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142 | mTransV = translateV;
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143 | mScaleU = scaleU;
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144 | mScaleV = scaleV;
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145 | mRotate = rotate;
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146 | }
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147 | //-----------------------------------------------------------------------
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148 | Real TexCoordModifierControllerValue::getValue() const
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149 | {
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150 | const Matrix4& pMat = mTextureLayer->getTextureTransform();
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151 | if (mTransU)
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152 | {
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153 | return pMat[0][3];
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154 | }
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155 | else if (mTransV)
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156 | {
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157 | return pMat[1][3];
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158 | }
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159 | else if (mScaleU)
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160 | {
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161 | return pMat[0][0];
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162 | }
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163 | else if (mScaleV)
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164 | {
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165 | return pMat[1][1];
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166 | }
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167 | // Shouldn't get here
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168 | return 0;
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169 | }
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170 | //-----------------------------------------------------------------------
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171 | void TexCoordModifierControllerValue::setValue(Real value)
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172 | {
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173 | if (mTransU)
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174 | {
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175 | mTextureLayer->setTextureUScroll(value);
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176 | }
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177 | if (mTransV)
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178 | {
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179 | mTextureLayer->setTextureVScroll(value);
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180 | }
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181 | if (mScaleU)
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182 | {
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183 | if (value >= 0)
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184 | {
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185 | // Add 1 to scale (+ve scales up)
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186 | mTextureLayer->setTextureUScale(1 + value);
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187 | }
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188 | else
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189 | {
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190 | // (-ve scales down)
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191 | mTextureLayer->setTextureUScale(1 / -value);
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192 | }
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193 | }
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194 | if (mScaleV)
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195 | {
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196 | if (value >= 0)
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197 | {
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198 | // Add 1 to scale (+ve scales up)
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199 | mTextureLayer->setTextureVScale(1 + value);
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200 | }
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201 | else
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202 | {
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203 | // (-ve scales down)
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204 | mTextureLayer->setTextureVScale(1 / -value);
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205 | }
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206 | }
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207 | if (mRotate)
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208 | {
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209 | mTextureLayer->setTextureRotate(Radian(value * Math::TWO_PI));
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210 | }
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211 | }
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212 | //-----------------------------------------------------------------------
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213 | //-----------------------------------------------------------------------
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214 | FloatGpuParameterControllerValue::FloatGpuParameterControllerValue(
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215 | GpuProgramParameters* params, size_t index) :
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216 | mParams(params), mParamIndex(index)
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217 | {
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218 | }
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219 | //-----------------------------------------------------------------------
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220 | Real FloatGpuParameterControllerValue::getValue(void) const
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221 | {
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222 | // do nothing, reading from a set of params not supported
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223 | return 0.0f;
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224 | }
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225 | //-----------------------------------------------------------------------
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226 | void FloatGpuParameterControllerValue::setValue(Real val)
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227 | {
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228 | static Vector4 v4 = Vector4(0,0,0,0);
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229 | v4.x = val;
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230 | mParams->setConstant(mParamIndex, v4);
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231 | }
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232 | //-----------------------------------------------------------------------
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233 | // PassthroughControllerFunction
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234 | //-----------------------------------------------------------------------
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235 | PassthroughControllerFunction::PassthroughControllerFunction(bool delta)
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236 | : ControllerFunction<Real>(delta)
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237 | {
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238 | }
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239 | //-----------------------------------------------------------------------
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240 | Real PassthroughControllerFunction::calculate(Real source)
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241 | {
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242 | return getAdjustedInput(source);
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243 |
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244 | }
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245 | //-----------------------------------------------------------------------
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246 | // AnimationControllerFunction
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247 | //-----------------------------------------------------------------------
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248 | AnimationControllerFunction::AnimationControllerFunction(Real sequenceTime, Real timeOffset)
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249 | : ControllerFunction<Real>(false)
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250 | {
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251 | mSeqTime = sequenceTime;
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252 | mTime = timeOffset;
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253 | }
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254 | //-----------------------------------------------------------------------
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255 | Real AnimationControllerFunction::calculate(Real source)
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256 | {
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257 | // Assume source is time since last update
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258 | mTime += source;
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259 | // Wrap
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260 | while (mTime >= mSeqTime) mTime -= mSeqTime;
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261 | while (mTime < 0) mTime += mSeqTime;
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262 |
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263 | // Return parametric
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264 | return mTime / mSeqTime;
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265 | }
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266 | //-----------------------------------------------------------------------
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267 | // ScaleControllerFunction
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268 | //-----------------------------------------------------------------------
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269 | ScaleControllerFunction::ScaleControllerFunction(Real factor, bool delta) : ControllerFunction<Real>(delta)
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270 | {
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271 | mScale = factor;
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272 | }
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273 | //-----------------------------------------------------------------------
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274 | Real ScaleControllerFunction::calculate(Real source)
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275 | {
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276 | return getAdjustedInput(source * mScale);
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277 |
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278 | }
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279 | //-----------------------------------------------------------------------
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280 | // WaveformControllerFunction
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281 | //-----------------------------------------------------------------------
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282 | WaveformControllerFunction::WaveformControllerFunction(WaveformType wType, Real base, Real frequency, Real phase, Real amplitude, bool delta, Real dutyCycle)
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283 | :ControllerFunction<Real>(delta)
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284 | {
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285 | mWaveType = wType;
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286 | mBase = base;
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287 | mFrequency = frequency;
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288 | mPhase = phase;
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289 | mAmplitude = amplitude;
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290 | mDeltaCount = phase;
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291 | mDutyCycle = dutyCycle;
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292 | }
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293 | //-----------------------------------------------------------------------
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294 | Real WaveformControllerFunction::getAdjustedInput(Real input)
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295 | {
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296 | Real adjusted = ControllerFunction<Real>::getAdjustedInput(input);
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297 |
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298 | // If not delta, adjust by phase here
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299 | // (delta inputs have it adjusted at initialisation)
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300 | if (!mDeltaInput)
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301 | {
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302 | adjusted += mPhase;
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303 | }
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304 |
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305 | return adjusted;
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306 | }
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307 | //-----------------------------------------------------------------------
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308 | Real WaveformControllerFunction::calculate(Real source)
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309 | {
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310 | Real input = getAdjustedInput(source * mFrequency);
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311 | Real output;
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312 | // For simplicity, factor input down to {0,1)
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313 | // Use looped subtract rather than divide / round
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314 | while (input >= 1.0)
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315 | input -= 1.0;
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316 | while (input < 0.0)
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317 | input += 1.0;
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318 |
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319 | // Calculate output in -1..1 range
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320 | switch (mWaveType)
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321 | {
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322 | case WFT_SINE:
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323 | output = Math::Sin(Radian(input * Math::TWO_PI));
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324 | break;
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325 | case WFT_TRIANGLE:
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326 | if (input < 0.25)
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327 | output = input * 4;
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328 | else if (input >= 0.25 && input < 0.75)
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329 | output = 1.0 - ((input - 0.25) * 4);
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330 | else
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331 | output = ((input - 0.75) * 4) - 1.0;
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332 |
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333 | break;
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334 | case WFT_SQUARE:
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335 | if (input <= 0.5)
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336 | output = 1.0;
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337 | else
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338 | output = -1.0;
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339 | break;
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340 | case WFT_SAWTOOTH:
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341 | output = (input * 2) - 1;
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342 | break;
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343 | case WFT_INVERSE_SAWTOOTH:
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344 | output = -((input * 2) - 1);
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345 | break;
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346 | case WFT_PWM:
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347 | if( input <= mDutyCycle )
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348 | output = 1.0;
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349 | else
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350 | output = -1.0;
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351 | break;
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352 | }
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353 |
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354 | // Scale output into 0..1 range and then by base + amplitude
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355 | return mBase + ((output + 1.0) * 0.5 * mAmplitude);
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356 |
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357 |
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358 | }
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359 | }
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360 |
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