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 | Root::getSingleton().addFrameListener(this);
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42 | mFrameTime = 0;
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43 | mTimeFactor = 1;
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44 | mFrameDelay = 0;
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45 | mElapsedTime = 0;
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46 |
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47 | }
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48 | //-----------------------------------------------------------------------
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49 | bool FrameTimeControllerValue::frameStarted(const FrameEvent &evt)
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50 | {
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51 | if(mFrameDelay)
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52 | {
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53 | // Fixed frame time
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54 | mFrameTime = mFrameDelay;
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55 | mTimeFactor = mFrameDelay / evt.timeSinceLastFrame;
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56 | }
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57 | else
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58 | {
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59 | // Save the time value after applying time factor
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60 | mFrameTime = mTimeFactor * evt.timeSinceLastFrame;
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61 | }
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62 | // Accumulate the elapsed time
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63 | mElapsedTime += mFrameTime;
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64 | return true;
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65 | }
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66 | //-----------------------------------------------------------------------
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67 | bool FrameTimeControllerValue::frameEnded(const FrameEvent &evt)
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68 | {
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69 | return true;
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70 | }
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71 | //-----------------------------------------------------------------------
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72 | Real FrameTimeControllerValue::getValue() const
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73 | {
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74 | return mFrameTime;
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75 | }
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76 | //-----------------------------------------------------------------------
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77 | void FrameTimeControllerValue::setValue(Real value)
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78 | {
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79 | // Do nothing - value is set from frame listener
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80 | }
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81 | //-----------------------------------------------------------------------
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82 | Real FrameTimeControllerValue::getTimeFactor(void) const {
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83 | return mTimeFactor;
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84 | }
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85 | //-----------------------------------------------------------------------
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86 | void FrameTimeControllerValue::setTimeFactor(Real tf) {
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87 | if(tf >= 0)
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88 | {
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89 | mTimeFactor = tf;
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90 | mFrameDelay = 0;
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91 | }
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92 | }
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93 | //-----------------------------------------------------------------------
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94 | Real FrameTimeControllerValue::getFrameDelay(void) const {
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95 | return mFrameDelay;
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96 | }
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97 | //-----------------------------------------------------------------------
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98 | void FrameTimeControllerValue::setFrameDelay(Real fd) {
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99 | mTimeFactor = 0;
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100 | mFrameDelay = fd;
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101 | }
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102 | //-----------------------------------------------------------------------
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103 | Real FrameTimeControllerValue::getElapsedTime(void) const
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104 | {
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105 | return mElapsedTime;
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106 | }
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107 | //-----------------------------------------------------------------------
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108 | void FrameTimeControllerValue::setElapsedTime(Real elapsedTime)
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109 | {
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110 | mElapsedTime = elapsedTime;
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111 | }
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112 | //-----------------------------------------------------------------------
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113 | // TextureFrameControllerValue
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114 | //-----------------------------------------------------------------------
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115 | TextureFrameControllerValue::TextureFrameControllerValue(TextureUnitState* t)
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116 | {
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117 | mTextureLayer = t;
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118 | }
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119 | //-----------------------------------------------------------------------
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120 | Real TextureFrameControllerValue::getValue(void) const
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121 | {
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122 | int numFrames = mTextureLayer->getNumFrames();
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123 | return (mTextureLayer->getCurrentFrame() / numFrames);
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124 | }
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125 | //-----------------------------------------------------------------------
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126 | void TextureFrameControllerValue::setValue(Real value)
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127 | {
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128 | int numFrames = mTextureLayer->getNumFrames();
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129 | mTextureLayer->setCurrentFrame((int)(value * numFrames) % numFrames);
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130 | }
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131 | //-----------------------------------------------------------------------
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132 | // TexCoordModifierControllerValue
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133 | //-----------------------------------------------------------------------
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134 | TexCoordModifierControllerValue::TexCoordModifierControllerValue(TextureUnitState* t,
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135 | bool translateU, bool translateV, bool scaleU, bool scaleV, bool rotate )
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136 | {
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137 | mTextureLayer = t;
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138 | mTransU = translateU;
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139 | mTransV = translateV;
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140 | mScaleU = scaleU;
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141 | mScaleV = scaleV;
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142 | mRotate = rotate;
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143 | }
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144 | //-----------------------------------------------------------------------
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145 | Real TexCoordModifierControllerValue::getValue() const
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146 | {
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147 | const Matrix4& pMat = mTextureLayer->getTextureTransform();
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148 | if (mTransU)
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149 | {
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150 | return pMat[0][3];
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151 | }
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152 | else if (mTransV)
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153 | {
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154 | return pMat[1][3];
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155 | }
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156 | else if (mScaleU)
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157 | {
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158 | return pMat[0][0];
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159 | }
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160 | else if (mScaleV)
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161 | {
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162 | return pMat[1][1];
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163 | }
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164 | // Shouldn't get here
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165 | return 0;
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166 | }
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167 | //-----------------------------------------------------------------------
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168 | void TexCoordModifierControllerValue::setValue(Real value)
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169 | {
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170 | if (mTransU)
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171 | {
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172 | mTextureLayer->setTextureUScroll(value);
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173 | }
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174 | if (mTransV)
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175 | {
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176 | mTextureLayer->setTextureVScroll(value);
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177 | }
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178 | if (mScaleU)
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179 | {
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180 | if (value >= 0)
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181 | {
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182 | // Add 1 to scale (+ve scales up)
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183 | mTextureLayer->setTextureUScale(1 + value);
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184 | }
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185 | else
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186 | {
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187 | // (-ve scales down)
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188 | mTextureLayer->setTextureUScale(1 / -value);
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189 | }
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190 | }
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191 | if (mScaleV)
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192 | {
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193 | if (value >= 0)
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194 | {
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195 | // Add 1 to scale (+ve scales up)
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196 | mTextureLayer->setTextureVScale(1 + value);
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197 | }
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198 | else
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199 | {
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200 | // (-ve scales down)
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201 | mTextureLayer->setTextureVScale(1 / -value);
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202 | }
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203 | }
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204 | if (mRotate)
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205 | {
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206 | mTextureLayer->setTextureRotate(Radian(value * Math::TWO_PI));
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207 | }
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208 | }
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209 | //-----------------------------------------------------------------------
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210 | //-----------------------------------------------------------------------
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211 | FloatGpuParameterControllerValue::FloatGpuParameterControllerValue(
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212 | GpuProgramParameters* params, size_t index) :
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213 | mParams(params), mParamIndex(index)
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214 | {
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215 | }
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216 | //-----------------------------------------------------------------------
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217 | Real FloatGpuParameterControllerValue::getValue(void) const
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218 | {
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219 | // do nothing, reading from a set of params not supported
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220 | return 0.0f;
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221 | }
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222 | //-----------------------------------------------------------------------
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223 | void FloatGpuParameterControllerValue::setValue(Real val)
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224 | {
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225 | static Vector4 v4 = Vector4(0,0,0,0);
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226 | v4.x = val;
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227 | mParams->setConstant(mParamIndex, v4);
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228 | }
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229 | //-----------------------------------------------------------------------
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230 | // PassthroughControllerFunction
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231 | //-----------------------------------------------------------------------
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232 | PassthroughControllerFunction::PassthroughControllerFunction(bool delta)
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233 | : ControllerFunction<Real>(delta)
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234 | {
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235 | }
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236 | //-----------------------------------------------------------------------
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237 | Real PassthroughControllerFunction::calculate(Real source)
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238 | {
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239 | return getAdjustedInput(source);
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240 |
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241 | }
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242 | //-----------------------------------------------------------------------
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243 | // AnimationControllerFunction
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244 | //-----------------------------------------------------------------------
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245 | AnimationControllerFunction::AnimationControllerFunction(Real sequenceTime, Real timeOffset)
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246 | : ControllerFunction<Real>(false)
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247 | {
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248 | mSeqTime = sequenceTime;
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249 | mTime = timeOffset;
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250 | }
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251 | //-----------------------------------------------------------------------
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252 | Real AnimationControllerFunction::calculate(Real source)
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253 | {
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254 | // Assume source is time since last update
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255 | mTime += source;
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256 | // Wrap
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257 | while (mTime >= mSeqTime) mTime -= mSeqTime;
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258 | while (mTime < 0) mTime += mSeqTime;
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259 |
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260 | // Return parametric
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261 | return mTime / mSeqTime;
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262 | }
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263 | //-----------------------------------------------------------------------
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264 | // ScaleControllerFunction
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265 | //-----------------------------------------------------------------------
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266 | ScaleControllerFunction::ScaleControllerFunction(Real factor, bool delta) : ControllerFunction<Real>(delta)
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267 | {
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268 | mScale = factor;
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269 | }
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270 | //-----------------------------------------------------------------------
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271 | Real ScaleControllerFunction::calculate(Real source)
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272 | {
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273 | return getAdjustedInput(source * mScale);
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274 |
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275 | }
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276 | //-----------------------------------------------------------------------
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277 | // WaveformControllerFunction
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278 | //-----------------------------------------------------------------------
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279 | WaveformControllerFunction::WaveformControllerFunction(WaveformType wType, Real base, Real frequency, Real phase, Real amplitude, bool delta, Real dutyCycle)
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280 | :ControllerFunction<Real>(delta)
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281 | {
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282 | mWaveType = wType;
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283 | mBase = base;
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284 | mFrequency = frequency;
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285 | mPhase = phase;
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286 | mAmplitude = amplitude;
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287 | mDeltaCount = phase;
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288 | mDutyCycle = dutyCycle;
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289 | }
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290 | //-----------------------------------------------------------------------
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291 | Real WaveformControllerFunction::getAdjustedInput(Real input)
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292 | {
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293 | Real adjusted = ControllerFunction<Real>::getAdjustedInput(input);
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294 |
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295 | // If not delta, adjust by phase here
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296 | // (delta inputs have it adjusted at initialisation)
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297 | if (!mDeltaInput)
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298 | {
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299 | adjusted += mPhase;
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300 | }
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301 |
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302 | return adjusted;
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303 | }
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304 | //-----------------------------------------------------------------------
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305 | Real WaveformControllerFunction::calculate(Real source)
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306 | {
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307 | Real input = getAdjustedInput(source * mFrequency);
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308 | Real output;
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309 | // For simplicity, factor input down to {0,1)
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310 | // Use looped subtract rather than divide / round
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311 | while (input >= 1.0)
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312 | input -= 1.0;
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313 | while (input < 0.0)
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314 | input += 1.0;
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315 |
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316 | // Calculate output in -1..1 range
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317 | switch (mWaveType)
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318 | {
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319 | case WFT_SINE:
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320 | output = Math::Sin(Radian(input * Math::TWO_PI));
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321 | break;
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322 | case WFT_TRIANGLE:
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323 | if (input < 0.25)
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324 | output = input * 4;
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325 | else if (input >= 0.25 && input < 0.75)
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326 | output = 1.0 - ((input - 0.25) * 4);
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327 | else
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328 | output = ((input - 0.75) * 4) - 1.0;
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329 |
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330 | break;
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331 | case WFT_SQUARE:
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332 | if (input <= 0.5)
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333 | output = 1.0;
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334 | else
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335 | output = -1.0;
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336 | break;
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337 | case WFT_SAWTOOTH:
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338 | output = (input * 2) - 1;
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339 | break;
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340 | case WFT_INVERSE_SAWTOOTH:
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341 | output = -((input * 2) - 1);
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342 | break;
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343 | case WFT_PWM:
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344 | if( input <= mDutyCycle )
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345 | output = 1.0;
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346 | else
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347 | output = -1.0;
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348 | break;
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349 | }
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350 |
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351 | // Scale output into 0..1 range and then by base + amplitude
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352 | return mBase + ((output + 1.0) * 0.5 * mAmplitude);
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353 |
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354 |
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355 | }
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356 | }
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357 |
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