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3 | |
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4 | #include "animation.h" |
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5 | |
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6 | //! A Class to handle some animation for single floated values. |
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7 | template<class T> class tAnimation : public Animation |
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8 | { |
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9 | public: |
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10 | tAnimation(T* object = NULL, void (T::*funcToAnim)(float) = NULL); |
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11 | virtual ~tAnimation(); |
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12 | |
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13 | virtual void rewind(); |
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14 | |
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15 | void setFuncToAnim(T* object, void (T::*funcToAnim)(float)); |
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16 | void addKeyFrame(float value, float duration, ANIM_FUNCTION animFunc = ANIM_LINEAR); |
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17 | |
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18 | virtual void tick(float time); |
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19 | |
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20 | // animation functions |
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21 | void setAnimFunc(ANIM_FUNCTION animFunc); |
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22 | |
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23 | float constant(float timePassed) const; |
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24 | float linear(float timePassed) const; |
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25 | float sine(float timePassed) const; |
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26 | float cosine(float timePassed) const; |
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27 | float exp(float timePassed) const; |
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28 | float negExp(float timePassed) const; |
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29 | float quadratic(float timePassed) const; |
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30 | float random(float timePassed) const; |
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31 | // ANIM_FUNCTION animFunc; |
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32 | float (tAnimation<T>::*animFunc)(float) const; |
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33 | KeyFrameF* currentKeyFrame; |
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34 | KeyFrameF* nextKeyFrame; |
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35 | tList<KeyFrameF>* keyFrameList; |
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36 | |
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37 | |
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38 | |
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39 | |
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40 | private: |
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41 | float expFactor; |
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42 | T* object; |
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43 | void (T::*funcToAnim)(float); |
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44 | }; |
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45 | |
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46 | |
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47 | |
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48 | /** |
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49 | \brief standard constructor |
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50 | |
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51 | */ |
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52 | template<class T> |
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53 | tAnimation<T>::tAnimation (T* object, void (T::*funcToAnim)(float)) |
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54 | { |
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55 | // create a new List |
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56 | this->keyFrameList = new tList<KeyFrameF>(); |
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57 | KeyFrameF* tmpKeyFrame = new KeyFrameF; |
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58 | tmpKeyFrame->value = 0.0; |
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59 | tmpKeyFrame->duration = 1.0; |
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60 | keyFrameList->add(tmpKeyFrame); |
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61 | |
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62 | this->currentKeyFrame = tmpKeyFrame; |
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63 | this->nextKeyFrame = tmpKeyFrame; |
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64 | |
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65 | this->animFunc = &tAnimation<T>::linear; |
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66 | |
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67 | this->setFuncToAnim(object, funcToAnim); |
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68 | } |
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69 | |
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70 | |
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71 | /** |
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72 | \brief standard deconstructor |
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73 | |
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74 | */ |
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75 | template<class T> |
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76 | tAnimation<T>::~tAnimation () |
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77 | { |
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78 | // delete all the KeyFrames |
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79 | tIterator<KeyFrameF>* itKF = keyFrameList->getIterator(); |
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80 | KeyFrameF* enumKF = itKF->nextElement(); |
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81 | while (enumKF) |
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82 | { |
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83 | delete enumKF; |
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84 | enumKF = itKF->nextElement(); |
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85 | } |
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86 | delete itKF; |
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87 | delete this->keyFrameList; |
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88 | |
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89 | } |
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90 | |
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91 | template<class T> |
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92 | void tAnimation<T>::rewind(void) |
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93 | { |
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94 | this->currentKeyFrame = keyFrameList->firstElement(); |
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95 | this->nextKeyFrame = keyFrameList->nextElement(keyFrameList->firstElement()); |
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96 | this->localTime = 0.0; |
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97 | } |
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98 | |
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99 | template<class T> |
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100 | void tAnimation<T>::setFuncToAnim(T* object, void (T::*funcToAnim)(float)) |
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101 | { |
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102 | this->baseObject = this->object = object; |
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103 | this->funcToAnim = funcToAnim; |
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104 | } |
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105 | |
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106 | template<class T> |
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107 | void tAnimation<T>::addKeyFrame(float value, float duration, ANIM_FUNCTION animFunc) |
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108 | { |
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109 | // some small check |
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110 | if (duration <= 0.0) |
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111 | duration = 1.0; |
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112 | |
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113 | |
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114 | KeyFrameF* tmpKeyFrame; |
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115 | |
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116 | if (bHasKeys) |
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117 | { |
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118 | tmpKeyFrame = new KeyFrameF; |
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119 | if (this->currentKeyFrame == this->nextKeyFrame) |
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120 | this->nextKeyFrame = tmpKeyFrame; |
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121 | this->keyFrameList->add(tmpKeyFrame); |
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122 | |
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123 | } |
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124 | else |
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125 | { |
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126 | tmpKeyFrame = this->keyFrameList->firstElement(); |
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127 | bHasKeys = true; |
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128 | this->setAnimFunc(animFunc); |
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129 | } |
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130 | tmpKeyFrame->value = value; |
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131 | tmpKeyFrame->duration = duration; |
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132 | tmpKeyFrame->animFunc = animFunc; |
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133 | } |
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134 | |
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135 | |
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136 | template<class T> |
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137 | void tAnimation<T>::tick(float time) |
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138 | { |
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139 | if (this->bRunning) |
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140 | { |
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141 | this->localTime += time; |
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142 | if (localTime >= this->currentKeyFrame->duration) |
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143 | { |
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144 | // switching to the next Key-Frame |
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145 | this->currentKeyFrame = this->nextKeyFrame; |
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146 | this->localTime = 0; |
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147 | // checking, if we should still Play the animation |
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148 | if (this->currentKeyFrame == this->keyFrameList->lastElement()) |
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149 | { |
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150 | switch (this->postInfinity) |
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151 | { |
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152 | case ANIM_INF_CONSTANT: |
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153 | this->bRunning = false; |
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154 | break; |
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155 | case ANIM_INF_REWIND: |
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156 | break; |
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157 | } |
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158 | } |
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159 | this->nextKeyFrame = this->keyFrameList->nextElement(this->nextKeyFrame); |
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160 | printf("%p from:%f to:%f\n", this->currentKeyFrame,this->currentKeyFrame->value, this->nextKeyFrame->value); |
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161 | this->setAnimFunc(this->currentKeyFrame->animFunc); |
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162 | } |
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163 | |
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164 | (this->object->*(funcToAnim))((this->*animFunc)(this->localTime)); |
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165 | } |
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166 | } |
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167 | |
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168 | |
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169 | template<class T> |
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170 | void tAnimation<T>::setAnimFunc(ANIM_FUNCTION animFunc) |
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171 | { |
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172 | switch (animFunc) |
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173 | { |
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174 | default: |
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175 | case ANIM_CONSTANT: |
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176 | this->animFunc = &tAnimation<T>::constant; |
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177 | break; |
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178 | case ANIM_LINEAR: |
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179 | this->animFunc = &tAnimation<T>::linear; |
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180 | break; |
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181 | case ANIM_SINE: |
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182 | this->animFunc = &tAnimation<T>::sine; |
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183 | break; |
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184 | case ANIM_COSINE: |
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185 | this->animFunc = &tAnimation<T>::cosine; |
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186 | break; |
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187 | case ANIM_EXP: |
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188 | this->animFunc = &tAnimation<T>::exp; |
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189 | break; |
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190 | case ANIM_NEG_EXP: |
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191 | { |
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192 | this->animFunc = &tAnimation<T>::negExp; |
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193 | float d = fabs(this->currentKeyFrame->value - this->nextKeyFrame->value); |
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194 | expFactor = - 1.0 / this->currentKeyFrame->duration * logf(DELTA_X); |
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195 | break; |
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196 | } |
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197 | case ANIM_QUADRATIC: |
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198 | this->animFunc = &tAnimation<T>::quadratic; |
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199 | break; |
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200 | case ANIM_RANDOM: |
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201 | this->animFunc = &tAnimation<T>::random; |
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202 | break; |
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203 | } |
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204 | } |
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205 | |
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206 | |
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207 | // animation functions |
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208 | template<class T> |
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209 | float tAnimation<T>::random(float timePassed) const |
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210 | { |
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211 | return (float)rand()/(float)RAND_MAX; |
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212 | } |
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213 | |
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214 | template<class T> |
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215 | float tAnimation<T>::constant(float timePassed) const |
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216 | { |
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217 | return this->currentKeyFrame->value; |
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218 | } |
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219 | |
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220 | template<class T> |
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221 | float tAnimation<T>::linear(float timePassed) const |
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222 | { |
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223 | return this->currentKeyFrame->value + (this->nextKeyFrame->value - this->currentKeyFrame->value) |
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224 | * (timePassed / this->currentKeyFrame->duration); |
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225 | // PRINTF(0)("value is %f, %p %p\n", val, this->currentKeyFrame, this->nextKeyFrame); |
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226 | // return val; |
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227 | } |
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228 | |
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229 | template<class T> |
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230 | float tAnimation<T>::sine(float timePassed) const |
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231 | { |
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232 | float d = this->currentKeyFrame->value - this->nextKeyFrame->value; |
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233 | float e = 0.5 * d * (1 - cos(M_PI * timePassed / this->currentKeyFrame->duration)); |
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234 | return this->currentKeyFrame->value - e; |
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235 | /* |
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236 | return his->currentKeyFrame->value - (this->nextKeyFrame->value - this->currentKeyFrame->value) |
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237 | * sin(timePassed / this->currentKeyFrame->duration * M_PI); |
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238 | */ |
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239 | } |
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240 | |
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241 | template<class T> |
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242 | float tAnimation<T>::cosine(float timePassed) const |
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243 | { |
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244 | float d = this->currentKeyFrame->value - this->nextKeyFrame->value; |
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245 | float e = 0.5 * d * (sin(M_PI * timePassed / this->currentKeyFrame->duration)); |
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246 | if( timePassed > 0.5*this->currentKeyFrame->duration) e = (d - e); |
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247 | return this->currentKeyFrame->value - e; |
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248 | /* |
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249 | return this->currentKeyFrame->value - (this->nextKeyFrame->value - this->currentKeyFrame->value) |
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250 | * cos(timePassed / this->currentKeyFrame->duration * M_PI); |
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251 | */ |
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252 | } |
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253 | |
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254 | template<class T> |
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255 | float tAnimation<T>::exp(float timePassed) const |
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256 | { |
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257 | } |
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258 | |
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259 | template<class T> |
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260 | float tAnimation<T>::negExp(float timePassed) const |
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261 | { |
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262 | float d = this->currentKeyFrame->value - this->nextKeyFrame->value; |
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263 | float e = d * (1.0 - expf(- timePassed * expFactor)); |
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264 | return this->currentKeyFrame->value - e; |
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265 | } |
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266 | |
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267 | template<class T> |
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268 | float tAnimation<T>::quadratic(float timePassed) const |
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269 | { |
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270 | |
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271 | } |
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