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) 2000-2013 Torus Knot Software Ltd |
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8 | |
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9 | Permission is hereby granted, free of charge, to any person obtaining a copy |
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10 | of this software and associated documentation files (the "Software"), to deal |
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11 | in the Software without restriction, including without limitation the rights |
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12 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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13 | copies of the Software, and to permit persons to whom the Software is |
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14 | furnished to do so, subject to the following conditions: |
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15 | |
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16 | The above copyright notice and this permission notice shall be included in |
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17 | all copies or substantial portions of the Software. |
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18 | |
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19 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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20 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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21 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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22 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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23 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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24 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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25 | THE SOFTWARE. |
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26 | ----------------------------------------------------------------------------- |
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27 | */ |
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28 | #ifndef __ANIMABLE_H__ |
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29 | #define __ANIMABLE_H__ |
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30 | |
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31 | #include "OgrePrerequisites.h" |
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32 | #include "OgreVector2.h" |
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33 | #include "OgreVector3.h" |
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34 | #include "OgreVector4.h" |
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35 | #include "OgreQuaternion.h" |
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36 | #include "OgreColourValue.h" |
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37 | #include "OgreSharedPtr.h" |
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38 | #include "OgreStringVector.h" |
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39 | #include "OgreException.h" |
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40 | #include "OgreAny.h" |
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41 | #include "OgreHeaderPrefix.h" |
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42 | |
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43 | namespace Ogre { |
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44 | /** \addtogroup Core |
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45 | * @{ |
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46 | */ |
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47 | |
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48 | /** \addtogroup Animation |
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49 | * @{ |
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50 | */ |
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51 | |
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52 | /** Defines an object property which is animable, i.e. may be keyframed. |
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53 | @remarks |
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54 | Animable properties are those which can be altered over time by a |
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55 | predefined keyframe sequence. They may be set directly, or they may |
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56 | be modified from their existing state (common if multiple animations |
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57 | are expected to apply at once). Implementors of this interface are |
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58 | expected to override the 'setValue', 'setCurrentStateAsBaseValue' and |
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59 | 'applyDeltaValue' methods appropriate to the type in question, and to |
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60 | initialise the type. |
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61 | @par |
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62 | AnimableValue instances are accessible through any class which extends |
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63 | AnimableObject in order to expose it's animable properties. |
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64 | @note |
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65 | This class is an instance of the Adapter pattern, since it generalises |
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66 | access to a particular property. Whilst it could have been templated |
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67 | such that the type which was being referenced was compiled in, this would |
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68 | make it more difficult to aggregated generically, and since animations |
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69 | are often comprised of multiple properties it helps to be able to deal |
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70 | with all values through a single class. |
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71 | */ |
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72 | class _OgreExport AnimableValue : public AnimableAlloc |
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73 | { |
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74 | public: |
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75 | /// The type of the value being animated |
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76 | enum ValueType |
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77 | { |
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78 | INT, |
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79 | REAL, |
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80 | VECTOR2, |
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81 | VECTOR3, |
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82 | VECTOR4, |
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83 | QUATERNION, |
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84 | COLOUR, |
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85 | RADIAN, |
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86 | DEGREE |
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87 | }; |
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88 | protected: |
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89 | /// Value type |
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90 | ValueType mType; |
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91 | |
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92 | /// Base value data |
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93 | union |
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94 | { |
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95 | int mBaseValueInt; |
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96 | Real mBaseValueReal[4]; |
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97 | }; |
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98 | |
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99 | /// Internal method to set a value as base |
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100 | virtual void setAsBaseValue(int val) { mBaseValueInt = val; } |
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101 | /// Internal method to set a value as base |
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102 | virtual void setAsBaseValue(Real val) { mBaseValueReal[0] = val; } |
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103 | /// Internal method to set a value as base |
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104 | virtual void setAsBaseValue(const Vector2& val) |
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105 | { memcpy(mBaseValueReal, val.ptr(), sizeof(Real)*2); } |
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106 | /// Internal method to set a value as base |
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107 | virtual void setAsBaseValue(const Vector3& val) |
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108 | { memcpy(mBaseValueReal, val.ptr(), sizeof(Real)*3); } |
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109 | /// Internal method to set a value as base |
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110 | virtual void setAsBaseValue(const Vector4& val) |
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111 | { memcpy(mBaseValueReal, val.ptr(), sizeof(Real)*4); } |
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112 | /// Internal method to set a value as base |
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113 | virtual void setAsBaseValue(const Quaternion& val) |
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114 | { memcpy(mBaseValueReal, val.ptr(), sizeof(Real)*4); } |
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115 | /// Internal method to set a value as base |
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116 | virtual void setAsBaseValue(const Any& val); |
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117 | /// Internal method to set a value as base |
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118 | virtual void setAsBaseValue(const ColourValue& val) |
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119 | { |
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120 | mBaseValueReal[0] = val.r; |
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121 | mBaseValueReal[1] = val.g; |
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122 | mBaseValueReal[2] = val.b; |
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123 | mBaseValueReal[3] = val.a; |
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124 | } |
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125 | /// Internal method to set a value as base |
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126 | virtual void setAsBaseValue(const Radian& val) |
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127 | { |
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128 | mBaseValueReal[0] = val.valueRadians(); |
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129 | } |
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130 | /// Internal method to set a value as base |
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131 | virtual void setAsBaseValue(const Degree& val) |
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132 | { |
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133 | mBaseValueReal[0] = val.valueRadians(); |
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134 | } |
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135 | |
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136 | |
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137 | public: |
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138 | AnimableValue(ValueType t) : mType(t) {} |
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139 | virtual ~AnimableValue() {} |
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140 | |
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141 | /// Gets the value type of this animable value |
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142 | ValueType getType(void) const { return mType; } |
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143 | |
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144 | /// Sets the current state as the 'base' value; used for delta animation |
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145 | virtual void setCurrentStateAsBaseValue(void) = 0; |
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146 | |
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147 | /// Set value |
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148 | virtual void setValue(int) { |
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149 | OGRE_EXCEPT(Exception::ERR_NOT_IMPLEMENTED, "", ""); |
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150 | } |
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151 | /// Set value |
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152 | virtual void setValue(Real) { |
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153 | OGRE_EXCEPT(Exception::ERR_NOT_IMPLEMENTED, "", ""); |
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154 | } |
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155 | /// Set value |
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156 | virtual void setValue(const Vector2&) { |
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157 | OGRE_EXCEPT(Exception::ERR_NOT_IMPLEMENTED, "", ""); |
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158 | } |
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159 | /// Set value |
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160 | virtual void setValue(const Vector3&) { |
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161 | OGRE_EXCEPT(Exception::ERR_NOT_IMPLEMENTED, "", ""); |
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162 | } |
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163 | /// Set value |
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164 | virtual void setValue(const Vector4&) { |
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165 | OGRE_EXCEPT(Exception::ERR_NOT_IMPLEMENTED, "", ""); |
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166 | } |
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167 | /// Set value |
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168 | virtual void setValue(const Quaternion&) { |
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169 | OGRE_EXCEPT(Exception::ERR_NOT_IMPLEMENTED, "", ""); |
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170 | } |
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171 | /// Set value |
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172 | virtual void setValue(const ColourValue&) { |
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173 | OGRE_EXCEPT(Exception::ERR_NOT_IMPLEMENTED, "", ""); |
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174 | } |
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175 | /// Set value |
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176 | virtual void setValue(const Radian&) { |
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177 | OGRE_EXCEPT(Exception::ERR_NOT_IMPLEMENTED, "", ""); |
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178 | } |
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179 | /// Set value |
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180 | virtual void setValue(const Degree&) { |
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181 | OGRE_EXCEPT(Exception::ERR_NOT_IMPLEMENTED, "", ""); |
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182 | } |
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183 | /// Set value |
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184 | virtual void setValue(const Any& val); |
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185 | |
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186 | // reset to base value |
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187 | virtual void resetToBaseValue(void); |
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188 | |
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189 | /// Apply delta value |
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190 | virtual void applyDeltaValue(int) { |
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191 | OGRE_EXCEPT(Exception::ERR_NOT_IMPLEMENTED, "", ""); |
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192 | } |
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193 | /// Set value |
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194 | virtual void applyDeltaValue(Real) { |
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195 | OGRE_EXCEPT(Exception::ERR_NOT_IMPLEMENTED, "", ""); |
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196 | } |
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197 | /// Apply delta value |
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198 | virtual void applyDeltaValue(const Vector2&) { |
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199 | OGRE_EXCEPT(Exception::ERR_NOT_IMPLEMENTED, "", ""); |
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200 | } |
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201 | /// Apply delta value |
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202 | virtual void applyDeltaValue(const Vector3&) { |
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203 | OGRE_EXCEPT(Exception::ERR_NOT_IMPLEMENTED, "", ""); |
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204 | } |
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205 | /// Apply delta value |
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206 | virtual void applyDeltaValue(const Vector4&) { |
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207 | OGRE_EXCEPT(Exception::ERR_NOT_IMPLEMENTED, "", ""); |
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208 | } |
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209 | /// Apply delta value |
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210 | virtual void applyDeltaValue(const Quaternion&) { |
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211 | OGRE_EXCEPT(Exception::ERR_NOT_IMPLEMENTED, "", ""); |
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212 | } |
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213 | /// Apply delta value |
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214 | virtual void applyDeltaValue(const ColourValue&) { |
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215 | OGRE_EXCEPT(Exception::ERR_NOT_IMPLEMENTED, "", ""); |
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216 | } |
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217 | /// Apply delta value |
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218 | virtual void applyDeltaValue(const Degree&) { |
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219 | OGRE_EXCEPT(Exception::ERR_NOT_IMPLEMENTED, "", ""); |
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220 | } |
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221 | /// Apply delta value |
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222 | virtual void applyDeltaValue(const Radian&) { |
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223 | OGRE_EXCEPT(Exception::ERR_NOT_IMPLEMENTED, "", ""); |
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224 | } |
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225 | /// Apply delta value |
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226 | virtual void applyDeltaValue(const Any& val); |
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227 | |
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228 | |
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229 | }; |
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230 | |
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231 | typedef SharedPtr<AnimableValue> AnimableValuePtr; |
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232 | |
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233 | |
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234 | |
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235 | /** Defines an interface to classes which have one or more AnimableValue |
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236 | instances to expose. |
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237 | */ |
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238 | class _OgreExport AnimableObject |
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239 | { |
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240 | protected: |
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241 | typedef map<String, StringVector>::type AnimableDictionaryMap; |
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242 | /// Static map of class name to list of animable value names |
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243 | static AnimableDictionaryMap msAnimableDictionary; |
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244 | /** Get the name of the animable dictionary for this class. |
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245 | @remarks |
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246 | Subclasses must override this if they want to support animation of |
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247 | their values. |
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248 | */ |
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249 | virtual const String& getAnimableDictionaryName(void) const |
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250 | { return StringUtil::BLANK; } |
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251 | /** Internal method for creating a dictionary of animable value names |
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252 | for the class, if it does not already exist. |
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253 | */ |
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254 | void createAnimableDictionary(void) const |
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255 | { |
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256 | if (msAnimableDictionary.find(getAnimableDictionaryName()) |
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257 | == msAnimableDictionary.end()) |
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258 | { |
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259 | StringVector vec; |
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260 | initialiseAnimableDictionary(vec); |
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261 | msAnimableDictionary[getAnimableDictionaryName()] = vec; |
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262 | } |
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263 | |
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264 | } |
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265 | |
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266 | /// Get an updateable reference to animable value list |
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267 | StringVector& _getAnimableValueNames(void) |
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268 | { |
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269 | AnimableDictionaryMap::iterator i = |
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270 | msAnimableDictionary.find(getAnimableDictionaryName()); |
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271 | if (i != msAnimableDictionary.end()) |
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272 | { |
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273 | return i->second; |
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274 | } |
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275 | else |
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276 | { |
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277 | OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, |
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278 | "Animable value list not found for " + getAnimableDictionaryName(), |
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279 | "AnimableObject::getAnimableValueNames"); |
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280 | } |
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281 | |
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282 | } |
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283 | |
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284 | /** Internal method for initialising dictionary; should be implemented by |
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285 | subclasses wanting to expose animable parameters. |
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286 | */ |
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287 | virtual void initialiseAnimableDictionary(StringVector&) const {} |
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288 | |
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289 | |
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290 | public: |
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291 | AnimableObject() {} |
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292 | virtual ~AnimableObject() {} |
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293 | |
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294 | /** Gets a list of animable value names for this object. */ |
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295 | const StringVector& getAnimableValueNames(void) const |
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296 | { |
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297 | createAnimableDictionary(); |
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298 | |
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299 | AnimableDictionaryMap::iterator i = |
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300 | msAnimableDictionary.find(getAnimableDictionaryName()); |
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301 | if (i != msAnimableDictionary.end()) |
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302 | { |
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303 | return i->second; |
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304 | } |
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305 | else |
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306 | { |
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307 | OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, |
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308 | "Animable value list not found for " + getAnimableDictionaryName(), |
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309 | "AnimableObject::getAnimableValueNames"); |
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310 | } |
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311 | |
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312 | } |
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313 | |
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314 | /** Create a reference-counted AnimableValuePtr for the named value. |
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315 | @remarks |
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316 | You can use the returned object to animate a value on this object, |
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317 | using AnimationTrack. Subclasses must override this if they wish |
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318 | to support animation of their values. |
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319 | */ |
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320 | virtual AnimableValuePtr createAnimableValue(const String& valueName) |
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321 | { |
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322 | OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, |
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323 | "No animable value named '" + valueName + "' present.", |
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324 | "AnimableObject::createAnimableValue"); |
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325 | } |
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326 | |
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327 | |
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328 | |
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329 | }; |
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330 | |
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331 | /** @} */ |
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332 | /** @} */ |
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333 | |
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334 | } |
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335 | |
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336 | #include "OgreHeaderSuffix.h" |
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337 | |
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338 | #endif |
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339 | |
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