| 137 | static bool gBuilding = false; |
| 138 | |
| 139 | void CameraSpline::buildTimeMap() |
| 140 | { |
| 141 | if (!mIsMapDirty) |
| 142 | return; |
| 143 | |
| 144 | gBuilding = true; |
| 145 | |
| 146 | mTimeMap.clear(); |
| 147 | mTimeMap.reserve(size()*3); // preallocate |
| 148 | |
| 149 | // Initial node and knot value.. |
| 150 | TimeMap map; |
| 151 | map.mTime = 0; |
| 152 | map.mDistance = 0; |
| 153 | mTimeMap.push_back(map); |
| 154 | |
| 155 | Knot ka,kj,ki; |
| 156 | value(0, &kj, true); |
| 157 | F32 length = 0.0f; |
| 158 | ka = kj; |
| 159 | |
| 160 | // Loop through the knots and add nodes. Nodes are added for every knot and |
| 161 | // whenever the spline length and segment length deviate by epsilon. |
| 162 | F32 epsilon = Con::getFloatVariable("CameraSpline::epsilon", 0.90f); |
| 163 | const F32 Step = 0.05f; |
| 164 | F32 lt = 0,time = 0; |
| 165 | do |
| 166 | { |
| 167 | if ((time += Step) > F32(mSize - 1)) |
| 168 | time = (F32)mSize - 1.0f; |
| 169 | |
| 170 | value(time, &ki, true); |
| 171 | length += (ki.mPosition - kj.mPosition).len(); |
| 172 | F32 segment = (ki.mPosition - ka.mPosition).len(); |
| 173 | |
| 174 | if ((segment / length) < epsilon || time == (mSize - 1) || mFloor(lt) != mFloor(time)) |
| 175 | { |
| 176 | map.mTime = time; |
| 177 | map.mDistance = length; |
| 178 | mTimeMap.push_back(map); |
| 179 | ka = ki; |
| 180 | } |
| 181 | kj = ki; |
| 182 | lt = time; |
| 183 | } |
| 184 | while (time < mSize - 1); |
| 185 | |
| 186 | mIsMapDirty = false; |
| 187 | |
| 188 | gBuilding = false; |
| 189 | } |
| 190 | |
| 191 | |
| 192 | //----------------------------------------------------------------------------- |