| 129 | } |
| 130 | |
| 131 | void BspNode::GetVisibleSet(Culler& culler, |
| 132 | std::shared_ptr<Camera> const& camera, bool noCull) |
| 133 | { |
| 134 | // Get visible geometry in back-to-front order. If a global effect is |
| 135 | // active, the geometry objects in the subtree will be drawn using it. |
| 136 | Spatial* posChild = GetPositiveChild(); |
| 137 | Spatial* copChild = GetCoplanarChild(); |
| 138 | Spatial* negChild = GetNegativeChild(); |
| 139 | |
| 140 | int32_t positionSide = WhichSide(camera->GetPosition()); |
| 141 | int32_t frustumSide = WhichSide(camera); |
| 142 | |
| 143 | if (positionSide > 0) |
| 144 | { |
| 145 | // Camera origin on positive side of plane. |
| 146 | |
| 147 | if (frustumSide <= 0) |
| 148 | { |
| 149 | // The frustum is on the negative side of the plane or straddles |
| 150 | // the plane. In either case, the negative child is potentially |
| 151 | // visible. |
| 152 | if (negChild) |
| 153 | { |
| 154 | negChild->OnGetVisibleSet(culler, camera, noCull); |
| 155 | } |
| 156 | } |
| 157 | |
| 158 | if (frustumSide == 0) |
| 159 | { |
| 160 | // The frustum straddles the plane. The coplanar child is |
| 161 | // potentially visible. |
| 162 | if (copChild) |
| 163 | { |
| 164 | copChild->OnGetVisibleSet(culler, camera, noCull); |
| 165 | } |
| 166 | } |
| 167 | |
| 168 | if (frustumSide >= 0) |
| 169 | { |
| 170 | // The frustum is on the positive side of the plane or straddles |
| 171 | // the plane. In either case, the positive child is potentially |
| 172 | // visible. |
| 173 | if (posChild) |
| 174 | { |
| 175 | posChild->OnGetVisibleSet(culler, camera, noCull); |
| 176 | } |
| 177 | } |
| 178 | } |
| 179 | else if (positionSide < 0) |
| 180 | { |
| 181 | // Camera origin on negative side of plane. |
| 182 | |
| 183 | if (frustumSide >= 0) |
| 184 | { |
| 185 | // The frustum is on the positive side of the plane or straddles |
| 186 | // the plane. In either case, the positive child is potentially |
| 187 | // visible. |
| 188 | if (posChild) |
nothing calls this directly
no test coverage detected