diff options
Diffstat (limited to 'indra/newview/llviewerparceloverlay.cpp')
| -rw-r--r-- | indra/newview/llviewerparceloverlay.cpp | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/indra/newview/llviewerparceloverlay.cpp b/indra/newview/llviewerparceloverlay.cpp index eff16b6a6e..e619b89f9b 100644 --- a/indra/newview/llviewerparceloverlay.cpp +++ b/indra/newview/llviewerparceloverlay.cpp @@ -201,6 +201,65 @@ bool LLViewerParcelOverlay::encroachesOnUnowned(const std::vector<LLBBox>& boxes return false; } +bool LLViewerParcelOverlay::encroachesOnNearbyParcel(const std::vector<LLBBox>& boxes) const +{ + // boxes are expected to already be axis aligned + for (U32 i = 0; i < boxes.size(); ++i) + { + LLVector3 min = boxes[i].getMinAgent(); + LLVector3 max = boxes[i].getMaxAgent(); + + // If an object crosses region borders it crosses a parcel + if ( min.mV[VX] < 0 + || min.mV[VY] < 0 + || max.mV[VX] > REGION_WIDTH_METERS + || max.mV[VY] > REGION_WIDTH_METERS) + { + return true; + } + + S32 left = S32(llclamp((min.mV[VX] / PARCEL_GRID_STEP_METERS), 0.f, REGION_WIDTH_METERS - 1)); + S32 right = S32(llclamp((max.mV[VX] / PARCEL_GRID_STEP_METERS), 0.f, REGION_WIDTH_METERS - 1)); + S32 bottom = S32(llclamp((min.mV[VY] / PARCEL_GRID_STEP_METERS), 0.f, REGION_WIDTH_METERS - 1)); + S32 top = S32(llclamp((max.mV[VY] / PARCEL_GRID_STEP_METERS), 0.f, REGION_WIDTH_METERS - 1)); + + const S32 GRIDS_PER_EDGE = mParcelGridsPerEdge; + + for (S32 row = bottom; row <= top; row++) + { + for (S32 col = left; col <= right; col++) + { + // This is not the rightmost column + if (col < GRIDS_PER_EDGE-1) + { + U8 east_overlay = mOwnership[row*GRIDS_PER_EDGE+col+1]; + // If the column to the east of the current one marks + // the other parcel's west edge and the box extends + // to the west it crosses the parcel border. + if ((east_overlay & PARCEL_WEST_LINE) && col < right) + { + return true; + } + } + + // This is not the topmost column + if (row < GRIDS_PER_EDGE-1) + { + U8 north_overlay = mOwnership[(row+1)*GRIDS_PER_EDGE+col]; + // If the row to the north of the current one marks + // the other parcel's south edge and the box extends + // to the south it crosses the parcel border. + if ((north_overlay & PARCEL_SOUTH_LINE) && row < top) + { + return true; + } + } + } + } + } + return false; +} + BOOL LLViewerParcelOverlay::isSoundLocal(const LLVector3& pos) const { S32 row = S32(pos.mV[VY] / PARCEL_GRID_STEP_METERS); |