From e416840f85dc4a367894036b9fe483f17d959c54 Mon Sep 17 00:00:00 2001 From: Tofu Linden Date: Tue, 24 Aug 2010 19:22:00 +0100 Subject: Backed out changeset c3d41f18ce2b back-out the back-out for this branch. yay. --- indra/newview/llvotree.cpp | 33 +++++++++++++++++++++++---------- 1 file changed, 23 insertions(+), 10 deletions(-) (limited to 'indra/newview/llvotree.cpp') diff --git a/indra/newview/llvotree.cpp b/indra/newview/llvotree.cpp index 3e0c65abff..37a974be28 100644 --- a/indra/newview/llvotree.cpp +++ b/indra/newview/llvotree.cpp @@ -442,22 +442,35 @@ void LLVOTree::render(LLAgent &agent) void LLVOTree::setPixelAreaAndAngle(LLAgent &agent) { - // First calculate values as for any other object (for mAppAngle) - LLViewerObject::setPixelAreaAndAngle(agent); - - // Re-calculate mPixelArea accurately + LLVector3 center = getPositionAgent();//center of tree. + LLVector3 viewer_pos_agent = gAgentCamera.getCameraPositionAgent(); + LLVector3 lookAt = center - viewer_pos_agent; + F32 dist = lookAt.normVec() ; + F32 cos_angle_to_view_dir = lookAt * LLViewerCamera::getInstance()->getXAxis() ; - // This should be the camera's center, as soon as we move to all region-local. - LLVector3 relative_position = getPositionAgent() - gAgentCamera.getCameraPositionAgent(); - F32 range_squared = relative_position.lengthSquared() ; + F32 range = dist - getMinScale()/2; + if (range < F_ALMOST_ZERO || isHUDAttachment()) // range == zero + { + mAppAngle = 180.f; + } + else + { + mAppAngle = (F32) atan2( getMaxScale(), range) * RAD_TO_DEG; + } F32 max_scale = mBillboardScale * getMaxScale(); F32 area = max_scale * (max_scale*mBillboardRatio); - // Compute pixels per meter at the given range - F32 pixels_per_meter = LLViewerCamera::getInstance()->getViewHeightInPixels() / tan(LLViewerCamera::getInstance()->getView()); + F32 pixels_per_meter = LLViewerCamera::getInstance()->getViewHeightInPixels() / (tan(LLViewerCamera::getInstance()->getView()) * dist); + mPixelArea = pixels_per_meter * pixels_per_meter * area ; + + F32 importance = LLFace::calcImportanceToCamera(cos_angle_to_view_dir, dist) ; + mPixelArea = LLFace::adjustPixelArea(importance, mPixelArea) ; + if (mPixelArea > LLViewerCamera::getInstance()->getScreenPixelArea()) + { + mAppAngle = 180.f; + } - mPixelArea = (pixels_per_meter) * (pixels_per_meter) * area / range_squared; #if 0 // mAppAngle is a bit of voodoo; // use the one calculated LLViewerObject::setPixelAreaAndAngle above -- cgit v1.3