diff options
Diffstat (limited to 'indra/newview/llvotree.cpp')
| -rw-r--r-- | indra/newview/llvotree.cpp | 69 |
1 files changed, 38 insertions, 31 deletions
diff --git a/indra/newview/llvotree.cpp b/indra/newview/llvotree.cpp index 0efe6682be..37a974be28 100644 --- a/indra/newview/llvotree.cpp +++ b/indra/newview/llvotree.cpp @@ -2,31 +2,25 @@ * @file llvotree.cpp * @brief LLVOTree class implementation * - * $LicenseInfo:firstyear=2002&license=viewergpl$ - * - * Copyright (c) 2002-2009, Linden Research, Inc. - * + * $LicenseInfo:firstyear=2002&license=viewerlgpl$ * Second Life Viewer Source Code - * The source code in this file ("Source Code") is provided by Linden Lab - * to you under the terms of the GNU General Public License, version 2.0 - * ("GPL"), unless you have obtained a separate licensing agreement - * ("Other License"), formally executed by you and Linden Lab. Terms of - * the GPL can be found in doc/GPL-license.txt in this distribution, or - * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2 + * Copyright (C) 2010, Linden Research, Inc. * - * There are special exceptions to the terms and conditions of the GPL as - * it is applied to this Source Code. View the full text of the exception - * in the file doc/FLOSS-exception.txt in this software distribution, or - * online at - * http://secondlifegrid.net/programs/open_source/licensing/flossexception + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; + * version 2.1 of the License only. * - * By copying, modifying or distributing this software, you acknowledge - * that you have read and understood your obligations described above, - * and agree to abide by those obligations. + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. * - * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO - * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY, - * COMPLETENESS OR PERFORMANCE. + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * + * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA * $/LicenseInfo$ */ @@ -448,22 +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 |