llvoground.cpp
上传用户:king477883
上传日期:2021-03-01
资源大小:9553k
文件大小:5k
- /**
- * @file llvoground.cpp
- * @brief LLVOGround class implementation
- *
- * $LicenseInfo:firstyear=2001&license=viewergpl$
- *
- * Copyright (c) 2001-2010, Linden Research, Inc.
- *
- * 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
- *
- * 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
- *
- * 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.
- *
- * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
- * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
- * COMPLETENESS OR PERFORMANCE.
- * $/LicenseInfo$
- */
- #include "llviewerprecompiledheaders.h"
- #include "llvoground.h"
- #include "lldrawpoolground.h"
- #include "llviewercontrol.h"
- #include "lldrawable.h"
- #include "llface.h"
- #include "llsky.h"
- #include "llviewercamera.h"
- #include "llviewerregion.h"
- #include "pipeline.h"
- LLVOGround::LLVOGround(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp)
- : LLStaticViewerObject(id, pcode, regionp, TRUE)
- {
- mbCanSelect = FALSE;
- }
- LLVOGround::~LLVOGround()
- {
- }
- BOOL LLVOGround::idleUpdate(LLAgent &agent, LLWorld &world, const F64 &time)
- {
- if (mDead || !(gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_GROUND)))
- {
- return TRUE;
- }
-
- /*if (mDrawable)
- {
- gPipeline.markRebuild(mDrawable, LLDrawable::REBUILD_VOLUME, TRUE);
- }*/
- return TRUE;
- }
- void LLVOGround::updateTextures()
- {
- }
- LLDrawable *LLVOGround::createDrawable(LLPipeline *pipeline)
- {
- pipeline->allocDrawable(this);
- mDrawable->setLit(FALSE);
- mDrawable->setRenderType(LLPipeline::RENDER_TYPE_GROUND);
- LLDrawPoolGround *poolp = (LLDrawPoolGround*) gPipeline.getPool(LLDrawPool::POOL_GROUND);
- mDrawable->addFace(poolp, NULL);
- return mDrawable;
- }
- BOOL LLVOGround::updateGeometry(LLDrawable *drawable)
- {
- LLStrider<LLVector3> verticesp;
- LLStrider<LLVector3> normalsp;
- LLStrider<LLVector2> texCoordsp;
- LLStrider<U16> indicesp;
- S32 index_offset;
- LLFace *face;
- LLDrawPoolGround *poolp = (LLDrawPoolGround*) gPipeline.getPool(LLDrawPool::POOL_GROUND);
- if (drawable->getNumFaces() < 1)
- drawable->addFace(poolp, NULL);
- face = drawable->getFace(0);
-
- if (face->mVertexBuffer.isNull())
- {
- face->setSize(5, 12);
- face->mVertexBuffer = new LLVertexBuffer(LLDrawPoolGround::VERTEX_DATA_MASK, GL_STREAM_DRAW_ARB);
- face->mVertexBuffer->allocateBuffer(face->getGeomCount(), face->getIndicesCount(), TRUE);
- face->setGeomIndex(0);
- face->setIndicesIndex(0);
- }
-
- index_offset = face->getGeometry(verticesp,normalsp,texCoordsp, indicesp);
- if (-1 == index_offset)
- {
- return TRUE;
- }
- ///////////////////////////////////////
- //
- //
- //
- LLVector3 at_dir = LLViewerCamera::getInstance()->getAtAxis();
- at_dir.mV[VZ] = 0.f;
- if (at_dir.normVec() < 0.01)
- {
- // We really don't care, as we're not looking anywhere near the horizon.
- }
- LLVector3 left_dir = LLViewerCamera::getInstance()->getLeftAxis();
- left_dir.mV[VZ] = 0.f;
- left_dir.normVec();
- // Our center top point
- LLColor4 ground_color = gSky.getFogColor();
- ground_color.mV[3] = 1.f;
- face->setFaceColor(ground_color);
-
- *(verticesp++) = LLVector3(64, 64, 0);
- *(verticesp++) = LLVector3(-64, 64, 0);
- *(verticesp++) = LLVector3(-64, -64, 0);
- *(verticesp++) = LLVector3(64, -64, 0);
- *(verticesp++) = LLVector3(0, 0, -1024);
-
-
- // Triangles for each side
- *indicesp++ = index_offset + 0;
- *indicesp++ = index_offset + 1;
- *indicesp++ = index_offset + 4;
- *indicesp++ = index_offset + 1;
- *indicesp++ = index_offset + 2;
- *indicesp++ = index_offset + 4;
- *indicesp++ = index_offset + 2;
- *indicesp++ = index_offset + 3;
- *indicesp++ = index_offset + 4;
- *indicesp++ = index_offset + 3;
- *indicesp++ = index_offset + 0;
- *indicesp++ = index_offset + 4;
- *(texCoordsp++) = LLVector2(0.f, 0.f);
- *(texCoordsp++) = LLVector2(1.f, 0.f);
- *(texCoordsp++) = LLVector2(1.f, 1.f);
- *(texCoordsp++) = LLVector2(0.f, 1.f);
- *(texCoordsp++) = LLVector2(0.5f, 0.5f);
-
- face->mVertexBuffer->setBuffer(0);
- LLPipeline::sCompiles++;
- return TRUE;
- }