76 lines
1.8 KiB
C++
76 lines
1.8 KiB
C++
/**
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* @file llcylinder.cpp
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* @brief Draws a cylinder using display lists for speed.
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*
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* $LicenseInfo:firstyear=2001&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2010, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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* $/LicenseInfo$
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*/
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#include "llviewerprecompiledheaders.h"
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#include "llcylinder.h"
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#include "llerror.h"
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#include "math.h"
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#include "llmath.h"
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#include "noise.h"
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#include "v3math.h"
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#include "llvertexbuffer.h"
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#include "llgl.h"
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#include "llglheaders.h"
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LLCone gCone;
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//
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// Cones
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//
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void LLCone::render(S32 sides)
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{
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gGL.begin(LLRender::TRIANGLE_FAN);
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gGL.vertex3f(0,0,0);
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for (U32 i = 0; i < sides; i++)
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{
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F32 a = (F32) i/sides * F_PI*2.f;
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F32 x = cosf(a)*0.5f;
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F32 y = sinf(a)*0.5f;
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gGL.vertex3f(x,y,-.5f);
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}
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gGL.vertex3f(cosf(0.f)*0.5f, sinf(0.f)*0.5f, -0.5f);
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gGL.end();
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gGL.begin(LLRender::TRIANGLE_FAN);
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gGL.vertex3f(0.f, 0.f, 0.5f);
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for (U32 i = 0; i < sides; i++)
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{
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F32 a = (F32) i/sides * F_PI*2.f;
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F32 x = cosf(a)*0.5f;
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F32 y = sinf(a)*0.5f;
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gGL.vertex3f(x,y,-0.5f);
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}
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gGL.vertex3f(cosf(0.f)*0.5f, sinf(0.f)*0.5f, -0.5f);
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gGL.end();
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}
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