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/**
* @file llcylinder.cpp
* @brief Draws a cylinder using display lists for speed.
*
* $LicenseInfo:firstyear=2001&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* 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.
*
* 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.
*
* 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
* $/LicenseInfo$
*/
#include "llviewerprecompiledheaders.h"
#include "llcylinder.h"
#include "llerror.h"
#include "math.h"
#include "llmath.h"
#include "noise.h"
#include "v3math.h"
#include "llvertexbuffer.h"
#include "llgl.h"
#include "llglheaders.h"
LLCone gCone;
//
// Cones
//
void LLCone::render(S32 sides)
{
gGL.begin(LLRender::TRIANGLE_FAN);
gGL.vertex3f(0,0,0);
for (U32 i = 0; i < sides; i++)
{
F32 a = (F32) i/sides * F_PI*2.f;
F32 x = cosf(a)*0.5f;
F32 y = sinf(a)*0.5f;
gGL.vertex3f(x,y,0.f);
}
gGL.vertex3f(cosf(0.f)*0.5f, sinf(0.f)*0.5f, 0.f);
gGL.end();
gGL.begin(LLRender::TRIANGLE_FAN);
gGL.vertex3f(0.f, 0.f, 1.f);
for (U32 i = 0; i < sides; i++)
{
F32 a = (F32) i/sides * F_PI*2.f;
F32 x = cosf(a)*0.5f;
F32 y = sinf(a)*0.5f;
gGL.vertex3f(x,y,0.f);
}
gGL.vertex3f(cosf(0.f)*0.5f, sinf(0.f)*0.5f, 0.f);
gGL.end();
}
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