mirror of
https://github.com/gnif/LookingGlass.git
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66 lines
2.1 KiB
C
66 lines
2.1 KiB
C
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/*
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Looking Glass - KVM FrameRelay (KVMFR) Client
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Copyright (C) 2017 Geoffrey McRae <geoff@hostfission.com>
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https://looking-glass.hostfission.com
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; either version 2 of the License, or (at your option) any later
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version.
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This program is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "draw.h"
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#include <stdlib.h>
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#include <math.h>
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void egl_draw_torus(EGL_Model * model, unsigned int pts, float x, float y, float inner, float outer)
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{
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GLfloat * v = (GLfloat *)malloc(sizeof(GLfloat) * (pts + 1) * 6);
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GLfloat * dst = v;
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for(unsigned int i = 0; i <= pts; ++i)
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{
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const float angle = (i / (float)pts) * M_PI * 2.0f;
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const float c = cos(angle);
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const float s = sin(angle);
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*dst = x + (inner * c); ++dst;
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*dst = y + (inner * s); ++dst;
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*dst = 0.0f; ++dst;
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*dst = x + (outer * c); ++dst;
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*dst = y + (outer * s); ++dst;
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*dst = 0.0f; ++dst;
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}
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egl_model_add_verticies(model, v, NULL, (pts + 1) * 2);
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free(v);
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}
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void egl_draw_torus_arc(EGL_Model * model, unsigned int pts, float x, float y, float inner, float outer, float s, float e)
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{
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GLfloat * v = (GLfloat *)malloc(sizeof(GLfloat) * (pts + 1) * 6);
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GLfloat * dst = v;
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for(unsigned int i = 0; i <= pts; ++i)
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{
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const float angle = s + ((i / (float)pts) * e);
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const float c = cos(angle);
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const float s = sin(angle);
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*dst = x + (inner * c); ++dst;
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*dst = y + (inner * s); ++dst;
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*dst = 0.0f; ++dst;
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*dst = x + (outer * c); ++dst;
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*dst = y + (outer * s); ++dst;
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*dst = 0.0f; ++dst;
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}
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egl_model_add_verticies(model, v, NULL, (pts + 1) * 2);
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free(v);
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}
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