forked from valve/halflife-sdk
154 lines
2.5 KiB
C
154 lines
2.5 KiB
C
/***
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*
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* Copyright (c) 1996-2001, Valve LLC. All rights reserved.
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*
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* This product contains software technology licensed from Id
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* Software, Inc. ("Id Technology"). Id Technology (c) 1996 Id Software, Inc.
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* All Rights Reserved.
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*
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****/
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#include <windows.h>
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#include <GL/gl.h>
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#include <GL/glu.h>
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#include <GL/glaux.h>
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#include "csg.h"
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// can't use the glvertex3fv functions, because the vec3_t fields
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// could be either floats or doubles, depending on DOUBLEVEC_T
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qboolean drawflag;
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vec3_t draw_mins, draw_maxs;
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#define WIN_SIZE 512
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void InitWindow (void)
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{
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auxInitDisplayMode (AUX_SINGLE | AUX_RGB);
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auxInitPosition (0, 0, WIN_SIZE, WIN_SIZE);
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auxInitWindow ("qcsg");
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}
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void Draw_ClearWindow (void)
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{
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static int init;
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int w, h, g;
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vec_t mx, my;
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if (!drawflag)
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return;
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if (!init)
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{
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init = true;
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InitWindow ();
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}
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glClearColor (1,0.8,0.8,0);
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glClear (GL_COLOR_BUFFER_BIT);
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w = (draw_maxs[0] - draw_mins[0]);
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h = (draw_maxs[1] - draw_mins[1]);
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mx = draw_mins[0] + w/2;
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my = draw_mins[1] + h/2;
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g = w > h ? w : h;
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glLoadIdentity ();
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gluPerspective (90, 1, 2, 16384);
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gluLookAt (mx, my, draw_maxs[2] + g/2, mx , my, draw_maxs[2], 0, 1, 0);
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glColor3f (0,0,0);
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// glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
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glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
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glDisable (GL_DEPTH_TEST);
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glEnable (GL_BLEND);
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glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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#if 0
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glColor4f (1,0,0,0.5);
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glBegin (GL_POLYGON);
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glVertex3f (0, 500, 0);
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glVertex3f (0, 900, 0);
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glVertex3f (0, 900, 100);
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glVertex3f (0, 500, 100);
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glEnd ();
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#endif
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glFlush ();
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}
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void Draw_SetRed (void)
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{
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if (!drawflag)
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return;
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glColor3f (1,0,0);
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}
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void Draw_SetGrey (void)
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{
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if (!drawflag)
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return;
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glColor3f (0.5,0.5,0.5);
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}
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void Draw_SetBlack (void)
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{
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if (!drawflag)
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return;
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glColor3f (0,0,0);
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}
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void DrawWinding (winding_t *w)
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{
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int i;
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if (!drawflag)
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return;
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glColor4f (0,0,0,0.5);
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glBegin (GL_LINE_LOOP);
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for (i=0 ; i<w->numpoints ; i++)
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glVertex3f (w->p[i][0],w->p[i][1],w->p[i][2] );
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glEnd ();
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glColor4f (0,1,0,0.3);
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glBegin (GL_POLYGON);
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for (i=0 ; i<w->numpoints ; i++)
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glVertex3f (w->p[i][0],w->p[i][1],w->p[i][2] );
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glEnd ();
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glFlush ();
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}
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void DrawAuxWinding (winding_t *w)
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{
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int i;
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if (!drawflag)
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return;
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glColor4f (0,0,0,0.5);
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glBegin (GL_LINE_LOOP);
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for (i=0 ; i<w->numpoints ; i++)
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glVertex3f (w->p[i][0],w->p[i][1],w->p[i][2] );
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glEnd ();
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glColor4f (1,0,0,0.3);
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glBegin (GL_POLYGON);
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for (i=0 ; i<w->numpoints ; i++)
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glVertex3f (w->p[i][0],w->p[i][1],w->p[i][2] );
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glEnd ();
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glFlush ();
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}
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