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Diffstat (limited to 'src/glu/sgi/libnurbs/internals/backend.cc')
| -rw-r--r-- | src/glu/sgi/libnurbs/internals/backend.cc | 588 |
1 files changed, 0 insertions, 588 deletions
diff --git a/src/glu/sgi/libnurbs/internals/backend.cc b/src/glu/sgi/libnurbs/internals/backend.cc deleted file mode 100644 index 27b41ebb29e..00000000000 --- a/src/glu/sgi/libnurbs/internals/backend.cc +++ /dev/null @@ -1,588 +0,0 @@ -/* -** License Applicability. Except to the extent portions of this file are -** made subject to an alternative license as permitted in the SGI Free -** Software License B, Version 1.1 (the "License"), the contents of this -** file are subject only to the provisions of the License. You may not use -** this file except in compliance with the License. You may obtain a copy -** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600 -** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at: -** -** http://oss.sgi.com/projects/FreeB -** -** Note that, as provided in the License, the Software is distributed on an -** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS -** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND -** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A -** PARTICULAR PURPOSE, AND NON-INFRINGEMENT. -** -** Original Code. The Original Code is: OpenGL Sample Implementation, -** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics, -** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc. -** Copyright in any portions created by third parties is as indicated -** elsewhere herein. All Rights Reserved. -** -** Additional Notice Provisions: The application programming interfaces -** established by SGI in conjunction with the Original Code are The -** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released -** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version -** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X -** Window System(R) (Version 1.3), released October 19, 1998. This software -** was created using the OpenGL(R) version 1.2.1 Sample Implementation -** published by SGI, but has not been independently verified as being -** compliant with the OpenGL(R) version 1.2.1 Specification. -*/ - -/* - * backend.c++ - * - */ - -/* Bezier surface backend - - interprets display mode (wireframe,shaded,...) -*/ -#include <stdio.h> -#include "glimports.h" -#include "mystdio.h" -#include "backend.h" -#include "basiccrveval.h" -#include "basicsurfeval.h" - -#define NOWIREFRAME - - -/*------------------------------------------------------------------------- - * bgnsurf - preamble to surface definition and evaluations - *------------------------------------------------------------------------- - */ -void -Backend::bgnsurf( int wiretris, int wirequads, long nuid ) -{ -/*#ifndef NOWIREFRAME*/ //need this for old version - wireframetris = wiretris; - wireframequads = wirequads; -/*#endif*/ - - /*in the spec, GLU_DISPLAY_MODE is either - * GLU_FILL - * GLU_OUTLINE_POLY - * GLU_OUTLINE_PATCH. - *In fact, GLU_FLL is has the same effect as - * set GL_FRONT_AND_BACK to be GL_FILL - * and GLU_OUTLINE_POLY is the same as set - * GL_FRONT_AND_BACK to be GL_LINE - *It is more efficient to do this once at the beginning of - *each surface than to do it for each primitive. - * The internal has more options: outline_triangle and outline_quad - *can be seperated. But since this is not in spec, and more importantly, - *this is not so useful, so we don't need to keep this option. - */ - - surfaceEvaluator.bgnmap2f( nuid ); - - if(wiretris) - surfaceEvaluator.polymode(N_MESHLINE); - else - surfaceEvaluator.polymode(N_MESHFILL); -} - -void -Backend::patch( REAL ulo, REAL uhi, REAL vlo, REAL vhi ) -{ - surfaceEvaluator.domain2f( ulo, uhi, vlo, vhi ); -} - -void -Backend::surfbbox( long type, REAL *from, REAL *to ) -{ - surfaceEvaluator.range2f( type, from, to ); -} - -/*------------------------------------------------------------------------- - * surfpts - pass a desription of a surface map - *------------------------------------------------------------------------- - */ -void -Backend::surfpts( - long type, /* geometry, color, texture, normal */ - REAL *pts, /* control points */ - long ustride, /* distance to next point in u direction */ - long vstride, /* distance to next point in v direction */ - int uorder, /* u parametric order */ - int vorder, /* v parametric order */ - REAL ulo, /* u lower bound */ - REAL uhi, /* u upper bound */ - REAL vlo, /* v lower bound */ - REAL vhi ) /* v upper bound */ -{ - surfaceEvaluator.map2f( type,ulo,uhi,ustride,uorder,vlo,vhi,vstride,vorder,pts ); - surfaceEvaluator.enable( type ); -} - -/*------------------------------------------------------------------------- - * surfgrid - define a lattice of points with origin and offset - *------------------------------------------------------------------------- - */ -void -Backend::surfgrid( REAL u0, REAL u1, long nu, REAL v0, REAL v1, long nv ) -{ - surfaceEvaluator.mapgrid2f( nu, u0, u1, nv, v0, v1 ); -} - -/*------------------------------------------------------------------------- - * surfmesh - evaluate a mesh of points on lattice - *------------------------------------------------------------------------- - */ -void -Backend::surfmesh( long u, long v, long n, long m ) -{ -#ifndef NOWIREFRAME - if( wireframequads ) { - long v0, v1; - long u0f = u, u1f = u+n; - long v0f = v, v1f = v+m; - long parity = (u & 1); - - for( v0 = v0f, v1 = v0f++ ; v0<v1f; v0 = v1, v1++ ) { - surfaceEvaluator.bgnline(); - for( long u = u0f; u<=u1f; u++ ) { - if( parity ) { - surfaceEvaluator.evalpoint2i( u, v0 ); - surfaceEvaluator.evalpoint2i( u, v1 ); - } else { - surfaceEvaluator.evalpoint2i( u, v1 ); - surfaceEvaluator.evalpoint2i( u, v0 ); - } - parity = 1 - parity; - } - surfaceEvaluator.endline(); - } - } else { - surfaceEvaluator.mapmesh2f( N_MESHFILL, u, u+n, v, v+m ); - } -#else - if( wireframequads ) { - - surfaceEvaluator.mapmesh2f( N_MESHLINE, u, u+n, v, v+m ); - } else { - - surfaceEvaluator.mapmesh2f( N_MESHFILL, u, u+n, v, v+m ); - } -#endif -} - -/*------------------------------------------------------------------------- - * endsurf - postamble to surface - *------------------------------------------------------------------------- - */ -void -Backend::endsurf( void ) -{ - surfaceEvaluator.endmap2f(); -} - -/***************************************/ -void -Backend::bgntfan( void ) -{ - surfaceEvaluator.bgntfan(); -/* - if(wireframetris) - surfaceEvaluator.polymode( N_MESHLINE ); - else - surfaceEvaluator.polymode( N_MESHFILL ); -*/ -} - -void -Backend::endtfan( void ) -{ - surfaceEvaluator.endtfan(); -} - -void -Backend::bgnqstrip( void ) -{ - surfaceEvaluator.bgnqstrip(); -/* - if(wireframequads) - surfaceEvaluator.polymode( N_MESHLINE ); - else - surfaceEvaluator.polymode( N_MESHFILL ); -*/ -} - -void -Backend::endqstrip( void ) -{ - surfaceEvaluator.endqstrip(); -} - -void -Backend::evalUStrip(int n_upper, REAL v_upper, REAL* upper_val, - int n_lower, REAL v_lower, REAL* lower_val - ) -{ - surfaceEvaluator.evalUStrip(n_upper, v_upper, upper_val, - n_lower, v_lower, lower_val); -} - -void -Backend::evalVStrip(int n_left, REAL u_left, REAL* left_val, - int n_right, REAL u_right, REAL* right_val - ) -{ - surfaceEvaluator.evalVStrip(n_left, u_left, left_val, - n_right, u_right, right_val); -} - -/***************************************/ - - -/*------------------------------------------------------------------------- - * bgntmesh - preamble to a triangle mesh - *------------------------------------------------------------------------- - */ -void -Backend::bgntmesh( const char * ) -{ -#ifndef NOWIREFRAME - - meshindex = 0; /* I think these need to be initialized to zero */ - npts = 0; - - if( !wireframetris ) { - surfaceEvaluator.bgntmesh(); - } -#else - - if( wireframetris ) { - surfaceEvaluator.bgntmesh(); - surfaceEvaluator.polymode( N_MESHLINE ); - } else { - surfaceEvaluator.bgntmesh(); - surfaceEvaluator.polymode( N_MESHFILL ); - } -#endif -} - -void -Backend::tmeshvert( GridTrimVertex *v ) -{ - if( v->isGridVert() ) { - tmeshvert( v->g ); - } else { - tmeshvert( v->t ); - } -} - -void -Backend::tmeshvertNOGE(TrimVertex *t) -{ -// surfaceEvaluator.inDoEvalCoord2NOGE( t->param[0], t->param[1], temp, ttt); -#ifdef USE_OPTTT - surfaceEvaluator.inDoEvalCoord2NOGE( t->param[0], t->param[1], t->cache_point, t->cache_normal); -#endif -} - -//opt for a line with the same u. -void -Backend::tmeshvertNOGE_BU(TrimVertex *t) -{ -#ifdef USE_OPTTT - surfaceEvaluator.inDoEvalCoord2NOGE_BU( t->param[0], t->param[1], t->cache_point, t->cache_normal); -#endif -} - -//opt for a line with the same v. -void -Backend::tmeshvertNOGE_BV(TrimVertex *t) -{ -#ifdef USE_OPTTT - surfaceEvaluator.inDoEvalCoord2NOGE_BV( t->param[0], t->param[1], t->cache_point, t->cache_normal); -#endif -} - -void -Backend::preEvaluateBU(REAL u) -{ - surfaceEvaluator.inPreEvaluateBU_intfac(u); -} - -void -Backend::preEvaluateBV(REAL v) -{ - surfaceEvaluator.inPreEvaluateBV_intfac(v); -} - - -/*------------------------------------------------------------------------- - * tmeshvert - evaluate a point on a triangle mesh - *------------------------------------------------------------------------- - */ -void -Backend::tmeshvert( TrimVertex *t ) -{ - -#ifndef NOWIREFRAME - const long nuid = t->nuid; -#endif - const REAL u = t->param[0]; - const REAL v = t->param[1]; - -#ifndef NOWIREFRAME - npts++; - if( wireframetris ) { - if( npts >= 3 ) { - surfaceEvaluator.bgnclosedline(); - if( mesh[0][2] == 0 ) - surfaceEvaluator.evalcoord2f( mesh[0][3], mesh[0][0], mesh[0][1] ); - else - surfaceEvaluator.evalpoint2i( (long) mesh[0][0], (long) mesh[0][1] ); - if( mesh[1][2] == 0 ) - surfaceEvaluator.evalcoord2f( mesh[1][3], mesh[1][0], mesh[1][1] ); - else - surfaceEvaluator.evalpoint2i( (long) mesh[1][0], (long) mesh[1][1] ); - surfaceEvaluator.evalcoord2f( nuid, u, v ); - surfaceEvaluator.endclosedline(); - } - mesh[meshindex][0] = u; - mesh[meshindex][1] = v; - mesh[meshindex][2] = 0; - mesh[meshindex][3] = nuid; - meshindex = (meshindex+1) % 2; - } else { - surfaceEvaluator.evalcoord2f( nuid, u, v ); - } -#else - - surfaceEvaluator.evalcoord2f( 0, u, v ); -//for uninitial memory read surfaceEvaluator.evalcoord2f( nuid, u, v ); -#endif -} - -//the same as tmeshvert(trimvertex), for efficiency purpose -void -Backend::tmeshvert( REAL u, REAL v ) -{ -#ifndef NOWIREFRAME - const long nuid = 0; - - npts++; - if( wireframetris ) { - if( npts >= 3 ) { - surfaceEvaluator.bgnclosedline(); - if( mesh[0][2] == 0 ) - surfaceEvaluator.evalcoord2f( mesh[0][3], mesh[0][0], mesh[0][1] ); - else - surfaceEvaluator.evalpoint2i( (long) mesh[0][0], (long) mesh[0][1] ); - if( mesh[1][2] == 0 ) - surfaceEvaluator.evalcoord2f( mesh[1][3], mesh[1][0], mesh[1][1] ); - else - surfaceEvaluator.evalpoint2i( (long) mesh[1][0], (long) mesh[1][1] ); - surfaceEvaluator.evalcoord2f( nuid, u, v ); - surfaceEvaluator.endclosedline(); - } - mesh[meshindex][0] = u; - mesh[meshindex][1] = v; - mesh[meshindex][2] = 0; - mesh[meshindex][3] = nuid; - meshindex = (meshindex+1) % 2; - } else { - surfaceEvaluator.evalcoord2f( nuid, u, v ); - } -#else - - surfaceEvaluator.evalcoord2f( 0, u, v ); -#endif -} - -/*------------------------------------------------------------------------- - * tmeshvert - evaluate a grid point of a triangle mesh - *------------------------------------------------------------------------- - */ -void -Backend::tmeshvert( GridVertex *g ) -{ - const long u = g->gparam[0]; - const long v = g->gparam[1]; - -#ifndef NOWIREFRAME - npts++; - if( wireframetris ) { - if( npts >= 3 ) { - surfaceEvaluator.bgnclosedline(); - if( mesh[0][2] == 0 ) - surfaceEvaluator.evalcoord2f( (long) mesh[0][3], mesh[0][0], mesh[0][1] ); - else - surfaceEvaluator.evalpoint2i( (long) mesh[0][0], (long) mesh[0][1] ); - if( mesh[1][2] == 0 ) - surfaceEvaluator.evalcoord2f( (long) mesh[1][3], mesh[1][0], mesh[1][1] ); - else - surfaceEvaluator.evalpoint2i( (long) mesh[1][0], (long) mesh[1][1] ); - surfaceEvaluator.evalpoint2i( u, v ); - surfaceEvaluator.endclosedline(); - } - mesh[meshindex][0] = u; - mesh[meshindex][1] = v; - mesh[meshindex][2] = 1; - meshindex = (meshindex+1) % 2; - } else { - surfaceEvaluator.evalpoint2i( u, v ); - } -#else - surfaceEvaluator.evalpoint2i( u, v ); -#endif -} - -/*------------------------------------------------------------------------- - * swaptmesh - perform a swap of the triangle mesh pointers - *------------------------------------------------------------------------- - */ -void -Backend::swaptmesh( void ) -{ -#ifndef NOWIREFRAME - if( wireframetris ) { - meshindex = 1 - meshindex; - } else { - surfaceEvaluator.swaptmesh(); - } -#else - surfaceEvaluator.swaptmesh(); -#endif -} - -/*------------------------------------------------------------------------- - * endtmesh - postamble to triangle mesh - *------------------------------------------------------------------------- - */ -void -Backend::endtmesh( void ) -{ -#ifndef NOWIREFRAME - if( ! wireframetris ) - surfaceEvaluator.endtmesh(); -#else - surfaceEvaluator.endtmesh(); -/* surfaceEvaluator.polymode( N_MESHFILL );*/ -#endif -} - - -/*------------------------------------------------------------------------- - * bgnoutline - preamble to outlined rendering - *------------------------------------------------------------------------- - */ -void -Backend::bgnoutline( void ) -{ - surfaceEvaluator.bgnline(); -} - -/*------------------------------------------------------------------------- - * linevert - evaluate a point on an outlined contour - *------------------------------------------------------------------------- - */ -void -Backend::linevert( TrimVertex *t ) -{ - surfaceEvaluator.evalcoord2f( t->nuid, t->param[0], t->param[1] ); -} - -/*------------------------------------------------------------------------- - * linevert - evaluate a grid point of an outlined contour - *------------------------------------------------------------------------- - */ -void -Backend::linevert( GridVertex *g ) -{ - surfaceEvaluator.evalpoint2i( g->gparam[0], g->gparam[1] ); -} - -/*------------------------------------------------------------------------- - * endoutline - postamble to outlined rendering - *------------------------------------------------------------------------- - */ -void -Backend::endoutline( void ) -{ - surfaceEvaluator.endline(); -} - -/*------------------------------------------------------------------------- - * triangle - output a triangle - *------------------------------------------------------------------------- - */ -void -Backend::triangle( TrimVertex *a, TrimVertex *b, TrimVertex *c ) -{ -/* bgntmesh( "spittriangle" );*/ - bgntfan(); - tmeshvert( a ); - tmeshvert( b ); - tmeshvert( c ); - endtfan(); -/* endtmesh();*/ -} - -void -Backend::bgncurv( void ) -{ - curveEvaluator.bgnmap1f( 0 ); -} - -void -Backend::segment( REAL ulo, REAL uhi ) -{ - curveEvaluator.domain1f( ulo, uhi ); -} - -void -Backend::curvpts( - long type, /* geometry, color, texture, normal */ - REAL *pts, /* control points */ - long stride, /* distance to next point */ - int order, /* parametric order */ - REAL ulo, /* lower parametric bound */ - REAL uhi ) /* upper parametric bound */ - -{ - curveEvaluator.map1f( type, ulo, uhi, stride, order, pts ); - curveEvaluator.enable( type ); -} - -void -Backend::curvgrid( REAL u0, REAL u1, long nu ) -{ - curveEvaluator.mapgrid1f( nu, u0, u1 ); -} - -void -Backend::curvmesh( long from, long n ) -{ - curveEvaluator.mapmesh1f( N_MESHFILL, from, from+n ); -} - -void -Backend::curvpt(REAL u) -{ - curveEvaluator.evalcoord1f( 0, u ); -} - -void -Backend::bgnline( void ) -{ - curveEvaluator.bgnline(); -} - -void -Backend::endline( void ) -{ - curveEvaluator.endline(); -} - -void -Backend::endcurv( void ) -{ - curveEvaluator.endmap1f(); -} |