You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
87 lines
2.2 KiB
87 lines
2.2 KiB
/**************************************************************************
|
|
* *
|
|
* Copyright (C) 1992, Silicon Graphics, Inc. *
|
|
* *
|
|
* These coded instructions, statements, and computer programs contain *
|
|
* unpublished proprietary information of Silicon Graphics, Inc., and *
|
|
* are protected by Federal copyright law. They may not be disclosed *
|
|
* to third parties or copied or duplicated in any form, in whole or *
|
|
* in part, without the prior written consent of Silicon Graphics, Inc. *
|
|
* *
|
|
**************************************************************************/
|
|
|
|
/*
|
|
* curvelist.c++ - $Revision: 1.1 $
|
|
* Derrick Burns - 1991
|
|
*/
|
|
|
|
#include "glimport.h"
|
|
#include "myassert.h"
|
|
#include "mystdio.h"
|
|
#include "quilt.h"
|
|
#include "curvelis.h"
|
|
#include "curve.h"
|
|
#include "nurbscon.h"
|
|
#include "types.h"
|
|
|
|
Curvelist::Curvelist( Quilt *quilts, REAL pta, REAL ptb )
|
|
{
|
|
curve = 0;
|
|
for( Quilt *q = quilts; q; q = q->next )
|
|
curve = new Curve( q, pta, ptb, curve );
|
|
range[0] = pta;
|
|
range[1] = ptb;
|
|
range[2] = ptb - pta;
|
|
}
|
|
|
|
Curvelist::Curvelist( Curvelist &upper, REAL value )
|
|
{
|
|
Curvelist &lower = *this;
|
|
curve = 0;
|
|
for( Curve *c = upper.curve; c; c = c->next )
|
|
curve = new Curve( *c, value, curve );
|
|
|
|
lower.range[0] = upper.range[0];
|
|
lower.range[1] = value;
|
|
lower.range[2] = value - upper.range[0];
|
|
upper.range[0] = value;
|
|
upper.range[2] = upper.range[1] - value;
|
|
}
|
|
|
|
Curvelist::~Curvelist()
|
|
{
|
|
while( curve ) {
|
|
Curve *c = curve;
|
|
curve = curve->next;
|
|
delete c;
|
|
}
|
|
}
|
|
|
|
int
|
|
Curvelist::cullCheck( void )
|
|
{
|
|
for( Curve *c = curve; c; c = c->next )
|
|
if( c->cullCheck() == CULL_TRIVIAL_REJECT )
|
|
return CULL_TRIVIAL_REJECT;
|
|
return CULL_ACCEPT;
|
|
}
|
|
|
|
void
|
|
Curvelist::getstepsize( void )
|
|
{
|
|
stepsize = range[2];
|
|
for( Curve *c = curve; c; c = c->next ) {
|
|
c->getstepsize();
|
|
c->clamp();
|
|
stepsize = ((c->stepsize < stepsize) ? c->stepsize : stepsize);
|
|
if( c->needsSamplingSubdivision() ) break;
|
|
}
|
|
needsSubdivision = ( c ) ? 1 : 0;
|
|
}
|
|
|
|
int
|
|
Curvelist::needsSamplingSubdivision( void )
|
|
{
|
|
return needsSubdivision;
|
|
}
|
|
|