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Length: 6575 (0x19af)
Types: TextFile
Names: »multisurf.c«
└─⟦8648bda34⟧ Bits:30007244 EUUGD5_II: X11R5
└─⟦2ca9b63e1⟧ »./contrib-1/contrib-1.00«
└─⟦a8392fb20⟧
└─⟦this⟧ »contrib/examples/PEX/multisurf.c«
/* $XConsortium: multisurf.c,v 5.1 91/02/16 09:32:26 rws Exp $ */
/***********************************************************
Copyright (c) 1991 by Sun Microsystems, Inc. and the X Consortium.
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the names of Sun Microsystems,
the X Consortium, and MIT not be used in advertising or publicity
pertaining to distribution of the software without specific, written
prior permission.
SUN MICROSYSTEMS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT
SHALL SUN MICROSYSTEMS BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.
******************************************************************/
#define PI 3.141592654
#include "phigs/phigs.h"
main(argc,argv)
int argc; char ** argv;
{
static Pview_map3 view_map = {
{ 0.0, 1.0, 0.0, 1.0},
{ 0.0, .5, 0.5, 1.0, 0.0, 1.0},
PTYPE_PARAL,
{ 0.5, 0.5, -20.0},
0.0,
0.0,
1.0
};
static Pview_map3 view_map1 = {
{ 0.0, 1.0, 0.0, 1.0},
{ 0.5, 1.0, 0.5, 1.0, 0.0, 1.0},
PTYPE_PARAL,
{ 0.5, 0.5, -20.0},
0.0,
0.0,
1.0
};
static Pview_map3 view_map2 = {
{ 0.0, 1.0, 0.0, 1.0},
{ 0.0, .5, 0.0, 0.5, 0.0, 1.0},
PTYPE_PARAL,
{ 0.5, 0.5, -20.0},
0.0,
0.0,
1.0
};
static Pview_map3 view_map3 = {
{ 0.0, 1.0, 0.0, 1.0},
{ 0.5, 1.0, 0.0, 0.5, 0.0, 1.0},
PTYPE_PARAL,
{ 0.5, 0.5, -20.0},
0.0,
0.0,
1.0
};
static Ppoint3 vrp = {0., 0., 0 }; /* origin */
static Pvec3 vpn = {0.0, 0.0, 1.0 }; /* view plane normal */
static Pvec3 vup = {0.0, 1.0, 0.0 }; /* view up vector */
Pview_rep3 vrep; /* view structure */
Pint err;
Pint uorder = 4,
vorder = 4;
Pfloat_list uknots,
vknots;
static int unumknots = 20,
vnumknots = 20;
static Pfloat kpts[] = { 1.0, 2.0, 3.0, 4.0, 5.0,
6.0, 7.0, 8.0, 9.0, 10.0,
11.0, 12.0, 13.0, 14.0, 15.0,
16.0, 17.0, 18.0, 19.0, 20.0 };
Prational rationality = PNON_RATIONAL;
Ppoint_grid34 grid;
static Ppoint3 cpts[] = {
0.2,0.5,0.2, 0.4,0.5,0.2, 0.6,0.5,0.2, 0.8,0.5,0.2,
0.2,0.5,0.4, 0.4,0.7,0.4, 0.6,0.3,0.4, 0.8,0.5,0.4,
0.2,0.5,0.6, 0.4,0.3,0.6, 0.6,0.7,0.6, 0.8,0.5,0.6,
0.2,0.5,0.8, 0.4,0.5,0.8, 0.6,0.5,0.8, 0.8,0.5,0.8,
};
static Ppoint trim_curve_cpts[] = {
4.5, 4.25, 1.0,
4.5, 4.25, 1.0,
4.625, 4.25, 1.0,
4.75, 4.375, 1.0,
4.75, 4.5, 1.0,
4.75, 4.625, 1.0,
4.625, 4.75, 1.0,
4.5, 4.75, 1.0,
4.375, 4.75, 1.0,
4.25, 4.625, 1.0,
4.25, 4.5, 1.0,
4.25, 4.375, 1.0,
4.375, 4.25, 1.0,
4.5, 4.25, 1.0,
4.5, 4.25, 1.0
};
static Pfloat_list trim_knot_list = {
19, /* number of knots */
kpts /* knot list */
};
Ppoint_list23 trim_curve_points;
Ptrimcurve_list trim_curve_list;
Ptrimcurve trim_curves[4];
Pint curve_approx_type
= PCURV_CONSTANT_PARAMETRIC_BETWEEN_KNOTS;
Pfloat ucurve_approx_tolerance = 10.0,
vcurve_approx_tolerance = 10.0;
Ppoint3 pt;
Pvec3 shift;
Pfloat x_ang, y_ang, z_ang;
Pvec3 scale;
Pmatrix3 bldmat;
popen_phigs(NULL,0);
popen_ws(1,NULL,phigs_ws_type_x_tool);
/* set up views */
vrep.clip_limit = view_map.vp;
vrep.xy_clip = PIND_NO_CLIP;
vrep.back_clip = PIND_NO_CLIP;
vrep.front_clip = PIND_NO_CLIP;
peval_view_ori_matrix3( &vrp, &vpn, &vup, &err, vrep.ori_matrix);
peval_view_map_matrix3(&view_map, &err, vrep.map_matrix);
pset_view_rep3( 1, 1, &vrep);
peval_view_map_matrix3(&view_map1, &err, vrep.map_matrix);
pset_view_rep3( 1, 2, &vrep);
peval_view_map_matrix3(&view_map2, &err, vrep.map_matrix);
pset_view_rep3( 1, 3, &vrep);
peval_view_map_matrix3(&view_map3, &err, vrep.map_matrix);
pset_view_rep3( 1, 4, &vrep);
/* render path */
popen_struct(1);
trim_curve_points.num_points = 15;
trim_curve_points.points.point2d = trim_curve_cpts;
trim_curve_list.num_curves = 1;
trim_curve_list.curves = trim_curves;
trim_curves[0].visible = PEDGE_ON; /* visibility */
trim_curves[0].rationality = PRATIONAL; /* rational curve */
trim_curves[0].order = 4; /* cubic curve */
trim_curves[0].approx_type = PCURV_WS_DEP; /* approx type (1) */
trim_curves[0].approx_val = 1.0; /* approx tolerance */
trim_curves[0].knots = trim_knot_list; /* trim curve knots */
trim_curves[0].tmin = 4.0;
trim_curves[0].tmax = 16.0; /* parameter range */
trim_curves[0].cpts = trim_curve_points; /* control points */
grid.num_points.u_dim = 4;
grid.num_points.v_dim = 4;
grid.points.point3d = cpts;
uknots.num_floats = grid.num_points.u_dim + uorder;
uknots.floats = kpts;
vknots.num_floats = grid.num_points.v_dim + vorder;
vknots.floats = kpts;
pset_surf_approx(curve_approx_type,
ucurve_approx_tolerance, vcurve_approx_tolerance);
pset_int_style(PSTYLE_SOLID);
pset_view_ind(1);
pset_int_colr_ind(2);
pnuni_bsp_surf( uorder, vorder,
&uknots, &vknots,
rationality,
&grid,
1, &trim_curve_list);
pt.x = 0.5; pt.y = 0.5; pt.z = 0.5;
shift.delta_x = 0; shift.delta_y = 0; shift.delta_z = 0;
scale.delta_x = 1.0; scale.delta_y = 1.0; scale.delta_z = 1.0;
x_ang = 2.0*PI/4.0; y_ang = 0.0; z_ang = 0.0;
pbuild_tran_matrix3( &pt, &shift, x_ang, y_ang, z_ang,
&scale, &err, bldmat);
pset_local_tran3( bldmat, PTYPE_REPLACE);
pset_view_ind(2);
pset_int_colr_ind(3);
pnuni_bsp_surf( uorder, vorder,
&uknots, &vknots,
rationality,
&grid,
1, &trim_curve_list);
pset_view_ind(3);
pset_int_colr_ind(4);
pnuni_bsp_surf( uorder, vorder,
&uknots, &vknots,
rationality,
&grid,
1, &trim_curve_list);
pset_view_ind(4);
pset_int_colr_ind(5);
pnuni_bsp_surf( uorder, vorder,
&uknots, &vknots,
rationality,
&grid,
1, &trim_curve_list);
ppost_struct(1,1,1.0);
printf("should now see some patches...");
getchar();
}