/*!
\brief Change z-exag value
\param data nviz data
\param exag exag value
\return 1
*/
int Nviz_change_exag(nv_data * data, double exag)
{
double temp;
G_debug(1, "Nviz_change_exag(): value = %f", exag);
temp = GS_global_exag();
if (exag != temp) {
GS_set_global_exag(exag);
Nviz_update_ranges(data);
/* Nviz_draw_quick(data); */
}
return 1;
}
/*!
\brief Load 3dview
\param vname view name
\param gv pointer to geoview struct
\param gd pointer to geodisplay struct
\param w current window
\param defsurf default geosurf struct
\return 1
*/
int Gs_load_3dview(const char *vname, geoview * gv, geodisplay * gd,
struct Cell_head *w, geosurf * defsurf)
{
const char *mapset;
struct G_3dview v;
int ret = -1;
float pt[3];
mapset = G_find_file2("3d.view", vname, "");
if (mapset != NULL) {
ret = G_get_3dview(vname, mapset, &v);
}
if (ret >= 0) {
if (strcmp((v.pgm_id), "Nvision-ALPHA!")) {
G_warning(_("View not saved by this program,"
"there may be some inconsistancies"));
}
/* set poly and mesh resolutions */
v.mesh_freq = (int)(v.mesh_freq * v.vwin.ns_res / w->ns_res);
v.poly_freq = (int)(v.poly_freq * v.vwin.ns_res / w->ns_res);
/* Set To and FROM positions */
/* TO */
pt[0] = (v.from_to[TO][X] - w->west) - w->ew_res / 2.;
pt[1] = (v.from_to[TO][Y] - w->south) - w->ns_res / 2.;
pt[2] = v.from_to[TO][Z];
GS_set_focus(pt);
/* FROM */
pt[0] = (float)v.from_to[FROM][X];
pt[1] = (float)v.from_to[FROM][Y];
pt[2] = (float)v.from_to[FROM][Z];
GS_moveto_real(pt);
if (defsurf) {
int dmode = 0;
GS_setall_drawres(v.poly_freq, v.poly_freq,
v.mesh_freq, v.mesh_freq);
while (v.display_type >= 10) {
/* globe stuff not used */
v.display_type -= 10;
}
/* set drawing modes */
if (v.colorgrid) {
dmode |= DM_COL_WIRE;
}
if (v.shading) {
dmode |= DM_GOURAUD;
}
switch (v.display_type) {
case 1:
dmode |= DM_WIRE;
break;
case 2:
dmode |= DM_POLY;
break;
case 3:
dmode |= DM_WIRE_POLY;
break;
}
GS_setall_drawmode(dmode);
/* should also set nozeros here */
}
/* set exaggeration */
if (v.exag)
GS_set_global_exag(v.exag);
/* Set FOV */
if (v.fov) {
GS_set_fov((int)
(v.fov > 0 ? v.fov * 10. + 0.5 : v.fov * 10. - 0.5));
}
else {
/* TODO: do ortho */
}
/* Set twist */
if (v.twist)
GS_set_twist((int)(v.twist > 0 ? v.twist + 0.5 : v.twist - 0.5));
/* TODO: OK to here - need to unravel/reverse lights stuff*** */
if (v.lightson) {
/* Lights are on */
/* Light Position */
gv->lights[0].position[X] = v.lightpos[X];
gv->lights[0].position[Y] = v.lightpos[Y];
gv->lights[0].position[Z] = v.lightpos[Z];
/* Light Color */
gv->lights[0].color[0] = v.lightcol[0];
gv->lights[0].color[1] = v.lightcol[1];
gv->lights[0].color[2] = v.lightcol[2];
/* Light Shininess */
gv->lights[0].shine = v.shine;
/* Light Ambient */
gv->lights[0].ambient[0] = gv->lights[0].ambient[1] =
gv->lights[0].ambient[2] = v.ambient * 3.;
} /* Done with lights */
GS_alldraw_wire();
} /* Done with file */
return (1);
}