Example #1
0
/*!
   \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;
}
Example #2
0
File: Gs3.c Project: caomw/grass
/*!
   \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);

}