2 * Copyright (C) 2009-2010 Andy Spencer <andy753421@gmail.com>
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
24 typedef struct _RoamView RoamView;
25 typedef struct _RoamPoint RoamPoint;
26 typedef struct _RoamTriangle RoamTriangle;
27 typedef struct _RoamDiamond RoamDiamond;
28 typedef struct _RoamSphere RoamSphere;
29 typedef gdouble (*RoamHeightFunc)(gdouble lat, gdouble lon, gpointer user_data);
43 gdouble x,y,z; // Model coordinates
44 gdouble px,py,pz; // Projected coordinates
45 gint pversion; // Version of cached projection
47 gint tris; // Associated triangles
48 gdouble norm[3]; // Vertex normal
50 /* For get_intersect */
51 gdouble lat, lon, elev;
54 RoamHeightFunc height_func;
57 RoamPoint *roam_point_new(double x, double y, double z);
58 void roam_point_add_triangle(RoamPoint *point, RoamTriangle *triangle);
59 void roam_point_remove_triangle(RoamPoint *point, RoamTriangle *triangle);
60 void roam_point_update_height(RoamPoint *point);
61 void roam_point_update_projection(RoamPoint *point, RoamSphere *sphere);
66 struct _RoamTriangle {
67 struct { RoamPoint *l,*m,*r; } p;
68 struct { RoamTriangle *l,*b,*r; } t;
75 /* For get_intersect */
76 struct { gdouble n,s,e,w; } edge;
77 RoamTriangle *kids[2];
79 RoamTriangle *roam_triangle_new(RoamPoint *l, RoamPoint *m, RoamPoint *r);
80 void roam_triangle_add(RoamTriangle *triangle,
81 RoamTriangle *left, RoamTriangle *base, RoamTriangle *right,
83 void roam_triangle_remove(RoamTriangle *triangle, RoamSphere *sphere);
84 void roam_triangle_update_errors(RoamTriangle *triangle, RoamSphere *sphere);
85 void roam_triangle_split(RoamTriangle *triangle, RoamSphere *sphere);
86 void roam_triangle_draw_normal(RoamTriangle *triangle);
92 RoamTriangle *kids[4];
93 RoamTriangle *parents[2];
98 RoamDiamond *roam_diamond_new(
99 RoamTriangle *parent0, RoamTriangle *parent1,
100 RoamTriangle *kid0, RoamTriangle *kid1,
101 RoamTriangle *kid2, RoamTriangle *kid3);
102 void roam_diamond_add(RoamDiamond *diamond, RoamSphere *sphere);
103 void roam_diamond_remove(RoamDiamond *diamond, RoamSphere *sphere);
104 void roam_diamond_merge(RoamDiamond *diamond, RoamSphere *sphere);
105 void roam_diamond_update_errors(RoamDiamond *diamond, RoamSphere *sphere);
116 /* For get_intersect */
117 RoamTriangle *roots[8];
119 RoamSphere *roam_sphere_new();
120 void roam_sphere_update_view(RoamSphere *sphere);
121 void roam_sphere_update_errors(RoamSphere *sphere);
122 void roam_sphere_split_one(RoamSphere *sphere);
123 void roam_sphere_merge_one(RoamSphere *sphere);
124 gint roam_sphere_split_merge(RoamSphere *sphere);
125 void roam_sphere_draw(RoamSphere *sphere);
126 void roam_sphere_draw_normals(RoamSphere *sphere);
127 GList *roam_sphere_get_intersect(RoamSphere *sphere, gboolean all,
128 gdouble n, gdouble s, gdouble e, gdouble w);
129 void roam_sphere_free(RoamSphere *sphere);