/*
* Copyright (C) 2009 Andy Spencer <spenceal@rose-hulman.edu>
- *
+ *
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
- *
+ *
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
- *
+ *
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
*/
/* Misc */
-RoamView *roam_view_get()
+RoamView *roam_view_new()
{
- RoamView *view = g_new0(RoamView, 1);
- glGetDoublev (GL_MODELVIEW_MATRIX, view->model);
- glGetDoublev (GL_PROJECTION_MATRIX, view->proj);
- glGetIntegerv(GL_VIEWPORT, view->view);
- return view;
+ return g_new0(RoamView, 1);
+}
+void roam_view_update(RoamView *view)
+{
+ glGetDoublev (GL_MODELVIEW_MATRIX, view->model);
+ glGetDoublev (GL_PROJECTION_MATRIX, view->proj);
+ glGetIntegerv(GL_VIEWPORT, view->view);
+ view->version++;
}
/* For GPQueue comparators */
self->norm[i] -= triangle->norm[i];
}
self->tris--;
- for (int i = 0; i < 3; i++)
- self->norm[i] /= self->tris;
+ if (self->tris)
+ for (int i = 0; i < 3; i++)
+ self->norm[i] /= self->tris;
+}
+void roam_point_update_height(RoamPoint *self, RoamSphere *sphere)
+{
+ if (sphere->height_func) {
+ sphere->height_func(self, sphere->user_data);
+ } else {
+ gdouble dist = sqrt(self->x * self->x +
+ self->y * self->y +
+ self->z * self->z);
+ self->x = self->x/dist * 6371000;
+ self->y = self->y/dist * 6371000;
+ self->z = self->z/dist * 6371000;
+ }
}
-void roam_point_update(RoamPoint *self, RoamSphere *sphere, gboolean do_height)
+void roam_point_update_projection(RoamPoint *self, RoamSphere *sphere)
{
- if (!self->cached) {
- /* Cache height */
- if (do_height)
- sphere->height_func(self, sphere->user_data);
+ static int count = 0;
+ static int version = 0;
+ if (version != sphere->view->version) {
+ g_debug("Projected %d points", count);
+ count = 0;
+ version = sphere->view->version;
+ }
+ if (self->pversion != sphere->view->version) {
/* Cache projection */
gluProject(self->x, self->y, self->z,
sphere->view->model, sphere->view->proj, sphere->view->view,
&self->px, &self->py, &self->pz);
-
- self->cached = TRUE;
+ self->pversion = sphere->view->version;
+ count++;
}
}
-void roam_point_clear(RoamPoint *self)
-{
- self->cached = FALSE;
-}
/****************
* RoamTriangle *
self->p.l = l;
self->p.m = m;
self->p.r = r;
+ self->split = roam_point_new(
+ (l->x + r->x)/2,
+ (l->y + r->y)/2,
+ (l->z + r->z)/2);
self->error = 0;
self->norm[0] /= total;
self->norm[1] /= total;
self->norm[2] /= total;
-
+
//g_message("roam_triangle_new: %p", self);
return self;
}
+void roam_triangle_free(RoamTriangle *self)
+{
+ g_free(self->split);
+ g_free(self);
+}
+
void roam_triangle_add(RoamTriangle *self,
RoamTriangle *left, RoamTriangle *base, RoamTriangle *right,
RoamSphere *sphere)
roam_point_add_triangle(self->p.r, self);
if (sphere->view)
- roam_triangle_update(self, sphere);
+ roam_triangle_update_errors(self, sphere);
self->handle = g_pqueue_push(sphere->triangles, self);
}
roam_point_visible(self->p.r, sphere);
}
-void roam_triangle_update(RoamTriangle *self, RoamSphere *sphere)
+void roam_triangle_update_errors(RoamTriangle *self, RoamSphere *sphere)
{
/* Update points */
- roam_point_update(self->p.l, sphere, TRUE);
- roam_point_update(self->p.m, sphere, TRUE);
- roam_point_update(self->p.r, sphere, TRUE);
+ roam_point_update_projection(self->p.l, sphere);
+ roam_point_update_projection(self->p.m, sphere);
+ roam_point_update_projection(self->p.r, sphere);
+ roam_point_update_projection(self->split, sphere);
/* Not exactly correct, could be out on both sides (middle in) */
if (!roam_triangle_visible(self, sphere)) {
RoamPoint *l = self->p.l;
RoamPoint *m = self->p.m;
RoamPoint *r = self->p.r;
+ RoamPoint *split = self->split;
- /* TODO: share this with the base */
- RoamPoint base = { (l->x + r->x)/2,
- (l->y + r->y)/2,
- (l->z + r->z)/2 };
- RoamPoint good = base;
- roam_point_update(&base, sphere, FALSE);
- roam_point_update(&good, sphere, TRUE);
+ /* l-r midpoint projected l-r midpoint */
+ gdouble pxdist = (l->px + r->px)/2 - split->px;
+ gdouble pydist = (l->py + r->py)/2 - split->py;
- self->error = sqrt((base.px - good.px) * (base.px - good.px) +
- (base.py - good.py) * (base.py - good.py));
+ self->error = sqrt(pxdist*pxdist + pydist*pydist);
/* Multiply by size of triangle */
double size = -( l->px * (m->py - r->py) +
}
}
-void roam_triangle_clear(RoamTriangle *self)
-{
- /* Clear points */
- roam_point_clear(self->p.l);
- roam_point_clear(self->p.m);
- roam_point_clear(self->p.r);
-}
-
void roam_triangle_split(RoamTriangle *self, RoamSphere *sphere)
{
//g_message("roam_triangle_split: %p, e=%f\n", self, self->error);
RoamTriangle *base = self->t.b;
- /* Duplicate midpoint */
- RoamPoint *mid = roam_point_new(
- (self->p.l->x + self->p.r->x)/2,
- (self->p.l->y + self->p.r->y)/2,
- (self->p.l->z + self->p.r->z)/2);
- roam_point_update(mid, sphere, TRUE);
/* Add new triangles */
+ RoamPoint *mid = self->split;
RoamTriangle *sl = roam_triangle_new(self->p.m, mid, self->p.l); // Self Left
RoamTriangle *sr = roam_triangle_new(self->p.r, mid, self->p.m); // Self Right
RoamTriangle *bl = roam_triangle_new(base->p.m, mid, base->p.l); // Base Left
RoamTriangle *br = roam_triangle_new(base->p.r, mid, base->p.m); // Base Right
+ roam_point_update_height(sl->split, sphere);
+ roam_point_update_height(sr->split, sphere);
+ roam_point_update_height(bl->split, sphere);
+ roam_point_update_height(br->split, sphere);
+
/* tri,l, base, r, sphere */
roam_triangle_add(sl, sr, self->t.l, br, sphere);
roam_triangle_add(sr, bl, self->t.r, sl, sphere);
/* Add/Remove diamonds */
RoamDiamond *diamond = roam_diamond_new(self, base, sl, sr, bl, br);
- roam_diamond_update(diamond, sphere);
+ roam_diamond_update_errors(diamond, sphere);
roam_diamond_add(diamond, sphere);
roam_diamond_remove(self->parent, sphere);
roam_diamond_remove(base->parent, sphere);
}
+void roam_triangle_draw(RoamTriangle *self)
+{
+ glBegin(GL_TRIANGLES);
+ glNormal3dv(self->p.r->norm); glVertex3dv((double*)self->p.r);
+ glNormal3dv(self->p.m->norm); glVertex3dv((double*)self->p.m);
+ glNormal3dv(self->p.l->norm); glVertex3dv((double*)self->p.l);
+ glEnd();
+ return;
+}
+
void roam_triangle_draw_normal(RoamTriangle *self)
{
double center[] = {
(self->p.l->z + self->p.m->z + self->p.r->z)/3.0,
};
double end[] = {
- center[0]+self->norm[0]/2,
- center[1]+self->norm[1]/2,
- center[2]+self->norm[2]/2,
+ center[0]+self->norm[0]*2000000,
+ center[1]+self->norm[1]*2000000,
+ center[2]+self->norm[2]*2000000,
};
glBegin(GL_LINES);
glVertex3dv(center);
self->kids[2] = kid2;
self->kids[3] = kid3;
- kid0->parent = self;
- kid1->parent = self;
- kid2->parent = self;
- kid3->parent = self;
+ kid0->parent = self;
+ kid1->parent = self;
+ kid2->parent = self;
+ kid3->parent = self;
self->parents[0] = parent0;
self->parents[1] = parent1;
/* Add/Remove triangles */
if (tri->t.l->t.l == tri->t.r->t.r &&
tri->t.l->t.l != tri && tri->parent) {
- roam_diamond_update(tri->parent, sphere);
+ roam_diamond_update_errors(tri->parent, sphere);
roam_diamond_add(tri->parent, sphere);
}
if (base->t.l->t.l == base->t.r->t.r &&
base->t.l->t.l != base && base->parent) {
- roam_diamond_update(base->parent, sphere);
+ roam_diamond_update_errors(base->parent, sphere);
roam_diamond_add(base->parent, sphere);
}
-
+
/* Remove and free diamond and child triangles */
roam_diamond_remove(self, sphere);
g_assert(self->kids[0]->p.m == self->kids[1]->p.m &&
self->kids[1]->p.m == self->kids[2]->p.m &&
self->kids[2]->p.m == self->kids[3]->p.m);
g_assert(self->kids[0]->p.m->tris == 0);
- g_free(self->kids[0]->p.m);
- g_free(self->kids[0]);
- g_free(self->kids[1]);
- g_free(self->kids[2]);
- g_free(self->kids[3]);
+ roam_triangle_free(self->kids[0]);
+ roam_triangle_free(self->kids[1]);
+ roam_triangle_free(self->kids[2]);
+ roam_triangle_free(self->kids[3]);
g_free(self);
}
-void roam_diamond_update(RoamDiamond *self, RoamSphere *sphere)
+void roam_diamond_update_errors(RoamDiamond *self, RoamSphere *sphere)
{
- roam_triangle_update(self->parents[0], sphere);
- roam_triangle_update(self->parents[1], sphere);
+ roam_triangle_update_errors(self->parents[0], sphere);
+ roam_triangle_update_errors(self->parents[1], sphere);
self->error = MAX(self->parents[0]->error, self->parents[1]->error);
}
/**************
* RoamSphere *
**************/
-RoamSphere *roam_sphere_new(RoamTriFunc tri_func, RoamHeightFunc height_func, gpointer user_data)
+RoamSphere *roam_sphere_new(gpointer user_data)
{
RoamSphere *self = g_new0(RoamSphere, 1);
- self->tri_func = tri_func;
- self->height_func = height_func;
self->user_data = user_data;
self->polys = 12;
self->triangles = g_pqueue_new((GCompareDataFunc)tri_cmp, NULL);
};
RoamTriangle *triangles[12];
+ for (int i = 0; i < 8; i++)
+ roam_point_update_height(vertexes[i], self);
for (int i = 0; i < 12; i++)
triangles[i] = roam_triangle_new(
vertexes[_triangles[i][0][0]],
vertexes[_triangles[i][0][1]],
vertexes[_triangles[i][0][2]]);
+ for (int i = 0; i < 12; i++)
+ roam_point_update_height(triangles[i]->split, self);
for (int i = 0; i < 12; i++)
roam_triangle_add(triangles[i],
triangles[_triangles[i][1][0]],
return self;
}
-void roam_sphere_update(RoamSphere *self)
+void roam_sphere_update_errors(RoamSphere *self)
{
g_debug("RoamSphere: update - polys=%d", self->polys);
- if (self->view) g_free(self->view);
- self->view = roam_view_get();
+ if (!self->view)
+ self->view = roam_view_new();
+ roam_view_update(self->view);
GPtrArray *tris = g_pqueue_get_array(self->triangles);
GPtrArray *dias = g_pqueue_get_array(self->diamonds);
for (int i = 0; i < tris->len; i++) {
- /* Note: this also updates points */
RoamTriangle *tri = tris->pdata[i];
- roam_triangle_clear(tri);
- roam_triangle_update(tri, self);
+ roam_triangle_update_errors(tri, self);
g_pqueue_priority_changed(self->triangles, tri->handle);
}
for (int i = 0; i < dias->len; i++) {
RoamDiamond *dia = dias->pdata[i];
- roam_diamond_update(dia, self);
+ roam_diamond_update_errors(dia, self);
g_pqueue_priority_changed(self->diamonds, dia->handle);
}
gint roam_sphere_split_merge(RoamSphere *self)
{
gint iters = 0, max_iters = 500;
- gint target = 2000;
+ gint target = 4000;
if (!self->view)
return 0;
}
void roam_sphere_draw(RoamSphere *self)
{
- g_pqueue_foreach(self->triangles, (GFunc)self->tri_func, self->user_data);
+ g_message("RoamSphere: draw");
+ g_pqueue_foreach(self->triangles, (GFunc)roam_triangle_draw, NULL);
}
void roam_sphere_draw_normals(RoamSphere *self)
{
+ g_message("RoamSphere: draw_normal");
g_pqueue_foreach(self->triangles, (GFunc)roam_triangle_draw_normal, NULL);
}
-static void roam_sphere_free_tri(RoamTriangle *tri)
+void roam_sphere_free_tri(RoamTriangle *tri)
{
if (--tri->p.l->tris == 0) g_free(tri->p.l);
if (--tri->p.m->tris == 0) g_free(tri->p.m);
if (--tri->p.r->tris == 0) g_free(tri->p.r);
- g_free(tri);
+ roam_triangle_free(tri);
}
void roam_sphere_free(RoamSphere *self)
{
projects / grits / blobdiff