#include "gis-util.h"
#include "roam.h"
-#include "objects/gis-object.h"
-#include "objects/gis-tile.h"
-#include "objects/gis-marker.h"
-#include "objects/gis-callback.h"
-
// #define ROAM_DEBUG
/* Tessellation, "finding intersecting triangles" */
}
-/********************
- * Object handleing *
- ********************/
-static void _draw_tile(GisOpenGL *opengl, GisTile *tile, GList *triangles)
-{
- if (!tile || !tile->data)
- return;
- if (!triangles)
- g_warning("GisOpenGL: _draw_tiles - No triangles to draw: edges=%f,%f,%f,%f",
- tile->edge.n, tile->edge.s, tile->edge.e, tile->edge.w);
- //g_message("drawing %4d triangles for tile edges=%7.2f,%7.2f,%7.2f,%7.2f",
- // g_list_length(triangles), tile->edge.n, tile->edge.s, tile->edge.e, tile->edge.w);
- gdouble n = tile->edge.n;
- gdouble s = tile->edge.s;
- gdouble e = tile->edge.e;
- gdouble w = tile->edge.w;
-
- gdouble londist = e - w;
- gdouble latdist = n - s;
-
- gdouble xscale = tile->coords.e - tile->coords.w;
- gdouble yscale = tile->coords.s - tile->coords.n;
-
- for (GList *cur = triangles; cur; cur = cur->next) {
- RoamTriangle *tri = cur->data;
-
- gdouble lat[3] = {tri->p.r->lat, tri->p.m->lat, tri->p.l->lat};
- gdouble lon[3] = {tri->p.r->lon, tri->p.m->lon, tri->p.l->lon};
-
- if (lon[0] < -90 || lon[1] < -90 || lon[2] < -90) {
- if (lon[0] > 90) lon[0] -= 360;
- if (lon[1] > 90) lon[1] -= 360;
- if (lon[2] > 90) lon[2] -= 360;
- }
-
- gdouble xy[3][2] = {
- {(lon[0]-w)/londist, 1-(lat[0]-s)/latdist},
- {(lon[1]-w)/londist, 1-(lat[1]-s)/latdist},
- {(lon[2]-w)/londist, 1-(lat[2]-s)/latdist},
- };
-
- //if ((lat[0] == 90 && (xy[0][0] < 0 || xy[0][0] > 1)) ||
- // (lat[1] == 90 && (xy[1][0] < 0 || xy[1][0] > 1)) ||
- // (lat[2] == 90 && (xy[2][0] < 0 || xy[2][0] > 1)))
- // g_message("w,e=%4.f,%4.f "
- // "lat,lon,x,y="
- // "%4.1f,%4.0f,%4.2f,%4.2f "
- // "%4.1f,%4.0f,%4.2f,%4.2f "
- // "%4.1f,%4.0f,%4.2f,%4.2f ",
- // w,e,
- // lat[0], lon[0], xy[0][0], xy[0][1],
- // lat[1], lon[1], xy[1][0], xy[1][1],
- // lat[2], lon[2], xy[2][0], xy[2][1]);
-
- /* Fix poles */
- if (lat[0] == 90 || lat[0] == -90) xy[0][0] = 0.5;
- if (lat[1] == 90 || lat[1] == -90) xy[1][0] = 0.5;
- if (lat[2] == 90 || lat[2] == -90) xy[2][0] = 0.5;
-
- /* Scale to tile coords */
- for (int i = 0; i < 3; i++) {
- xy[i][0] = tile->coords.w + xy[i][0]*xscale;
- xy[i][1] = tile->coords.n + xy[i][1]*yscale;
- }
-
- glEnable(GL_TEXTURE_2D);
- glEnable(GL_POLYGON_OFFSET_FILL);
- glBindTexture(GL_TEXTURE_2D, *(guint*)tile->data);
- glPolygonOffset(0, -tile->zindex);
- glBegin(GL_TRIANGLES);
- glNormal3dv(tri->p.r->norm); glTexCoord2dv(xy[0]); glVertex3dv((double*)tri->p.r);
- glNormal3dv(tri->p.m->norm); glTexCoord2dv(xy[1]); glVertex3dv((double*)tri->p.m);
- glNormal3dv(tri->p.l->norm); glTexCoord2dv(xy[2]); glVertex3dv((double*)tri->p.l);
- glEnd();
- }
-}
-
-static void _draw_tiles(GisOpenGL *opengl, GisTile *tile)
-{
- /* Only draw children if possible */
- gboolean has_children = FALSE;
- GisTile *child;
- gis_tile_foreach(tile, child)
- if (child && child->data)
- has_children = TRUE;
-
- GList *triangles = NULL;
- if (has_children) {
- /* TODO: simplify this */
- const gdouble rows = G_N_ELEMENTS(tile->children);
- const gdouble cols = G_N_ELEMENTS(tile->children[0]);
- const gdouble lat_dist = tile->edge.n - tile->edge.s;
- const gdouble lon_dist = tile->edge.e - tile->edge.w;
- const gdouble lat_step = lat_dist / rows;
- const gdouble lon_step = lon_dist / cols;
- int row, col;
- gis_tile_foreach_index(tile, row, col) {
- GisTile *child = tile->children[row][col];
- if (child && child->data) {
- _draw_tiles(opengl, child);
- } else {
- const gdouble n = tile->edge.n-(lat_step*(row+0));
- const gdouble s = tile->edge.n-(lat_step*(row+1));
- const gdouble e = tile->edge.w+(lon_step*(col+1));
- const gdouble w = tile->edge.w+(lon_step*(col+0));
- GList *these = roam_sphere_get_intersect(opengl->sphere,
- FALSE, n, s, e, w);
- triangles = g_list_concat(triangles, these);
- }
- }
- } else {
- triangles = roam_sphere_get_intersect(opengl->sphere, FALSE,
- tile->edge.n, tile->edge.s, tile->edge.e, tile->edge.w);
- }
- if (triangles)
- _draw_tile(opengl, tile, triangles);
- g_list_free(triangles);
-}
-
-static void _draw_marker(GisOpenGL *opengl, GisMarker *marker)
-{
- GisPoint *point = gis_object_center(marker);
- gdouble px, py, pz;
- gis_viewer_project(GIS_VIEWER(opengl),
- point->lat, point->lon, point->elev,
- &px, &py, &pz);
-
- gint win_width = GTK_WIDGET(opengl)->allocation.width;
- gint win_height = GTK_WIDGET(opengl)->allocation.height;
- py = win_height - py;
- if (pz > 1)
- return;
-
- //g_debug("GisOpenGL: draw_marker - %s pz=%f ", marker->label, pz);
-
- cairo_surface_t *surface = cairo_get_target(marker->cairo);
- gdouble width = cairo_image_surface_get_width(surface);
- gdouble height = cairo_image_surface_get_height(surface);
-
- glMatrixMode(GL_PROJECTION); glLoadIdentity();
- glMatrixMode(GL_MODELVIEW); glLoadIdentity();
- glOrtho(0, win_width, win_height, 0, -1, 1);
- glTranslated(px - marker->xoff,
- py - marker->yoff, 0);
-
- glDisable(GL_LIGHTING);
- glDisable(GL_COLOR_MATERIAL);
- glDisable(GL_DEPTH_TEST);
- glEnable(GL_TEXTURE_2D);
- glBindTexture(GL_TEXTURE_2D, marker->tex);
- glDisable(GL_CULL_FACE);
- glBegin(GL_QUADS);
- glTexCoord2f(1, 0); glVertex3f(width, 0 , 0);
- glTexCoord2f(1, 1); glVertex3f(width, height, 0);
- glTexCoord2f(0, 1); glVertex3f(0 , height, 0);
- glTexCoord2f(0, 0); glVertex3f(0 , 0 , 0);
- glEnd();
-}
-
-static void _draw_callback(GisOpenGL *opengl, GisCallback *callback)
-{
- callback->callback(callback, callback->user_data);
-}
-
-static void _draw_object(GisOpenGL *opengl, GisObject *object)
-{
- //g_debug("GisOpenGL: draw_object");
- /* Skip hidden objects */
- if (object->hidden)
- return;
-
- /* Skip out of range objects */
- if (object->lod > 0) {
- /* LOD test */
- gdouble eye[3], obj[3];
- gis_viewer_get_location(GIS_VIEWER(opengl), &eye[0], &eye[1], &eye[2]);
- gdouble elev = eye[2];
- lle2xyz(eye[0], eye[1], eye[2], &eye[0], &eye[1], &eye[2]);
- lle2xyz(object->center.lat, object->center.lon, object->center.elev,
- &obj[0], &obj[1], &obj[2]);
- gdouble dist = distd(obj, eye);
- if (object->lod < dist)
- return;
-
- /* Horizon testing */
- gdouble c = EARTH_R+elev;
- gdouble a = EARTH_R;
- gdouble horizon = sqrt(c*c - a*a);
- if (dist > horizon)
- return;
- }
-
- /* Draw */
- glMatrixMode(GL_PROJECTION); glPushMatrix();
- glMatrixMode(GL_MODELVIEW); glPushMatrix();
- glPushAttrib(GL_ALL_ATTRIB_BITS);
- if (GIS_IS_MARKER(object)) {
- _draw_marker(opengl, GIS_MARKER(object));
- } else if (GIS_IS_CALLBACK(object)) {
- _draw_callback(opengl, GIS_CALLBACK(object));
- } else if (GIS_IS_TILE(object)) {
- glEnable(GL_DEPTH_TEST);
- glDepthFunc(GL_LESS);
- g_mutex_lock(opengl->sphere_lock);
- _draw_tiles(opengl, GIS_TILE(object));
- g_mutex_unlock(opengl->sphere_lock);
- }
- glPopAttrib();
- glMatrixMode(GL_PROJECTION); glPopMatrix();
- glMatrixMode(GL_MODELVIEW); glPopMatrix();
-}
-
-static void _load_object(GisOpenGL *opengl, GisObject *object)
-{
- //g_debug("GisOpenGL: load_object");
- if (GIS_IS_MARKER(object)) {
- GisMarker *marker = GIS_MARKER(object);
- cairo_surface_t *surface = cairo_get_target(marker->cairo);
- gdouble width = cairo_image_surface_get_width(surface);
- gdouble height = cairo_image_surface_get_height(surface);
-
- glEnable(GL_TEXTURE_2D);
- glGenTextures(1, &marker->tex);
- glBindTexture(GL_TEXTURE_2D, marker->tex);
-
- glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
- glPixelStorei(GL_PACK_ALIGNMENT, 1);
- glTexImage2D(GL_TEXTURE_2D, 0, 4, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE,
- cairo_image_surface_get_data(surface));
- glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
- glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
- //g_debug("load_texture: %d", marker->tex);
- }
-}
-
-static void _unload_object(GisOpenGL *opengl, GisObject *object)
-{
- //g_debug("GisOpenGL: unload_object");
- if (GIS_IS_MARKER(object)) {
- GisMarker *marker = GIS_MARKER(object);
- glDeleteTextures(1, &marker->tex);
- }
-}
-
-
/*************
* Callbacks *
*************/
glDepthMask(TRUE);
glClear(GL_DEPTH_BUFFER_BIT);
for (cur = level->unsorted.next; cur; cur = cur->next, nunsorted++)
- _draw_object(opengl, GIS_OBJECT(cur->data));
+ gis_object_draw( GIS_OBJECT(cur->data), opengl);
/* Freeze depth buffer and draw transparent objects sorted */
/* TODO: sorting */
//glDepthMask(FALSE);
glAlphaFunc(GL_GREATER, 0.1);
for (cur = level->sorted.next; cur; cur = cur->next, nsorted++)
- _draw_object(opengl, GIS_OBJECT(cur->data));
+ gis_object_draw(GIS_OBJECT(cur->data), opengl);
/* TODO: Prune empty levels */
g_assert(GIS_IS_OPENGL(_opengl));
GisOpenGL *opengl = GIS_OPENGL(_opengl);
g_mutex_lock(opengl->objects_lock);
- _load_object(opengl, object);
struct RenderLevel *level = g_tree_lookup(opengl->objects, (gpointer)key);
if (!level) {
level = g_new0(struct RenderLevel, 1);
g_mutex_lock(opengl->objects_lock);
GList *link = _link;
GisObject *object = link->data;
- _unload_object(opengl, object);
/* Just unlink and free it, link->prev is assured */
link->prev->next = link->next;
if (link->next)
projects / grits / blobdiff