X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;f=src%2Fgis-opengl.c;h=6b70f14a53c1638946d2d6c263bb8f183881917c;hb=b088e18d9e838064bb264a145ff66e57886ee42a;hp=46eae608657ef4a8053eeaae9a2a544479a4a89f;hpb=5e8bf923bce829075eb0754eecfd7e6b9b768a61;p=grits diff --git a/src/gis-opengl.c b/src/gis-opengl.c index 46eae60..6b70f14 100644 --- a/src/gis-opengl.c +++ b/src/gis-opengl.c @@ -1,270 +1,607 @@ /* * Copyright (C) 2009 Andy Spencer - * + * * 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 . */ +/* Tessellation, "finding intersecting triangles" */ +/* http://research.microsoft.com/pubs/70307/tr-2006-81.pdf */ +/* http://www.opengl.org/wiki/Alpha_Blending */ + #include #include +#include #include #include #include #include #include -#include "misc.h" -#include "aweather-gui.h" -#include "gis-world.h" -#include "gis-view.h" #include "gis-opengl.h" +#include "gis-util.h" +#include "gis-object.h" +#include "roam.h" + +#define FOV_DIST 2000.0 +#define MPPX(dist) (4*dist/FOV_DIST) + +// #define ROAM_DEBUG +/****************** + * Object drawing * + ******************/ +static void _gis_opengl_draw_triangle(GisOpenGL *self, GisTriangle *tri) +{ +} -/**************** - * GObject code * - ****************/ -G_DEFINE_TYPE(GisOpenGL, gis_opengl, G_TYPE_OBJECT); -static void gis_opengl_init(GisOpenGL *self) +static void _gis_opengl_draw_quad(GisOpenGL *self, GisQuad *quad) { - g_debug("GisOpenGL: init"); } -static GObject *gis_opengl_constructor(GType gtype, guint n_properties, - GObjectConstructParam *properties) + +static void _gis_opengl_draw_callback(GisOpenGL *self, GisCallback *cb) { - g_debug("gis_opengl: constructor"); - GObjectClass *parent_class = G_OBJECT_CLASS(gis_opengl_parent_class); - return parent_class->constructor(gtype, n_properties, properties); } -static void gis_opengl_dispose(GObject *gobject) + +static void _gis_opengl_draw_marker(GisOpenGL *self, GisMarker *marker) { - g_debug("GisOpenGL: dispose"); - GisOpenGL *self = GIS_OPENGL(gobject); - if (self->world) { - g_object_unref(self->world); - self->world = NULL; - } - if (self->view) { - g_object_unref(self->view); - self->view = NULL; - } - if (self->drawing) { - g_object_unref(self->drawing); - self->drawing = NULL; + GisProjection *proj = (GisProjection*)self->sphere->view; + GisPoint *point = gis_object_center(marker); + gis_point_project(point, proj); + + double width = GTK_WIDGET(self)->allocation.width; + double height = GTK_WIDGET(self)->allocation.height; + + cairo_set_source_rgba(self->canvas, 1, 1, 1, 1); + cairo_arc(self->canvas, point->px, height-point->py, 4, 0, 2*G_PI); + cairo_fill(self->canvas); + cairo_move_to(self->canvas, point->px+4, height-point->py-8); + cairo_set_font_size(self->canvas, 10); + cairo_show_text(self->canvas, marker->label); +} + +static void gis_opengl_draw_object(GisOpenGL *self, GisObject *object) +{ + g_debug("GisOpenGL: draw_object - Drawing object of type %d", object->type); + switch (object->type) { + case GIS_TYPE_TRIANGLE: _gis_opengl_draw_triangle(self, GIS_TRIANGLE(object)); break; + case GIS_TYPE_QUAD : _gis_opengl_draw_quad (self, GIS_QUAD (object)); break; + case GIS_TYPE_CALLBACK: _gis_opengl_draw_callback(self, GIS_CALLBACK(object)); break; + case GIS_TYPE_MARKER : _gis_opengl_draw_marker (self, GIS_MARKER (object)); break; + default: g_warning("GisOpenGL: draw_object - invalid type %d", object->type); } - G_OBJECT_CLASS(gis_opengl_parent_class)->dispose(gobject); } -static void gis_opengl_finalize(GObject *gobject) +static void gis_opengl_draw_objects(GisOpenGL *self) +{ + g_debug("GisOpenGL: draw_objects"); + + double width = GTK_WIDGET(self)->allocation.width; + double height = GTK_WIDGET(self)->allocation.height; + cairo_surface_t *surface = cairo_get_target(self->canvas); + int stride = cairo_image_surface_get_stride(surface); + guchar *data = cairo_image_surface_get_data(surface); + memset(data, 0, height*stride); + + /* Draw objects */ + for (GList *cur = GIS_VIEWER(self)->objects; cur; cur = cur->next) + gis_opengl_draw_object(self, cur->data); + + /* Copy canvas to opengl */ + glMatrixMode(GL_PROJECTION); glPushMatrix(); glLoadIdentity(); + glMatrixMode(GL_MODELVIEW); glPushMatrix(); glLoadIdentity(); + glDisable(GL_CULL_FACE); + glDisable(GL_DEPTH_TEST); + glDisable(GL_LIGHTING); + glDisable(GL_COLOR_MATERIAL); + glEnable(GL_TEXTURE_2D); + glBindTexture(GL_TEXTURE_2D, self->canvas_tex); + //glTexSubImage2D(GL_TEXTURE_2D, 0, 0,0, width,height, + // GL_RGBA, GL_UNSIGNED_BYTE, data); + glBegin(GL_QUADS); + glTexCoord2d(0, 0); glVertex3f(-1, 1, 1); + glTexCoord2d(1, 0); glVertex3f( 1, 1, 1); + glTexCoord2d(1, 1); glVertex3f( 1, -1, 1); + glTexCoord2d(0, 1); glVertex3f(-1, -1, 1); + glEnd(); + glMatrixMode(GL_PROJECTION); glPopMatrix(); + glMatrixMode(GL_MODELVIEW); glPopMatrix(); +} + + +/*********** + * Helpers * + ***********/ +static void _gis_opengl_begin(GisOpenGL *self) { - g_debug("GisOpenGL: finalize"); - G_OBJECT_CLASS(gis_opengl_parent_class)->finalize(gobject); - gtk_main_quit(); + g_assert(GIS_IS_OPENGL(self)); + + GdkGLContext *glcontext = gtk_widget_get_gl_context(GTK_WIDGET(self)); + GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(GTK_WIDGET(self)); + if (!gdk_gl_drawable_gl_begin(gldrawable, glcontext)) + g_assert_not_reached(); } -static void gis_opengl_class_init(GisOpenGLClass *klass) + +static void _gis_opengl_end(GisOpenGL *self) { - g_debug("GisOpenGL: class_init"); - GObjectClass *gobject_class = G_OBJECT_CLASS(klass); - gobject_class->constructor = gis_opengl_constructor; - gobject_class->dispose = gis_opengl_dispose; - gobject_class->finalize = gis_opengl_finalize; + g_assert(GIS_IS_OPENGL(self)); + GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(GTK_WIDGET(self)); + gdk_gl_drawable_gl_end(gldrawable); } /************* - * Callbacks * + * ROAM Code * *************/ -gboolean on_button_press(GtkWidget *widget, GdkEventButton *event, GisOpenGL *self) +static void _set_visuals(GisOpenGL *self) { - g_debug("GisOpenGL: on_drawing_button_press - Grabbing focus"); - gtk_widget_grab_focus(GTK_WIDGET(self->drawing)); - return TRUE; -} -gboolean on_key_press(GtkWidget *widget, GdkEventKey *event, GisOpenGL *self) -{ - g_debug("GisOpenGL: on_drawing_key_press - key=%x, state=%x, plus=%x", - event->keyval, event->state, GDK_plus); - double x,y,z; - gis_view_get_location(self->view, &x, &y, &z); - guint kv = event->keyval; - if (kv == GDK_Left || kv == GDK_h) gis_view_pan(self->view, -z/10, 0, 0); - else if (kv == GDK_Down || kv == GDK_j) gis_view_pan(self->view, 0, -z/10, 0); - else if (kv == GDK_Up || kv == GDK_k) gis_view_pan(self->view, 0, z/10, 0); - else if (kv == GDK_Right || kv == GDK_l) gis_view_pan(self->view, z/10, 0, 0); - else if (kv == GDK_minus || kv == GDK_o) gis_view_zoom(self->view, 10./9); - else if (kv == GDK_plus || kv == GDK_i) gis_view_zoom(self->view, 9./10); - else if (kv == GDK_H ) gis_view_rotate(self->view, 0, -10, 0); - else if (kv == GDK_J ) gis_view_rotate(self->view, 10, 0, 0); - else if (kv == GDK_K ) gis_view_rotate(self->view, -10, 0, 0); - else if (kv == GDK_L ) gis_view_rotate(self->view, 0, 10, 0); - return TRUE; -} + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); + /* Camera 1 */ + double lat, lon, elev, rx, ry, rz; + gis_viewer_get_location(GIS_VIEWER(self), &lat, &lon, &elev); + gis_viewer_get_rotation(GIS_VIEWER(self), &rx, &ry, &rz); + glRotatef(rx, 1, 0, 0); + glRotatef(rz, 0, 0, 1); -gboolean on_map(GtkWidget *drawing, GdkEventConfigure *event, GisOpenGL *self) -{ - g_debug("GisOpenGL: on_map"); + /* Lighting */ +#ifdef ROAM_DEBUG + float light_ambient[] = {0.7f, 0.7f, 0.7f, 1.0f}; + float light_diffuse[] = {2.0f, 2.0f, 2.0f, 1.0f}; +#else + float light_ambient[] = {0.2f, 0.2f, 0.2f, 1.0f}; + float light_diffuse[] = {5.0f, 5.0f, 5.0f, 1.0f}; +#endif + float light_position[] = {-13*EARTH_R, 1*EARTH_R, 3*EARTH_R, 1.0f}; + glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient); + glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse); + glLightfv(GL_LIGHT0, GL_POSITION, light_position); + glEnable(GL_LIGHT0); + glEnable(GL_LIGHTING); + + float material_ambient[] = {0.2, 0.2, 0.2, 1.0}; + float material_diffuse[] = {0.8, 0.8, 0.8, 1.0}; + float material_specular[] = {0.0, 0.0, 0.0, 1.0}; + float material_emission[] = {0.0, 0.0, 0.0, 1.0}; + glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, material_ambient); + glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, material_diffuse); + glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, material_specular); + glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, material_emission); + glDisable(GL_TEXTURE_2D); + glDisable(GL_COLOR_MATERIAL); + + /* Camera 2 */ + glTranslatef(0, 0, -elev2rad(elev)); + glRotatef(lat, 1, 0, 0); + glRotatef(-lon, 0, 1, 0); /* Misc */ - glEnable(GL_BLEND); + gdouble rg = MAX(0, 1-(elev/20000)); + gdouble blue = MAX(0, 1-(elev/50000)); + glClearColor(MIN(0.65,rg), MIN(0.65,rg), MIN(1,blue), 1.0f); + glColor4f(1, 1, 1, 1); + + glDisable(GL_ALPHA_TEST); + glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); - glClearColor(0.0f, 0.0f, 0.0f, 0.0f); + glEnable(GL_BLEND); - /* Tessellation, "finding intersecting triangles" */ - /* http://research.microsoft.com/pubs/70307/tr-2006-81.pdf */ - /* http://www.opengl.org/wiki/Alpha_Blending */ - glAlphaFunc(GL_GREATER,0.1); - glEnable(GL_ALPHA_TEST); +#ifndef ROAM_DEBUG + glCullFace(GL_BACK); + glEnable(GL_CULL_FACE); +#endif - /* Depth test */ glClearDepth(1.0); glDepthFunc(GL_LEQUAL); glEnable(GL_DEPTH_TEST); - gis_opengl_end(self); - return FALSE; + glEnable(GL_LINE_SMOOTH); + + glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); + //glShadeModel(GL_FLAT); + + roam_sphere_update_view(self->sphere); } -gboolean on_configure(GtkWidget *drawing, GdkEventConfigure *event, GisOpenGL *self) -{ - g_debug("GisOpenGL: on_confiure"); - gis_opengl_begin(self); - double x, y, z; - gis_view_get_location(self->view, &x, &y, &z); +/************* + * Callbacks * + *************/ +static void on_realize(GisOpenGL *self, gpointer _) +{ + g_debug("GisOpenGL: on_realize"); + _set_visuals(self); + roam_sphere_update_errors(self->sphere); +} +static gboolean on_configure(GisOpenGL *self, GdkEventConfigure *event, gpointer _) +{ + g_debug("GisOpenGL: on_configure"); + _gis_opengl_begin(self); - /* Window is at 500 m from camera */ - double width = GTK_WIDGET(self->drawing)->allocation.width; - double height = GTK_WIDGET(self->drawing)->allocation.height; + double width = GTK_WIDGET(self)->allocation.width; + double height = GTK_WIDGET(self)->allocation.height; + /* Setup OpenGL Window */ glViewport(0, 0, width, height); - - /* Perspective */ glMatrixMode(GL_PROJECTION); glLoadIdentity(); - double ang = atan((height/2)/500); - - //gluPerspective(r2d(ang)*2, width/height, -z-20, -z+20); - gluPerspective(r2d(ang)*2, width/height, 1, 500*1000); - - gis_opengl_end(self); + double ang = atan(height/FOV_DIST); + gluPerspective(rad2deg(ang)*2, width/height, 1, 20*EARTH_R); + + /* Recreate the canvas */ + if (self->canvas) { + cairo_surface_destroy(cairo_get_target(self->canvas)); + cairo_destroy(self->canvas); + glDeleteTextures(1, &self->canvas_tex); + } + g_message("creating %fx%f canvas", width, height); + cairo_surface_t *surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, width, height); + self->canvas = cairo_create(surface); + glEnable(GL_TEXTURE_2D); + glPixelStorei(GL_UNPACK_ALIGNMENT, 1); + glPixelStorei(GL_PACK_ALIGNMENT, 1); + glGenTextures(1, &self->canvas_tex); + glBindTexture(GL_TEXTURE_2D, self->canvas_tex); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, + cairo_image_surface_get_data(cairo_get_target(self->canvas))); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + + +#ifndef ROAM_DEBUG + roam_sphere_update_errors(self->sphere); +#endif + + _gis_opengl_end(self); return FALSE; } -gboolean on_expose(GtkWidget *drawing, GdkEventExpose *event, GisOpenGL *self) +static void _on_expose_plugin(GisPlugin *plugin, gchar *name, GisOpenGL *self) +{ + _set_visuals(self); + glMatrixMode(GL_PROJECTION); glPushMatrix(); + glMatrixMode(GL_MODELVIEW); glPushMatrix(); + gis_plugin_expose(plugin); + glMatrixMode(GL_PROJECTION); glPopMatrix(); + glMatrixMode(GL_MODELVIEW); glPopMatrix(); +} +static gboolean on_expose(GisOpenGL *self, GdkEventExpose *event, gpointer _) { g_debug("GisOpenGL: on_expose - begin"); - gis_opengl_begin(self); + _gis_opengl_begin(self); - double lx, ly, lz; - double rx, ry, rz; - gis_view_get_location(self->view, &lx, &ly, &lz); - gis_view_get_rotation(self->view, &rx, &ry, &rz); + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - glMatrixMode(GL_MODELVIEW); - glLoadIdentity(); - glTranslatef(lx, ly, lz); - glRotatef(rx, 1, 0, 0); - glRotatef(ry, 0, 1, 0); - glRotatef(rz, 0, 0, 1); +#ifndef ROAM_DEBUG + gis_plugins_foreach(GIS_VIEWER(self)->plugins, + G_CALLBACK(_on_expose_plugin), self); + gis_opengl_draw_objects(self); + if (self->wireframe) { + _set_visuals(self); + glPolygonMode(GL_FRONT_AND_BACK, GL_LINE); + roam_sphere_draw(self->sphere); + } +#else + _set_visuals(self); + glColor4f(0.0, 0.0, 9.0, 0.6); + glDisable(GL_TEXTURE_2D); + glPolygonMode(GL_FRONT_AND_BACK, GL_LINE); + roam_sphere_draw(self->sphere); + //roam_sphere_draw_normals(self->sphere); +#endif + + GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(GTK_WIDGET(self)); + gdk_gl_drawable_swap_buffers(gldrawable); + + _gis_opengl_end(self); + g_debug("GisOpenGL: on_expose - end\n"); + return FALSE; +} + +static gboolean on_key_press(GisOpenGL *self, GdkEventKey *event, gpointer _) +{ + g_debug("GisOpenGL: on_key_press - key=%x, state=%x, plus=%x", + event->keyval, event->state, GDK_plus); - /* Expose plugins */ - /* TODO: Figure out how to handle plugins: - * - Do they belong to AWeatherGui, GisOpenGL, etc? - */ - for (GList *cur = self->plugins; cur; cur = cur->next) { - AWeatherPlugin *plugin = AWEATHER_PLUGIN(cur->data); - aweather_plugin_expose(plugin); + guint kv = event->keyval; + gdk_threads_leave(); + /* Testing */ + if (kv == GDK_w) { + self->wireframe = !self->wireframe; + gtk_widget_queue_draw(GTK_WIDGET(self)); } +#ifdef ROAM_DEBUG + else if (kv == GDK_n) roam_sphere_split_one(self->sphere); + else if (kv == GDK_p) roam_sphere_merge_one(self->sphere); + else if (kv == GDK_r) roam_sphere_split_merge(self->sphere); + else if (kv == GDK_u) roam_sphere_update_errors(self->sphere); + gdk_threads_enter(); + gtk_widget_queue_draw(GTK_WIDGET(self)); +#else + gdk_threads_enter(); +#endif + return FALSE; +} - gis_opengl_end(self); - gis_opengl_flush(self); - g_debug("GisOpenGL: on_expose - end\n"); +static gboolean _update_errors_cb(gpointer sphere) +{ + roam_sphere_update_errors(sphere); return FALSE; } +static void on_view_changed(GisOpenGL *self, + gdouble _1, gdouble _2, gdouble _3) +{ + g_debug("GisOpenGL: on_view_changed"); + gdk_threads_enter(); + _gis_opengl_begin(self); + _set_visuals(self); +#ifndef ROAM_DEBUG + g_idle_add_full(G_PRIORITY_HIGH_IDLE+30, _update_errors_cb, self->sphere, NULL); + //roam_sphere_update_errors(self->sphere); +#endif + _gis_opengl_end(self); + gdk_threads_leave(); +} -void on_state_changed(GisView *view, - gdouble x, gdouble y, gdouble z, GisOpenGL *self) +static gboolean on_idle(GisOpenGL *self) { - /* Reset clipping area and redraw */ - on_configure(NULL, NULL, self); - gis_opengl_redraw(self); + //g_debug("GisOpenGL: on_idle"); + gdk_threads_enter(); + _gis_opengl_begin(self); + if (roam_sphere_split_merge(self->sphere)) + gtk_widget_queue_draw(GTK_WIDGET(self)); + _gis_opengl_end(self); + gdk_threads_leave(); + return TRUE; } -/*********** - * Methods * - ***********/ -GisOpenGL *gis_opengl_new(GisWorld *world, GisView *view, GtkDrawingArea *drawing) + +/********************* + * GisViewer methods * + *********************/ +GisViewer *gis_opengl_new(GisPlugins *plugins) { g_debug("GisOpenGL: new"); - GisOpenGL *self = g_object_new(GIS_TYPE_OPENGL, NULL); - self->world = world; - self->view = view; - self->drawing = drawing; - g_object_ref(world); - g_object_ref(view); - g_object_ref(drawing); + GisViewer *self = g_object_new(GIS_TYPE_OPENGL, NULL); + self->plugins = plugins; + return self; +} + +static void gis_opengl_center_position(GisViewer *_self, gdouble lat, gdouble lon, gdouble elev) +{ + GisOpenGL *self = GIS_OPENGL(_self); + glRotatef(lon, 0, 1, 0); + glRotatef(-lat, 1, 0, 0); + glTranslatef(0, 0, elev2rad(elev)); +} + +static void gis_opengl_project(GisViewer *_self, + gdouble lat, gdouble lon, gdouble elev, + gdouble *px, gdouble *py, gdouble *pz) +{ + GisOpenGL *self = GIS_OPENGL(_self); + gdouble x, y, z; + lle2xyz(lat, lon, elev, &x, &y, &z); + gluProject(x, y, z, + self->sphere->view->model, + self->sphere->view->proj, + self->sphere->view->view, + px, py, pz); +} + +static void gis_opengl_render_tile(GisViewer *_self, GisTile *tile) +{ + GisOpenGL *self = GIS_OPENGL(_self); + if (!tile || !tile->data) + return; + GList *triangles = roam_sphere_get_intersect(self->sphere, + tile->edge.n, tile->edge.s, tile->edge.e, tile->edge.w); + if (!triangles) + g_warning("GisOpenGL: render_tiles - No triangles to draw: edges=%f,%f,%f,%f", + tile->edge.n, tile->edge.s, tile->edge.e, tile->edge.w); + //g_message("rendering %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); + 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 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 xy[][3] = { + {(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}, + }; + + glEnable(GL_TEXTURE_2D); + glBindTexture(GL_TEXTURE_2D, *(guint*)tile->data); + 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(); + } + g_list_free(triangles); +} + +static void gis_opengl_render_tiles(GisViewer *_self, GisTile *tile) +{ + GisOpenGL *self = GIS_OPENGL(_self); + /* Only render children if possible */ + gboolean has_children = TRUE; + GisTile *child; + gis_tile_foreach(tile, child) + if (!child || !child->data) + has_children = FALSE; + if (has_children) + /* Only render children */ + gis_tile_foreach(tile, child) + gis_opengl_render_tiles(_self, child); + else + /* No children, render this tile */ + gis_opengl_render_tile(_self, tile); +} + +static void gis_opengl_set_height_func(GisViewer *_self, GisTile *tile, + RoamHeightFunc height_func, gpointer user_data, gboolean update) +{ + GisOpenGL *self = GIS_OPENGL(_self); + if (!tile) + return; + /* TODO: get points? */ + GList *triangles = roam_sphere_get_intersect(self->sphere, + tile->edge.n, tile->edge.s, tile->edge.e, tile->edge.w); + for (GList *cur = triangles; cur; cur = cur->next) { + RoamTriangle *tri = cur->data; + RoamPoint *points[] = {tri->p.l, tri->p.m, tri->p.r, tri->split}; + for (int i = 0; i < G_N_ELEMENTS(points); i++) { + points[i]->height_func = height_func; + points[i]->height_data = user_data; + roam_point_update_height(points[i]); + } + } + g_list_free(triangles); +} + +static void _gis_opengl_clear_height_func_rec(RoamTriangle *root) +{ + if (!root) + return; + RoamPoint *points[] = {root->p.l, root->p.m, root->p.r, root->split}; + for (int i = 0; i < G_N_ELEMENTS(points); i++) { + points[i]->height_func = NULL; + points[i]->height_data = NULL; + roam_point_update_height(points[i]); + } + _gis_opengl_clear_height_func_rec(root->kids[0]); + _gis_opengl_clear_height_func_rec(root->kids[1]); +} + +static void gis_opengl_clear_height_func(GisViewer *_self) +{ + GisOpenGL *self = GIS_OPENGL(_self); + for (int i = 0; i < G_N_ELEMENTS(self->sphere->roots); i++) + _gis_opengl_clear_height_func_rec(self->sphere->roots[i]); +} + +static void gis_opengl_begin(GisViewer *_self) +{ + g_assert(GIS_IS_OPENGL(_self)); + _gis_opengl_begin(GIS_OPENGL(_self)); +} + +static void gis_opengl_end(GisViewer *_self) +{ + g_assert(GIS_IS_OPENGL(_self)); + _gis_opengl_end(GIS_OPENGL(_self)); +} +/**************** + * GObject code * + ****************/ +G_DEFINE_TYPE(GisOpenGL, gis_opengl, GIS_TYPE_VIEWER); +static void gis_opengl_init(GisOpenGL *self) +{ + g_debug("GisOpenGL: init"); /* OpenGL setup */ GdkGLConfig *glconfig = gdk_gl_config_new_by_mode( GDK_GL_MODE_RGBA | GDK_GL_MODE_DEPTH | GDK_GL_MODE_DOUBLE | GDK_GL_MODE_ALPHA); if (!glconfig) g_error("Failed to create glconfig"); - if (!gtk_widget_set_gl_capability(GTK_WIDGET(self->drawing), + if (!gtk_widget_set_gl_capability(GTK_WIDGET(self), glconfig, NULL, TRUE, GDK_GL_RGBA_TYPE)) g_error("GL lacks required capabilities"); + g_object_unref(glconfig); - g_signal_connect(self->view, "location-changed", G_CALLBACK(on_state_changed), self); - g_signal_connect(self->view, "rotation-changed", G_CALLBACK(on_state_changed), self); + gtk_widget_set_size_request(GTK_WIDGET(self), 600, 550); + gtk_widget_set_events(GTK_WIDGET(self), + GDK_BUTTON_PRESS_MASK | + GDK_ENTER_NOTIFY_MASK | + GDK_KEY_PRESS_MASK); + g_object_set(self, "can-focus", TRUE, NULL); - g_signal_connect(self->drawing, "map-event", G_CALLBACK(on_map), self); - g_signal_connect(self->drawing, "configure-event", G_CALLBACK(on_configure), self); - g_signal_connect(self->drawing, "expose-event", G_CALLBACK(on_expose), self); + self->sphere = roam_sphere_new(self); - g_signal_connect(self->drawing, "button-press-event", G_CALLBACK(on_button_press), self); - g_signal_connect(self->drawing, "enter-notify-event", G_CALLBACK(on_button_press), self); - g_signal_connect(self->drawing, "key-press-event", G_CALLBACK(on_key_press), self); - return self; -} - -void gis_opengl_redraw(GisOpenGL *self) -{ - g_debug("GisOpenGL: gl_redraw"); - gtk_widget_queue_draw(GTK_WIDGET(self->drawing)); -} -void gis_opengl_begin(GisOpenGL *self) -{ - g_assert(GIS_IS_OPENGL(self)); +#ifndef ROAM_DEBUG + self->sm_source[0] = g_timeout_add_full(G_PRIORITY_HIGH_IDLE+30, 33, (GSourceFunc)on_idle, self, NULL); + self->sm_source[1] = g_timeout_add_full(G_PRIORITY_HIGH_IDLE+10, 500, (GSourceFunc)on_idle, self, NULL); +#endif - GdkGLContext *glcontext = gtk_widget_get_gl_context(GTK_WIDGET(self->drawing)); - GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(GTK_WIDGET(self->drawing)); + g_signal_connect(self, "realize", G_CALLBACK(on_realize), NULL); + g_signal_connect(self, "configure-event", G_CALLBACK(on_configure), NULL); + g_signal_connect(self, "expose-event", G_CALLBACK(on_expose), NULL); - if (!gdk_gl_drawable_gl_begin(gldrawable, glcontext)) - g_assert_not_reached(); + g_signal_connect(self, "key-press-event", G_CALLBACK(on_key_press), NULL); - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + g_signal_connect(self, "location-changed", G_CALLBACK(on_view_changed), NULL); + g_signal_connect(self, "rotation-changed", G_CALLBACK(on_view_changed), NULL); } -void gis_opengl_end(GisOpenGL *self) +static void gis_opengl_dispose(GObject *_self) { - g_assert(GIS_IS_OPENGL(self)); - GdkGLDrawable *gldrawable = gdk_gl_drawable_get_current(); - gdk_gl_drawable_gl_end(gldrawable); + g_debug("GisOpenGL: dispose"); + GisOpenGL *self = GIS_OPENGL(_self); + if (self->sm_source[0]) { + g_source_remove(self->sm_source[0]); + self->sm_source[0] = 0; + } + if (self->sm_source[1]) { + g_source_remove(self->sm_source[1]); + self->sm_source[1] = 0; + } + if (self->sphere) { + roam_sphere_free(self->sphere); + self->sphere = NULL; + } + G_OBJECT_CLASS(gis_opengl_parent_class)->dispose(_self); } -void gis_opengl_flush(GisOpenGL *self) +static void gis_opengl_finalize(GObject *_self) { - g_assert(GIS_IS_OPENGL(self)); - GdkGLDrawable *gldrawable = gdk_gl_drawable_get_current(); - if (gdk_gl_drawable_is_double_buffered(gldrawable)) - gdk_gl_drawable_swap_buffers(gldrawable); - else - glFlush(); - gdk_gl_drawable_gl_end(gldrawable); + g_debug("GisViewer: finalize"); + GisOpenGL *self = GIS_OPENGL(_self); + if (self->canvas) { + cairo_surface_destroy(cairo_get_target(self->canvas)); + cairo_destroy(self->canvas); + self->canvas = NULL; + } + G_OBJECT_CLASS(gis_opengl_parent_class)->finalize(_self); +} +static void gis_opengl_class_init(GisOpenGLClass *klass) +{ + g_debug("GisOpenGL: class_init"); + GObjectClass *gobject_class = G_OBJECT_CLASS(klass); + gobject_class->dispose = gis_opengl_dispose; + + GisViewerClass *viewer_class = GIS_VIEWER_CLASS(klass); + viewer_class->center_position = gis_opengl_center_position; + viewer_class->project = gis_opengl_project; + viewer_class->clear_height_func = gis_opengl_clear_height_func; + viewer_class->set_height_func = gis_opengl_set_height_func; + viewer_class->render_tile = gis_opengl_render_tile; + viewer_class->render_tiles = gis_opengl_render_tiles; + viewer_class->begin = gis_opengl_begin; + viewer_class->end = gis_opengl_end; }