X-Git-Url: http://pileus.org/git/?p=grits;a=blobdiff_plain;f=src%2Fgis%2Fgis-opengl.c;h=e1abb07d6dcf24b70aa9cf49a6762be0c895315c;hp=bdcaf404bf0c59da1ce6a96cb154c1dc3d757fc7;hb=d01fb11de5bcf91224348bf41abb6788d0af2545;hpb=372f8b7c6c2f487508fd345a83b92c709c94baa1
diff --git a/src/gis/gis-opengl.c b/src/gis/gis-opengl.c
index bdcaf40..e1abb07 100644
--- a/src/gis/gis-opengl.c
+++ b/src/gis/gis-opengl.c
@@ -15,6 +15,10 @@
* 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
@@ -24,237 +28,504 @@
#include
#include "gis-opengl.h"
+#include "roam.h"
+#include "wms.h"
-/****************
- * GObject code *
- ****************/
-G_DEFINE_TYPE(GisOpenGL, gis_opengl, G_TYPE_OBJECT);
-static void gis_opengl_init(GisOpenGL *self)
-{
- g_debug("GisOpenGL: init");
-}
-static GObject *gis_opengl_constructor(GType gtype, guint n_properties,
- GObjectConstructParam *properties)
+#define FOV_DIST 2000.0
+#define MPPX(dist) (4*dist/FOV_DIST)
+
+
+/*************
+ * ROAM Code *
+ *************/
+void roam_queue_draw(WmsCacheNode *node, gpointer _self)
{
- g_debug("GisOpengl: constructor");
- GObjectClass *parent_class = G_OBJECT_CLASS(gis_opengl_parent_class);
- return parent_class->constructor(gtype, n_properties, properties);
+ gtk_widget_queue_draw(GTK_WIDGET(_self));
}
-static void gis_opengl_dispose(GObject *gobject)
+
+void roam_height_func(RoamPoint *point, gpointer _self)
{
- g_debug("GisOpenGL: dispose");
- GisOpenGL *self = GIS_OPENGL(gobject);
- if (self->world) {
- g_object_unref(self->world);
- self->world = NULL;
+ GisOpenGL *self = _self;
+
+ gdouble cam_lle[3], cam_xyz[3];
+ gis_view_get_location(self->view, &cam_lle[0], &cam_lle[1], &cam_lle[2]);
+ lle2xyz(cam_lle[0], cam_lle[1], cam_lle[2], &cam_xyz[0], &cam_xyz[1], &cam_xyz[2]);
+
+ gdouble lat, lon, elev;
+ xyz2lle(point->x, point->y, point->z, &lat, &lon, &elev);
+
+ gdouble res = MPPX(distd(cam_xyz, (double*)point));
+ //g_message("lat=%f, lon=%f, res=%f", lat, lon, res);
+
+ WmsCacheNode *node = wms_info_fetch_cache(self->srtm, res, lat, lon, NULL, roam_queue_draw, self);
+
+ if (node) {
+ WmsBil *bil = node->data;
+
+ gint w = bil->width;
+ gint h = bil->height;
+
+ gdouble xmin = node->latlon[0];
+ gdouble ymin = node->latlon[1];
+ gdouble xmax = node->latlon[2];
+ gdouble ymax = node->latlon[3];
+
+ gdouble xdist = xmax - xmin;
+ gdouble ydist = ymax - ymin;
+
+ gdouble x = (lon-xmin)/xdist * w;
+ gdouble y = (1-(lat-ymin)/ydist) * h;
+
+ gdouble x_rem = x - (int)x;
+ gdouble y_rem = y - (int)y;
+ guint x_flr = (int)x;
+ guint y_flr = (int)y;
+
+ /* TODO: Fix interpolation at edges:
+ * - Pad these at the edges instead of wrapping/truncating
+ * - Figure out which pixels to index (is 0,0 edge, center, etc) */
+ gint16 px00 = bil->data[MIN((y_flr ),h-1)*w + MIN((x_flr ),w-1)];
+ gint16 px10 = bil->data[MIN((y_flr ),h-1)*w + MIN((x_flr+1),w-1)];
+ gint16 px01 = bil->data[MIN((y_flr+1),h-1)*w + MIN((x_flr ),w-1)];
+ gint16 px11 = bil->data[MIN((y_flr+1),h-1)*w + MIN((x_flr+1),w-1)];
+
+ elev = px00 * (1-x_rem) * (1-y_rem) +
+ px10 * ( x_rem) * (1-y_rem) +
+ px01 * (1-x_rem) * ( y_rem) +
+ px11 * ( x_rem) * ( y_rem);
+ //g_message("elev=%f -- %hd %hd %hd %hd",
+ // elev, px00, px10, px01, px11);
+ } else {
+ elev = 0;
}
- if (self->view) {
- g_object_unref(self->view);
- self->view = NULL;
- }
- if (self->drawing) {
- g_object_unref(self->drawing);
- self->drawing = NULL;
- }
- G_OBJECT_CLASS(gis_opengl_parent_class)->dispose(gobject);
-}
-static void gis_opengl_finalize(GObject *gobject)
-{
- g_debug("GisOpenGL: finalize");
- G_OBJECT_CLASS(gis_opengl_parent_class)->finalize(gobject);
- gtk_main_quit();
-}
-static void gis_opengl_class_init(GisOpenGLClass *klass)
-{
- 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;
+ lle2xyz(lat, lon, elev, &point->x, &point->y, &point->z);
}
-/*************
- * Callbacks *
- *************/
-gboolean on_button_press(GtkWidget *widget, GdkEventButton *event, GisOpenGL *self)
+void roam_tri_func(RoamTriangle *tri, gpointer _self)
{
- g_debug("GisOpenGL: on_drawing_button_press - Grabbing focus");
- gtk_widget_grab_focus(GTK_WIDGET(self->drawing));
- return TRUE;
+ GisOpenGL *self = _self;
+ if (tri->error < 0) return;
+
+ /* Get lat-lon min and maxes for the triangle */
+ gdouble lat[3], lon[3], elev[3];
+ xyz2lle(tri->p.r->x, tri->p.r->y, tri->p.r->z, &lat[0], &lon[0], &elev[0]);
+ xyz2lle(tri->p.m->x, tri->p.m->y, tri->p.m->z, &lat[1], &lon[1], &elev[1]);
+ xyz2lle(tri->p.l->x, tri->p.l->y, tri->p.l->z, &lat[2], &lon[2], &elev[2]);
+ gdouble lat_max = MAX(MAX(lat[0], lat[1]), lat[2]);
+ gdouble lat_min = MIN(MIN(lat[0], lat[1]), lat[2]);
+ gdouble lon_max = MAX(MAX(lon[0], lon[1]), lon[2]);
+ gdouble lon_min = MIN(MIN(lon[0], lon[1]), lon[2]);
+
+ /* Get target resolution */
+ gdouble cam_lle[3], cam_xyz[3];
+ gis_view_get_location(self->view, &cam_lle[0], &cam_lle[1], &cam_lle[2]);
+ lle2xyz(cam_lle[0], cam_lle[1], cam_lle[2], &cam_xyz[0], &cam_xyz[1], &cam_xyz[2]);
+ gdouble distr = distd(cam_xyz, (double*)tri->p.r);
+ gdouble distm = distd(cam_xyz, (double*)tri->p.m);
+ gdouble distl = distd(cam_xyz, (double*)tri->p.l);
+ double res = MPPX(MIN(MIN(distr, distm), distl));
+
+ /* TODO:
+ * - Fetch needed textures, not all corners
+ * - Also fetch center textures that aren't touched by a corner
+ * - Idea: send {lat,lon}{min,max} to fetch_cache and handle it in the recursion */
+ /* Fetch textures */
+ WmsCacheNode *textures[4] = {
+ wms_info_fetch_cache(self->bmng, res, lat_min, lon_min, NULL, roam_queue_draw, self),
+ wms_info_fetch_cache(self->bmng, res, lat_max, lon_min, NULL, roam_queue_draw, self),
+ wms_info_fetch_cache(self->bmng, res, lat_min, lon_max, NULL, roam_queue_draw, self),
+ wms_info_fetch_cache(self->bmng, res, lat_max, lon_max, NULL, roam_queue_draw, self),
+ };
+
+ /* Vertex color for hieght map viewing, 8848m == Everest */
+ gfloat colors[] = {
+ (elev[0]-EARTH_R)/8848,
+ (elev[1]-EARTH_R)/8848,
+ (elev[2]-EARTH_R)/8848,
+ };
+
+ /* Draw each texture */
+ /* TODO: Prevent double exposure when of hi-res textures on top of
+ * low-res textures when some high-res textures are not yet loaded. */
+ glBlendFunc(GL_ONE, GL_ZERO);
+ for (int i = 0; i < 4; i++) {
+ /* Skip missing textures */
+ if (textures[i] == NULL)
+ continue;
+ /* Skip already drawn textures */
+ switch (i) {
+ case 3: if (textures[i] == textures[2]) continue;
+ case 2: if (textures[i] == textures[1]) continue;
+ case 1: if (textures[i] == textures[0]) continue;
+ }
+
+ WmsCacheNode *node = textures[i];
+
+ if (node->latlon[0] == -180) {
+ 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;
+ }
+ } else if (node->latlon[2] == 180.0) {
+ if (lon[0] < -90) lon[0] += 360;
+ if (lon[1] < -90) lon[1] += 360;
+ if (lon[2] < -90) lon[2] += 360;
+ }
+
+ gdouble xmin = node->latlon[0];
+ gdouble ymin = node->latlon[1];
+ gdouble xmax = node->latlon[2];
+ gdouble ymax = node->latlon[3];
+
+ gdouble xdist = xmax - xmin;
+ gdouble ydist = ymax - ymin;
+
+ gdouble xy[][3] = {
+ {(lon[0]-xmin)/xdist, 1-(lat[0]-ymin)/ydist},
+ {(lon[1]-xmin)/xdist, 1-(lat[1]-ymin)/ydist},
+ {(lon[2]-xmin)/xdist, 1-(lat[2]-ymin)/ydist},
+ };
+
+ glBindTexture(GL_TEXTURE_2D, *(guint*)node->data);
+
+ glBegin(GL_TRIANGLES);
+ glColor3fv(colors); glNormal3dv(tri->p.r->norm); glTexCoord2dv(xy[0]); glVertex3dv((double*)tri->p.r);
+ glColor3fv(colors); glNormal3dv(tri->p.m->norm); glTexCoord2dv(xy[1]); glVertex3dv((double*)tri->p.m);
+ glColor3fv(colors); glNormal3dv(tri->p.l->norm); glTexCoord2dv(xy[2]); glVertex3dv((double*)tri->p.l);
+ glEnd();
+ glBlendFunc(GL_ONE, GL_ONE);
+ }
}
-gboolean on_key_press(GtkWidget *widget, GdkEventKey *event, GisOpenGL *self)
+
+static void set_camera(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();
+ double lat, lon, elev, rx, ry, rz;
+ gis_view_get_location(self->view, &lat, &lon, &elev);
+ gis_view_get_rotation(self->view, &rx, &ry, &rz);
+ glRotatef(rx, 1, 0, 0);
+ glRotatef(rz, 0, 0, 1);
+ glTranslatef(0, 0, -elev2rad(elev));
+ glRotatef(lat, 1, 0, 0);
+ glRotatef(-lon, 0, 1, 0);
}
-
-gboolean on_map(GtkWidget *drawing, GdkEventConfigure *event, GisOpenGL *self)
+static void set_visuals(GisOpenGL *self)
{
- g_debug("GisOpenGL: on_map");
+ /* Lighting */
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
+ float light_ambient[] = {0.2f, 0.2f, 0.2f, 1.0f};
+ float light_diffuse[] = {5.0f, 5.0f, 5.0f, 1.0f};
+ 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 */
+ set_camera(self);
/* Misc */
- glEnable(GL_BLEND);
+ gdouble lat, lon, elev;
+ gis_view_get_location(self->view, &lat, &lon, &elev);
+ gdouble rg = MAX(0, 1-(elev/20000));
+ gdouble blue = MAX(0, 1-(elev/50000));
+ glClearColor(MIN(0.8,rg), MIN(0.8,rg), MIN(1,blue), 1.0f);
+
+ 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);
+ glCullFace(GL_BACK);
+ glEnable(GL_CULL_FACE);
- /* 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);
}
-gboolean on_configure(GtkWidget *drawing, GdkEventConfigure *event, GisOpenGL *self)
+
+/*************
+ * Callbacks *
+ *************/
+static void on_realize(GisOpenGL *self, gpointer _)
+{
+ set_visuals(self);
+}
+static gboolean on_configure(GisOpenGL *self, GdkEventConfigure *event, gpointer _)
{
g_debug("GisOpenGL: on_confiure");
gis_opengl_begin(self);
- double x, y, z;
- gis_view_get_location(self->view, &x, &y, &z);
-
- /* 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;
glViewport(0, 0, width, height);
- /* Perspective */
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
- double ang = atan((height/2)/500);
+ double ang = atan(height/FOV_DIST);
+ gluPerspective(rad2deg(ang)*2, width/height, 1, 20*EARTH_R);
- //gluPerspective(r2d(ang)*2, width/height, -z-20, -z+20);
- gluPerspective(r2d(ang)*2, width/height, 1, 500*1000);
+ if (self->sphere)
+ roam_sphere_update_errors(self->sphere);
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);
- 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);
+ set_visuals(self);
+ glEnable(GL_TEXTURE_2D);
+ roam_sphere_draw(self->sphere);
- /* Expose plugins */
- gis_plugins_foreach(self->plugins, G_CALLBACK(gis_plugin_expose), NULL);
+ //glDisable(GL_TEXTURE_2D);
+ //glEnable(GL_COLOR_MATERIAL);
+ //glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+ //roam_sphere_draw(self->sphere);
+ //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);
+
+ gis_plugins_foreach(self->plugins, G_CALLBACK(on_expose_plugin), self);
+
+ set_visuals(self);
gis_opengl_end(self);
gis_opengl_flush(self);
g_debug("GisOpenGL: on_expose - end\n");
return FALSE;
}
-void on_state_changed(GisView *view,
- gdouble x, gdouble y, gdouble z, GisOpenGL *self)
+static gboolean on_button_press(GisOpenGL *self, GdkEventButton *event, gpointer _)
{
- /* Reset clipping area and redraw */
- on_configure(NULL, NULL, self);
+ g_debug("GisOpenGL: on_button_press - Grabbing focus");
+ gtk_widget_grab_focus(GTK_WIDGET(self));
+ return TRUE;
+}
+
+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);
+
+ double lat, lon, elev, pan;
+ gis_view_get_location(self->view, &lat, &lon, &elev);
+ pan = MIN(elev/(EARTH_R/2), 30);
+ guint kv = event->keyval;
+ if (kv == GDK_Left || kv == GDK_h) gis_view_pan(self->view, 0, -pan, 0);
+ else if (kv == GDK_Down || kv == GDK_j) gis_view_pan(self->view, -pan, 0, 0);
+ else if (kv == GDK_Up || kv == GDK_k) gis_view_pan(self->view, pan, 0, 0);
+ else if (kv == GDK_Right || kv == GDK_l) gis_view_pan(self->view, 0, pan, 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, 0, -10);
+ 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, 0, 10);
+ return TRUE;
+}
+
+static void on_view_changed(GisView *view,
+ gdouble _1, gdouble _2, gdouble _3, GisOpenGL *self)
+{
+ gis_opengl_begin(self);
+ set_visuals(self);
+ roam_sphere_update_errors(self->sphere);
gis_opengl_redraw(self);
+ gis_opengl_end(self);
+}
+
+static gboolean on_idle(GisOpenGL *self)
+{
+ gis_opengl_begin(self);
+ if (roam_sphere_split_merge(self->sphere))
+ gis_opengl_redraw(self);
+ gis_opengl_end(self);
+ return TRUE;
}
+
/***********
* Methods *
***********/
-GisOpenGL *gis_opengl_new(GisWorld *world, GisView *view, GtkDrawingArea *drawing)
+GisOpenGL *gis_opengl_new(GisWorld *world, GisView *view, GisPlugins *plugins)
{
g_debug("GisOpenGL: new");
GisOpenGL *self = g_object_new(GIS_TYPE_OPENGL, NULL);
self->world = world;
self->view = view;
- self->drawing = drawing;
+ self->plugins = plugins;
g_object_ref(world);
g_object_ref(view);
- g_object_ref(drawing);
- /* 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),
- glconfig, NULL, TRUE, GDK_GL_RGBA_TYPE))
- g_error("GL lacks required capabilities");
+ g_signal_connect(self->view, "location-changed", G_CALLBACK(on_view_changed), self);
+ g_signal_connect(self->view, "rotation-changed", G_CALLBACK(on_view_changed), self);
- 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);
+ /* TODO: update point eights sometime later so we have heigh-res heights for them */
+ self->sphere = roam_sphere_new(roam_tri_func, roam_height_func, self);
- 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);
+ return g_object_ref(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_center_position(GisOpenGL *self, gdouble lat, gdouble lon, gdouble elev)
+{
+ set_camera(self);
+ glRotatef(lon, 0, 1, 0);
+ glRotatef(-lat, 1, 0, 0);
+ glTranslatef(0, 0, elev2rad(elev));
}
void gis_opengl_redraw(GisOpenGL *self)
{
g_debug("GisOpenGL: gl_redraw");
- gtk_widget_queue_draw(GTK_WIDGET(self->drawing));
+ gtk_widget_queue_draw(GTK_WIDGET(self));
}
void gis_opengl_begin(GisOpenGL *self)
{
g_assert(GIS_IS_OPENGL(self));
- GdkGLContext *glcontext = gtk_widget_get_gl_context(GTK_WIDGET(self->drawing));
- GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(GTK_WIDGET(self->drawing));
+ 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();
-
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
}
void gis_opengl_end(GisOpenGL *self)
{
g_assert(GIS_IS_OPENGL(self));
- GdkGLDrawable *gldrawable = gdk_gl_drawable_get_current();
+ GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(GTK_WIDGET(self));
gdk_gl_drawable_gl_end(gldrawable);
}
void gis_opengl_flush(GisOpenGL *self)
{
g_assert(GIS_IS_OPENGL(self));
- GdkGLDrawable *gldrawable = gdk_gl_drawable_get_current();
+ GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(GTK_WIDGET(self));
if (gdk_gl_drawable_is_double_buffered(gldrawable))
gdk_gl_drawable_swap_buffers(gldrawable);
else
glFlush();
gdk_gl_drawable_gl_end(gldrawable);
}
+
+
+/****************
+ * GObject code *
+ ****************/
+G_DEFINE_TYPE(GisOpenGL, gis_opengl, GTK_TYPE_DRAWING_AREA);
+static void gis_opengl_init(GisOpenGL *self)
+{
+ g_debug("GisOpenGL: init");
+ self->bmng = wms_info_new_for_bmng(NULL, NULL);
+ self->srtm = wms_info_new_for_srtm(NULL, NULL);
+
+ /* 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),
+ glconfig, NULL, TRUE, GDK_GL_RGBA_TYPE))
+ g_error("GL lacks required capabilities");
+ g_object_unref(glconfig);
+
+ 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);
+
+ self->sm_source = g_timeout_add(10, (GSourceFunc)on_idle, self);
+
+ 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);
+
+ g_signal_connect(self, "button-press-event", G_CALLBACK(on_button_press), NULL);
+ g_signal_connect(self, "enter-notify-event", G_CALLBACK(on_button_press), NULL);
+ g_signal_connect(self, "key-press-event", G_CALLBACK(on_key_press), NULL);
+}
+static GObject *gis_opengl_constructor(GType gtype, guint n_properties,
+ GObjectConstructParam *properties)
+{
+ g_debug("GisOpengl: 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 *_self)
+{
+ g_debug("GisOpenGL: dispose");
+ GisOpenGL *self = GIS_OPENGL(_self);
+ if (self->sm_source) {
+ g_source_remove(self->sm_source);
+ self->sm_source = 0;
+ }
+ if (self->sphere) {
+ roam_sphere_free(self->sphere);
+ self->sphere = NULL;
+ }
+ if (self->world) {
+ g_object_unref(self->world);
+ self->world = NULL;
+ }
+ if (self->view) {
+ g_object_unref(self->view);
+ self->view = NULL;
+ }
+ G_OBJECT_CLASS(gis_opengl_parent_class)->dispose(_self);
+}
+static void gis_opengl_finalize(GObject *_self)
+{
+ g_debug("GisOpenGL: finalize");
+ GisOpenGL *self = GIS_OPENGL(_self);
+ wms_info_free(self->bmng);
+ wms_info_free(self->srtm);
+ 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->constructor = gis_opengl_constructor;
+ gobject_class->dispose = gis_opengl_dispose;
+ gobject_class->finalize = gis_opengl_finalize;
+}