*/
#include <config.h>
+#include <GL/gl.h>
#include "gis-marker.h"
-/*************
- * GisMarker *
- *************/
/**
* gis_marker_new:
* @label: a short description of the marker
marker->yoff = HEIGHT-(RADIUS+OUTLINE);
marker->label = g_strdup(label);
marker->cairo = cairo_create(cairo_image_surface_create(
- CAIRO_FORMAT_ARGB32, WIDTH, HEIGHT));
+ CAIRO_FORMAT_ARGB32, WIDTH, HEIGHT));
cairo_select_font_face(marker->cairo, "sans-serif",
CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_BOLD);
cairo_move_to(marker->cairo, marker->xoff+4, marker->yoff-8);
cairo_show_text(marker->cairo, marker->label);
+
+ /* Load GL texture */
+ 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(cairo_get_target(marker->cairo)));
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+
return marker;
}
+/* Drawing */
+static void gis_marker_draw(GisObject *_marker, GisOpenGL *opengl)
+{
+ GisMarker *marker = GIS_MARKER(_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();
+}
+
+/* GObject code */
G_DEFINE_TYPE(GisMarker, gis_marker, GIS_TYPE_OBJECT);
static void gis_marker_init(GisMarker *marker)
{
static void gis_marker_finalize(GObject *_marker)
{
- GisMarker *marker = GIS_MARKER(_marker);
//g_debug("GisMarker: finalize - %s", marker->label);
+ GisMarker *marker = GIS_MARKER(_marker);
+ glDeleteTextures(1, &marker->tex);
cairo_surface_t *surface = cairo_get_target(marker->cairo);
cairo_surface_destroy(surface);
cairo_destroy(marker->cairo);
static void gis_marker_class_init(GisMarkerClass *klass)
{
- G_OBJECT_CLASS(klass)->finalize = gis_marker_finalize;
+ g_debug("GisMarker: class_init");
+ GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
+ gobject_class->finalize = gis_marker_finalize;
+
+ GisObjectClass *object_class = GIS_OBJECT_CLASS(klass);
+ object_class->draw = gis_marker_draw;
}