1 files changed, 236 insertions, 0 deletions

diff --git a/src/others/mimesh/g3dviewer-0.2.99.4/src/glarea.c b/src/others/mimesh/g3dviewer-0.2.99.4/src/glarea.c
new file mode 100644
index 0000000..dda4275
--- /dev/null
+++ b/src/others/mimesh/g3dviewer-0.2.99.4/src/glarea.c
@@ -0,0 +1,236 @@
+/* $Id: glarea.c 47 2006-05-22 17:53:38Z mmmaddd $ */
+
+/*
+        G3DViewer - 3D object viewer
+
+        Copyright (C) 2005, 2006  Markus Dahms <mad@automagically.de>
+
+    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 2 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, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#ifdef HAVE_CONFIG_H
+#       include <config.h>
+#endif
+
+#include <stdlib.h>
+
+#include <gtk/gtk.h>
+#include <gtk/gtkgl.h>
+#include <GL/gl.h>
+
+#include "main.h"
+#include "gl.h"
+#include "glarea.h"
+#include "gui_glade.h"
+#include "trackball.h"
+
+/*
+ * updates glarea widget (redraw)
+ */
+void glarea_update(GtkWidget *glarea)
+{
+        gtk_widget_queue_draw_area(glarea, 0, 0,
+                glarea->allocation.width, glarea->allocation.height);
+}
+
+/*
+ * handler for "expose" event
+ */
+gint glarea_expose(GtkWidget *widget, GdkEventExpose *event)
+{
+        GdkGLDrawable *gldrawable;
+        GdkGLContext *glcontext;
+        G3DViewer *viewer = (G3DViewer*)g_object_get_data(G_OBJECT(widget),
+                "viewer");
+
+        if(event->count > 0) return TRUE;
+
+        gldrawable = gtk_widget_get_gl_drawable(widget);
+        glcontext = gtk_widget_get_gl_context(widget);
+
+        if(!gdk_gl_drawable_gl_begin(gldrawable, glcontext)) return TRUE;
+
+        gl_draw(viewer->glflags, viewer->zoom, viewer->aspect, viewer->bgcolor,
+                viewer->quat, viewer->model);
+
+        gdk_gl_drawable_swap_buffers(gldrawable);
+        gdk_gl_drawable_gl_end(gldrawable);
+
+        return TRUE;
+}
+
+/*
+ * handler for "configure" event
+ */
+gint glarea_configure(GtkWidget *widget, GdkEventConfigure *event)
+{
+        GdkGLDrawable *gldrawable;
+        GdkGLContext *glcontext;
+        G3DViewer *viewer;
+
+        gldrawable = gtk_widget_get_gl_drawable(widget);
+        glcontext = gtk_widget_get_gl_context(widget);
+
+        if(!gdk_gl_drawable_gl_begin(gldrawable, glcontext)) return TRUE;
+
+        viewer = (G3DViewer*)g_object_get_data(G_OBJECT(widget), "viewer");
+        glViewport(0,0, widget->allocation.width, widget->allocation.height);
+        viewer->aspect = (gfloat)widget->allocation.width /
+                (gfloat)widget->allocation.height;
+#if DEBUG > 3
+                g_printerr("DEBUG: glarea_configure (%f)\n", viewer->aspect);
+#endif
+
+        gdk_gl_drawable_gl_end(gldrawable);
+
+        return TRUE;
+}
+
+/*
+ * handler for "destroy" event
+ */
+gint glarea_destroy(GtkWidget *widget)
+{
+        G3DViewer *viewer = (G3DViewer*)g_object_get_data(G_OBJECT(widget),
+                "viewer");
+        if(viewer->interface.glarea)
+        {
+                /* FIXME: */
+        }
+
+        return TRUE;
+}
+
+/*
+ * handler for "scroll" event (mouse wheel)
+ */
+gint glarea_scroll(GtkWidget *widget, GdkEventScroll *event)
+{
+        GdkRectangle area;
+        G3DViewer *viewer = (G3DViewer*)g_object_get_data(G_OBJECT(widget),
+                "viewer");
+
+#define ZOOM_BY 10
+        if(event->direction == GDK_SCROLL_DOWN) viewer->zoom += ZOOM_BY;
+        else viewer->zoom -= ZOOM_BY;
+#undef ZOOM_BY
+
+        area.x = 0;
+        area.y = 0;
+        area.width = widget->allocation.width;
+        area.height = widget->allocation.height;
+
+        if(viewer->zoom < 1)   viewer->zoom = 1;
+        if(viewer->zoom > 120) viewer->zoom = 120;
+
+        glarea_update(widget);
+
+        return FALSE;
+}
+
+/*
+ * handler for "button pressed" event
+ */
+gint glarea_button_pressed(GtkWidget *widget, GdkEventButton *event)
+{
+        G3DViewer *viewer = (G3DViewer*)g_object_get_data(G_OBJECT(widget),
+                "viewer");
+
+        /* left mouse buttom: rotate object */
+        if(event->button == 1)
+        {
+                viewer->mouse.beginx = event->x;
+                viewer->mouse.beginy = event->y;
+                return TRUE;
+        }
+        /* right mouse button: pop-up menu */
+        else if(event->button == 3)
+        {
+                if(event->type == GDK_BUTTON_PRESS)
+                {
+                        GtkWidget *menu =
+                                (GtkWidget*)g_object_get_data(G_OBJECT(widget),
+                                        "menu");
+                        gtk_menu_popup(GTK_MENU(menu), NULL, NULL, NULL, NULL,
+                                event->button, event->time);
+                        return TRUE;
+                }
+        }
+
+        return FALSE;
+}
+
+/*
+ * handler for "motion notify" event
+ */
+gint glarea_motion_notify(GtkWidget *widget, GdkEventMotion *event)
+{
+        gint x, y;
+        gchar *text;
+        GdkRectangle area;
+        GdkModifierType state;
+        G3DViewer *viewer = (G3DViewer*)g_object_get_data(G_OBJECT(widget),
+                "viewer");
+
+        if(event->is_hint)
+                gdk_window_get_pointer(event->window, &x, &y, &state);
+        else
+        {
+                x = event->x;
+                y = event->y;
+                state = event->state;
+        }
+
+        area.x = 0;
+        area.y = 0;
+        area.width = widget->allocation.width;
+        area.height = widget->allocation.height;
+
+        /* left button pressed */
+        if(state & GDK_BUTTON1_MASK)
+        {
+                gfloat spin_quat[4];
+                trackball(spin_quat,
+                        (2.0*viewer->mouse.beginx -              area.width) / area.width,
+                        (            area.height - 2.0*viewer->mouse.beginy) / area.height,
+                        (                  2.0*x -              area.width) / area.width,
+                        (            area.height -                   2.0*y) / area.height);
+                add_quats(spin_quat, viewer->quat, viewer->quat);
+
+                text = g_strdup_printf("quat: %-.2f, %-.2f, %-.2f, %-.2f",
+                        viewer->quat[0], viewer->quat[1],
+                        viewer->quat[2], viewer->quat[3]);
+                gui_glade_status(viewer, text);
+                g_free(text);
+
+                glarea_update(widget);
+        }
+
+        /* middle mouse button */
+        if(state & GDK_BUTTON2_MASK)
+        {
+                viewer->zoom +=
+                        ((y - viewer->mouse.beginy) / (gfloat)area.height) * 40;
+                if(viewer->zoom < 1)   viewer->zoom = 1;
+                if(viewer->zoom > 120) viewer->zoom = 120;
+
+                glarea_update(widget);
+        }
+        viewer->mouse.beginx = x;
+        viewer->mouse.beginy = y;
+
+        return TRUE;
+}
+