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GtkWidget * | gwy_gl_view_new () |
const gchar * | gwy_gl_view_get_setup_prefix () |
void | gwy_gl_view_set_setup_prefix () |
const gchar * | gwy_gl_view_get_data_key () |
void | gwy_gl_view_set_data_key () |
void | gwy_gl_view_set_ovlay () |
const gchar * | gwy_gl_view_get_gradient_key () |
void | gwy_gl_view_set_gradient_key () |
const gchar * | gwy_gl_view_get_material_key () |
void | gwy_gl_view_set_material_key () |
guint | gwy_gl_view_get_reduced_size () |
void | gwy_gl_view_set_reduced_size () |
GwyGLMovement | gwy_gl_view_get_movement_type () |
void | gwy_gl_view_set_movement_type () |
GdkPixbuf * | gwy_gl_view_get_pixbuf () |
GdkPixbuf * | gwy_gl_view_get_pixbuf_with_alpha () |
GwyGLLabel * | gwy_gl_view_get_label () |
GwyGLSetup * | gwy_gl_view_get_setup () |
GwyContainer * | gwy_gl_view_get_data () |
void | gwy_gl_view_get_scale_range () |
void | gwy_gl_view_set_scale_range () |
void | gwy_gl_view_class_disable_axis_drawing () |
const gchar * | gwy_gl_view_get_mask_key () |
void | gwy_gl_view_set_mask_key () |
GwyGLView displays a data field as a threedimensional heightfield using OpenGL. You can create a new OpenGL view for
a data container with gwy_gl_view_new()
. By default, it inherits properties like palette from data view settings, but supports separate settings -- see
gwy_gl_view_set_gradient_key()
et al.
GwyGLView allows the user to interactively rotate, scale, z-scale the data or move lights, depending on its movement state. There are no controls provided for mode change, you have to provide
some yourself and set the movement mode with gwy_gl_view_set_movement_type()
.
You have initialize GtkGLExt with gtk_gl_init_check()
and then Gwyddion's OpenGL with gwy_widgets_gl_init()
before
you can use GwyGLView. These functions may not always succeed, see their description for more. If OpenGL
initialization fails (possibly because its support was not compiled in) GwyGLView cannot be even instantiated.
GtkWidget *
gwy_gl_view_new (GwyContainer *data
);
Creates a new threedimensional OpenGL display of data
.
The widget is initialized from container data
.
const gchar *
gwy_gl_view_get_setup_prefix (GwyGLView *glview
);
Gets prefix identifying OpenGL view setup in the container.
void gwy_gl_view_set_setup_prefix (GwyGLView *glview
,const gchar *key
);
Sets the prefix of OpenGL view parameters in the container.
glview |
An OpenGL data view widget. |
|
key |
Container string prefix for keys identifying the view setup parameters. The GwyGLSetup is stored at key
|
const gchar *
gwy_gl_view_get_data_key (GwyGLView *glview
);
Gets the container key identifying the data field to visualize in an OpenGL view.
void gwy_gl_view_set_data_key (GwyGLView *glview
,const gchar *key
);
Sets the container key identifying the data field to visualize in an OpenGL view.
void gwy_gl_view_set_ovlay (GwyGLView *glview
,GwyPixmapLayer **ovlays
,guint novlays
);
Sets overlays for an OpenGL view.
const gchar *
gwy_gl_view_get_gradient_key (GwyGLView *glview
);
Gets the container key identifying the colour gradient used to visualize data in an OpenGL view.
void gwy_gl_view_set_gradient_key (GwyGLView *glview
,const gchar *key
);
Sets the container key identifying the color gradient to use to visualize data in an OpenGL view.
const gchar *
gwy_gl_view_get_material_key (GwyGLView *glview
);
Gets the key identifying the GL material used to visualize data in a 3D view.
void gwy_gl_view_set_material_key (GwyGLView *glview
,const gchar *key
);
Sets the container key of the GL material used to visualize data in an OpenGL view.
guint
gwy_gl_view_get_reduced_size (GwyGLView *glview
);
Returns the reduced data size of an OpenGL view.
See gwy_gl_view_set_reduced_size()
for details.
void gwy_gl_view_set_reduced_size (GwyGLView *glview
,guint reduced_size
);
Sets the reduced data size of an OpenGL view.
Data larger than reduced size may be shown downsampled during transforms and other changes to speed up the rendering. Final, full-size rendering is then performed after a timeout.
In case of the original data are not square, the reduced_size
is the greater size of the downsampled data, the
other dimension is proportional to the original size.
Changes in reduced size do not cause immediate redraw when an operation is pending and the view is shown in reduced size. It only affects future downsampling.
Note since 2.44 the reduced size has no influence because the OpenGL view does not downsample anything.
GwyGLMovement
gwy_gl_view_get_movement_type (GwyGLView *glview
);
Returns a movement type describing actual type of response on the mouse motion event.
void gwy_gl_view_set_movement_type (GwyGLView *glview
,GwyGLMovement movement
);
Sets the type of widget response on the mouse motion event.
GdkPixbuf *
gwy_gl_view_get_pixbuf (GwyGLView *glview
);
Copies the contents of the OpenGL view framebuffer to a GdkPixbuf.
The size of the pixbuf is indentical to the size of the widget.
GdkPixbuf *
gwy_gl_view_get_pixbuf_with_alpha (GwyGLView *glview
);
Creates a GdkPixbuf from the contents of the OpenGL view framebuffer, with transparent background.
The size of the pixbuf is indentical to the size of the widget.
The rendered surface is cut perfectly. However, if the scene contains also antialiased labels, these are cut in a way which currently only works with a white background.
GwyGLLabel * gwy_gl_view_get_label (GwyGLView *glview
,GwyGLViewLabel label
);
Gets requested 3D label object of an OpenGL view.
This is a convenience method that can be used instead of fetching the label object from the data container.
GwyGLSetup *
gwy_gl_view_get_setup (GwyGLView *glview
);
Gets the 3D setup object of an OpenGL view.
This is a convenience method that can be used instead of fetching the setup object from the data container.
GwyContainer *
gwy_gl_view_get_data (GwyGLView *glview
);
Returns the data container this OpenGL view displays.
void gwy_gl_view_get_scale_range (GwyGLView *glview
,gdouble *min_scale
,gdouble *max_scale
);
Obtains the minimum and maximum zoom of a 3D data view
void gwy_gl_view_set_scale_range (GwyGLView *glview
,gdouble min_scale
,gdouble max_scale
);
Sets the minimum and maximum zoom of a 3D data view.
Recommended zoom values are 0.5 - 5.0.
void
gwy_gl_view_class_disable_axis_drawing
(gboolean disable
);
Globally disables drawing of OpenGL view axes.
If axis drawing is disabled, axes are never drawn. If it is not disabled, their rendering depends on the OpenGL view setup.
This function is a hack and exists to work around various GL implementations that crash on pixmap drawing operations.
const gchar *
gwy_gl_view_get_mask_key (GwyGLView *glview
);
Gets the container key identifying the mask field for visualisation in an OpenGL view.
void gwy_gl_view_set_mask_key (GwyGLView *glview
,const gchar *key
);
Sets the container key identifying the mask field for visualisation in an OpenGL view.
GwyGLWindow -- window combining OpenGL view with controls, GwyGLMaterial -- OpenGL materials, GwyGLLabel -- Labels on OpenGL view, GwyGLSetup -- 3D scene setup