Example a/field_dependent_visibility: Field dependent visibility: Using field to determine the visibility of each node.

Using a boolean field to determine the visibility of each node/data point. This boolean field can be created at run time as shown below. This example requires cmgui 2.6.1 or greater.

Created May, 2009 by Alan Wu.

The comfile run by this example is as follows:

# ***** BEGIN LICENSE BLOCK *****
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# The Original Code is CMISS Field Dependent Visibility example.
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#A short example to demostrate how to control the visiblity of node/data points 
#using field in cmgui.

#Read in the coordinate and the field containing information of
#the period of time which each node is visible at.
gfx read nodes $example/cube;
gfx read elements $example/cube;
gfx read nodes $example/line;

# create initial visualisation
gfx modify g_element "/" general clear;
gfx modify g_element cube lines coordinate coordinates material default;

#First define a field which contains the value of current time in 
#time keeper
gfx define field time_value time_value;
#Compare the current time value with the life time period specified in
#the visible_time field. The resultant visibility field will be 1 if 
#the current time is within the visible_time.
gfx define field greater greater_than field visible_time.end time_value;
gfx define field less less_than field visible_time.start time_value;
gfx define field equal equal_to field visible_time.start time_value;
gfx define field less_or_equal or field less equal;
gfx define field visibility and field less_or_equal greater;

#create a spectrum
gfx modify spectrum default clear overwrite_colour;
gfx modify spectrum default linear reverse range 1 8 extend_above extend_below rainbow colour_range 0 1 component 1;

#Create a set of node points for cube which visibility is controlled by the subgroup field (note command token changed from 'visibility' to 'subgroup').
gfx modify g_element "/" node_points glyph sphere general size "0.1*0.1*0.1" centre 0,0,0 font default subgroup visibility data cmiss_number select_on material default selected_material default_selected;
# Old command for cmgui 2.8:
#gfx modify g_element cube node_points glyph sphere general size "0.1*0.1*0.1" centre 0,0,0 font default visibility visibility data cmiss_number select_on material default selected_material default_selected;


#create a field which is used as the iso-scalar of an iso-surface
gfx define field coord.y composite coordinates.y;
gfx define field nine constant 9;
gfx define field mul multiply field coord.y nine;
gfx define field div divide field mul time_value;

gfx modify g_element cube iso_surfaces iso_scalar div iso_values 1 use_elements select_on material default data mul spectrum default selected_material default_selected render_shaded;

#create a visibility field which controls the visibility of node points in line group.
gfx define field line_multiply multiply field coordinates.y nine;
gfx define field line_visibility greater_than field time_value line_multiply;

#Create a set of node points for line which visibility is controlled by the line_visibility field.
gfx define field final_line_visibility and fields line.nodes line_visibility;
gfx modify g_element line node_points glyph sheet general size "0.1*0.1*0.1" centre 0,0,0 font default subgroup final_line_visibility select_on material default data line_multiply spectrum default selected_material default_selected;
# Old command for cmgui 2.8:
#gfx modify g_element line node_points glyph sheet general size "0.1*0.1*0.1" centre 0,0,0 font default visibility line_visibility select_on material default data line_multiply spectrum default selected_material default_selected;

gfx cre win 1;
gfx modify window 1 view parallel eye_point 3.3986 -1.29312 1.43081 interest_point 0.5 0.5 0.5 up_vector -0.223722 0.139112 0.964674 view_angle 40 near_clipping_plane 0.0353321 far_clipping_plane 12.6265 relative_viewport ndc_placement -1 1 2 2 viewport_coordinates 0 0 1 1;
gfx timekeeper default maximum 9;
if ($TESTING)
{
	gfx timekeeper default set_time 5;
	gfx export vrml file field_dependent_visibility.wrl scene default;
} else {
	gfx timekeeper default play;
}

Files used by this example are:

Name                                    Modified     Size

example_field_dependent_visibility.com  17-Mar-2014  5.3k
COPYRIGHT                               17-Mar-2014  504 
cube.exelem                             17-Mar-2014  4.9k
cube.exnode                             17-Mar-2014  592 
line.exnode                             17-Mar-2014  451 

Download the entire example:

Name                                          Modified     Size

examples_a_field_dependent_visibility.tar.gz  09-Mar-2016   16k

Testing status by version:

Testing status by file:

• status
  

  x86_64-linux
  139	cmgui-wx:	error exit status 139.
  139	cmgui-wx-debug:	error exit status 139.
  139	cmgui-wx-debug-memorycheck:	error exit status 139.
  139	cmgui-wx-debug-valgrind:	error exit status 139.

  
  
• cmiss_test.log
  

  i686-linux
  Failure	cmgui-wx:	diff test: differences with generic answer; Test output.
  Failure	cmgui-wx-debug:	diff test: differences with generic answer; Test output.
  Failure	cmgui-wx-debug-memorycheck:	diff test: differences with generic answer; Test output.
  Failure	cmgui-wx-debug-valgrind:	diff test: differences with generic answer; Test output.
  x86_64-linux
  Failure	cmgui-wx:	diff test: differences with generic answer; Test output.
  Failure	cmgui-wx-debug:	diff test: differences with generic answer; Test output.
  Failure	cmgui-wx-debug-memorycheck:	diff test: differences with generic answer; Test output.
  Failure	cmgui-wx-debug-valgrind:	diff test: differences with generic answer; Test output.

  
  
• field_dependent_visibility.wrl
  

  i686-linux
  Failure	cmgui-wx:	ndiff test: significant differences with generic answer.
  Failure	cmgui-wx-debug:	ndiff test: significant differences with generic answer.
  Failure	cmgui-wx-debug-memorycheck:	ndiff test: significant differences with generic answer.
  Failure	cmgui-wx-debug-valgrind:	ndiff test: significant differences with generic answer.
  x86_64-linux
  Missing	cmgui-wx:	output file not generated for ndiff; generic answer.
  Missing	cmgui-wx-debug:	output file not generated for ndiff; generic answer.
  Missing	cmgui-wx-debug-memorycheck:	output file not generated for ndiff; generic answer.
  Missing	cmgui-wx-debug-valgrind:	output file not generated for ndiff; generic answer.

  
  

Html last generated: Wed Mar 9 16:02:06 2016

Input last modified: Wed Mar 9 15:49:41 2016