Example am: Node editing along coordinate axes : Editing the heart mesh

Shows how to use EDIT_MASK and CONSTANT computed fields to create arrow vectors that allow you to edit along the underlying coordinate system directions even in the 3D window.

The comfile run by this example is as follows:

#Example_am: Node editing along coordinate axes : Editing the heart mesh
#
# This example shows that by using EDIT_MASK and CONSTANT computed fields
# it is possible to make glyphs that allow you to shift nodes along
# the coordinate axes directions, greatly increasing your control when 
# graphically positioning nodes in the 3D window.
#
# This procedure is easy to generalise to any other coordinate system.
#
#----------
#
# Read in the heart mesh from examples a3.
set dir example a3
gfx read nodes example heart.exnode
gfx read elements example heart.exelem
#
# Define a few materials for the edit arrows
#
gfx create material red ambient 1 0 0 diffuse 1 0 0 emission 0 0 0 specular 0.8 0.8 0.8 alpha 1 shininess 0.8
gfx create material green ambient 0 0.6 0 diffuse 0 0.6 0 emission 0 0 0 specular 0.8 0.8 0.8 alpha 1 shininess 0.8
gfx create material bluey ambient 0 0.2 0.4 diffuse 0 0.5 1 emission 0 0 0 specular 0.5 0.5 0.5 alpha 1 shininess 0.8
gfx create material gold ambient 1 0.7 0 diffuse 1 0.7 0 emission 0 0 0 specular 1 1 0.8 alpha 1 shininess 0.8
gfx create material purple ambient 1 0 1 diffuse 1 0 1 emission 0 0 0 specular 1 1 1 alpha 1 shininess 0.74
#
# Define the computed fields which pass the full coordinates along unchanged
# but only allow selective editing.  The edit_mask is a series of flags so 
# you can make glyphs that drag in two coordinates but not the third by 
# specifying edit_mask 1 1 0.  The coordinate system is inherited from the
# source field which is in prolate spheroidal.  To use rectangular cartesian
# edit vectors on the heart override this inheritance by specifying the
# coordinate system here.
#
gfx define field edit.lambda edit_mask field coordinates edit_mask 1 0 0
gfx define field edit.mu edit_mask field coordinates edit_mask 0 1 0
gfx define field edit.theta edit_mask field coordinates edit_mask 0 0 1
#
# We need constant vectors so that the edit arrows point in the correct
# direction. These fields have no source to inherit the coordinate system from
# so we set it explicitly.
#
gfx define field lambda_dirn coordinate_system prolate_spheroidal focus 35.25 constant number_of_values 3 values 1 0 0
gfx define field mu_dirn coordinate_system prolate_spheroidal focus 35.25 constant number_of_values 3 values 0 1 0
gfx define field theta_dirn coordinate_system prolate_spheroidal focus 35.25 constant number_of_values 3 values 0 0 1
#
# Put glyphs at every heart node that allow us to select them
#
gfx modify g_element heart general clear;
gfx modify g_element heart lines coordinate coordinates material default;
gfx modify g_element heart node_points coordinate coordinates glyph sphere size "1*1*1" centre 0,0,0 select_on material green selected_material purple
#
# Create the edit arrows at each node only when selected, and display the
# current coordinates at these nodes.
#
gfx modify g_element heart node_points coordinate edit.lambda glyph arrow_solid size "5*1*1" centre 0,0,0 orientation lambda_dirn scale_factors "0*0*0" draw_selected material red selected_material red

gfx modify g_element heart node_points coordinate edit.mu glyph arrow_solid size "5*1*1" centre 0,0,0 orientation mu_dirn scale_factors "0*0*0" draw_selected material bluey selected_material bluey

gfx modify g_element heart node_points coordinate edit.theta glyph arrow_solid size "5*1*1" centre 0,0,0 orientation theta_dirn scale_factors "0*0*0" draw_selected material gold selected_material gold

#
# Create the window
#
gfx create window 1
gfx modify window 1 view parallel eye_point -29.38 287.425 79.9833 interest_point 9.70453 6.38585 -5.00082 up_vector -0.99086 -0.118078 -0.0652206 view_angle 19.9678 near_clipping_plane 2.96197 far_clipping_plane 1058.51 relative_viewport ndc_placement -1 1 2 2 viewport_coordinates 0 0 1 1
#
# Set up the node tool for editing
#
# Select the node tool icon in the graphics window. Click again on its icon and
# choose 'edit' on the dialog that appears.  Alternatively, enable node editing
# with the following command:
gfx node_tool edit
#
# Edit away!
#
# Click on some of the green spheres and the edit vectors appear.
# Drag the edit_vectors to move the nodes.  Each coloured edit_vector moves you
# in only one of the underlying coordinate directions.
# You can select multiple nodes and move groups together, again maintaining
# consistency in the underlying coordinate system. 
#

Files used by this example are:

Name            Modified     Size

example_am.com  17-Mar-2014  4.3k
COPYRIGHT       17-Mar-2014  504 

Download the entire example:

Name                  Modified     Size

examples_a_am.tar.gz  09-Mar-2016   25k

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.

  
  

Html last generated: Wed Mar 9 16:01:24 2016

Input last modified: Wed Mar 9 15:49:43 2016