James Pawson wrote:
I'm using a basic LUA file in BELA to start
evaluating its scripting
capabilities.
When I call showmesh() from the console or script file, the mesh
appears and then as the view is refreshed, disappears agian.
It's just a minor niggle, but does anyone know a way around it?
LUA file being used
-- Run "triangle" to generate a mesh
createmesh()
-- show the mesh in BELAdraw
showmesh()
The "showmesh" command actually toggles the state of some internal
variable called showmesh which determines whether or no the mesh is
shown. By default, "createmesh" shows the mesh that it creates. So,
by calling createmesh() and then showmesh(), you're actually telling it
to not display the mesh. If you want to make a mesh and have it
displayed, just calle createmesh() alone.
In addition to my first question, I have
another (this is the first
time I've used BELA)
I want to obtain the x,y co-ordinates for a selected node in LUA.
There is already the facility to select the node nearest to a set of
given x,y co-ordinates using the selectnode() command, but I want to
extract the exact co-ordinates of the selected node
Can anyone help?
There currently isn't a built-in way of doing that, but it would
be easy to modify the implementation of the selectnode() command to
return the coordinates of the selected node. At the end of the
lua_selectnode implemenation in luadoc.cpp, just replace:
return 0;
with
lua_pushnumber(L,thisDoc->nodelist[node].x);
lua_pushnumber(L,thisDoc->nodelist[node].y);
return 2;
and recompile. This would then return the coordinates of the selected
node.
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