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Howto:Dynamic Liveries via Canvas (view source)
Revision as of 18:41, 15 September 2014
, 18:41, 15 September 2014no edit summary
[[File:Canvas-livery-demo-using-ogle.png|thumb|A screen shot showing the ogel aircraft whose livery is dynamically changed using the [[Canvas]] system - in this case, we're simply rendering a [[MapStructure]] map onto the face of the pilot using ~10 lines of Nasal/Canvas code.]]
== Example ==
<syntaxhighlight lang="nasal">
# create a new window, dimensions are 320 x 160, using the dialog decoration (i.e. titlebar)
var window = canvas.Window.new([320,160],"dialog");
# adding a canvas to the new window and setting up background colors/transparency
var myCanvas = window.createCanvas();
# creating the top-level/root group which will contain all other elements/group
var root = myCanvas.createGroup();
# ogel
myCanvas.addPlacement({"node": "Head"});
var TestMap = root.createChild("map");
TestMap.setController("Aircraft position");
TestMap.setRange(25);
TestMap.setTranslation( myCanvas.get("view[0]")/2,
myCanvas.get("view[1]")/2
);
var r = func(name,vis=1,zindex=nil) return caller(0)[0];
foreach(var type; [r('APT'), r('VOR') ] )
TestMap.addLayer(factory: canvas.SymbolLayer, type_arg: type.name, visible: type.vis, priority: type.zindex,);
</syntaxhighlight>
== Objective ==
== Objective ==