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Use new props.addChildren method to speed up 'Select Aiport' dialog

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This commit is contained in:
Thomas Geymayer 2012-10-14 17:32:19 +02:00
parent 87426ba5c1
commit 7f1117a537
3 changed files with 54 additions and 34 deletions
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30
Nasal/canvas/api.nas
View file

@ -319,16 +319,25 @@ var Group = {
# type can be group, text
createChild: func(type, id = nil)
{
var factory = me._element_factories[type];
var factory = me._getFactory(type);
if( factory == nil )
{
debug.dump("canvas.Group.createChild(): unknown type (" ~ type ~ ")");
return nil;
}
return factory([me._node, type], id);
},
# Create multiple children of given type
createChildren: func(type, count)
{
var factory = me._getFactory(type);
if( factory == nil )
return [];
var nodes = me._node.addChildren(type, count, 0, 0);
for(var i = 0; i < count; i += 1)
nodes[i] = factory(nodes[i], nil); # TODO id. Maybe <base id>-<index>?
return nodes;
},
# Get a vector of all child elements
getChildren: func()
{
@ -386,6 +395,15 @@ var Group = {
{
# Create element from existing node
return me._element_factories[ node.getName() ](node, nil);
},
_getFactory: func(type)
{
var factory = me._element_factories[type];
if( factory == nil )
debug.dump("canvas.Group.createChild(): unknown type (" ~ type ~ ")");
return factory;
}
};

57
Nasal/canvas/map/taxiways.draw
View file

@ -1,40 +1,41 @@
var draw_taxiways = func(group, apt, lod) { # TODO: the LOD arg isn't stricly needed here,
# the layer is a conventional canvas group, so it can access its map
# parent and just read the "range" property to do LOD handling
group.set("z-index",-100); # HACK: we need to encapsulate this
group.set("z-index",-100) # HACK: we need to encapsulate this
.set("stroke", "none");
# var group = group.createChild("group", "apt-"~apt.id); #FIXME: we don't need to use two nested groups for each taxiway - performance?
# group = group.createChild("group", "taxiways");
# print("drawing taxiways for:", apt.id);
# Taxiways drawn first so the runways and parking positions end up on top.
foreach(var taxi; apt.taxiways)
{
var clr = SURFACECOLORS[taxi.surface];
if (clr == nil) { clr = SURFACECOLORS[0]};
var icon_taxi =
group.createChild("path", "taxi")
.setStrokeLineWidth(0)
.setColor(clr.r, clr.g, clr.b)
.setColorFill(clr.r, clr.g, clr.b);
# Preallocate all paths at once to gain some speed
var taxi_paths = group.createChildren("path", size(apt.taxiways));
var i = 0;
foreach(var taxi; apt.taxiways)
{
var clr = SURFACECOLORS[taxi.surface];
if (clr == nil) { clr = SURFACECOLORS[0]};
var txi = Runway.new(taxi);
var beg1 = txi.pointOffCenterline(0, 0.5 * taxi.width);
var beg2 = txi.pointOffCenterline(0, -0.5 * taxi.width);
var end1 = txi.pointOffCenterline(taxi.length, 0.5 * taxi.width);
var end2 = txi.pointOffCenterline(taxi.length, -0.5 * taxi.width);
var txi = Runway.new(taxi);
var beg1 = txi.pointOffCenterline(0, 0.5 * taxi.width);
var beg2 = txi.pointOffCenterline(0, -0.5 * taxi.width);
var end1 = txi.pointOffCenterline(taxi.length, 0.5 * taxi.width);
var end2 = txi.pointOffCenterline(taxi.length, -0.5 * taxi.width);
icon_taxi.setDataGeo
(
[ canvas.Path.VG_MOVE_TO,
canvas.Path.VG_LINE_TO,
canvas.Path.VG_LINE_TO,
canvas.Path.VG_LINE_TO,
canvas.Path.VG_CLOSE_PATH ],
[ beg1[0], beg1[1],
beg2[0], beg2[1],
end2[0], end2[1],
end1[0], end1[1] ]
);
}
taxi_paths[i].setColorFill(clr.r, clr.g, clr.b)
.setDataGeo
(
[ canvas.Path.VG_MOVE_TO,
canvas.Path.VG_LINE_TO,
canvas.Path.VG_LINE_TO,
canvas.Path.VG_LINE_TO,
canvas.Path.VG_CLOSE_PATH ],
[ beg1[0], beg1[1],
beg2[0], beg2[1],
end2[0], end2[1],
end1[0], end1[1] ]
);
i += 1;
}
}

1
Nasal/props.nas
View file

@ -15,6 +15,7 @@ var Node = {
getChild : func wrap(_getChild(me._g, arg)),
getChildren : func wrap(_getChildren(me._g, arg)),
addChild : func wrap(_addChild(me._g, arg)),
addChildren : func wrap(_addChildren(me._g, arg)),
removeChild : func wrap(_removeChild(me._g, arg)),
removeChildren : func wrap(_removeChildren(me._g, arg)),
getAliasTarget : func wrap(_getAliasTarget(me._g, arg)),