extern/mapscii
1
0
Fork 0
mirror of https://github.com/rastapasta/mapscii.git synced 2025-03-20 00:46:38 +01:00
Code Issues Packages Projects Releases Wiki Activity

🚤 reducing points after scaling to speed up rendering

Browse Source
This commit is contained in:
Michael Straßburger 2016-09-28 18:06:24 +02:00
parent f5fdd8dea5
commit 05558f0cdf
1 changed files with 19 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
src/Renderer.coffee
View File

@ -19,7 +19,7 @@ module.exports = class Renderer
labelMargin: 5 labelMargin: 5
#"poi_label", "water", #"poi_label", "water",
drawOrder: ["water", "admin", "building", "road", "place_label", "poi_label", "housenum_label"] drawOrder: ["admin", "building", "road", "place_label", "poi_label", "housenum_label"]
icons: icons:
car: "🚗" car: "🚗"
@ -122,8 +122,7 @@ module.exports = class Renderer
unless style = @styler.getStyleFor layer, feature, 14 unless style = @styler.getStyleFor layer, feature, 14
return false return false
toDraw = for points in feature.points toDraw = (@_scaleAndReduce points, scale for points in feature.points)
[point.x/scale, point.y/scale] for point in points
color = style.paint['line-color'] or style.paint['fill-color'] or style.paint['text-color'] color = style.paint['line-color'] or style.paint['fill-color'] or style.paint['text-color']
@ -159,5 +158,22 @@ module.exports = class Renderer
if @labelBuffer.writeIfPossible text, x, point[1], (@config.layers[layer]?.margin or @config.labelMargin) if @labelBuffer.writeIfPossible text, x, point[1], (@config.layers[layer]?.margin or @config.labelMargin)
@canvas.text text, x, point[1], colorCode, false @canvas.text text, x, point[1], colorCode, false
_scaleAndReduce: (points, scale) ->
lastX = null
lastY = null
scaled = []
for point in points
x = Math.floor point.x/scale
y = Math.floor point.y/scale
if lastX isnt x or lastY isnt y
lastY = y
lastX = x
scaled.push [x, y]
scaled
notify: (text) -> notify: (text) ->
@_write "\r\x1B[K"+text @_write "\r\x1B[K"+text