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rename map-{width,height} as viewport-{width,height}

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This commit is contained in:
Daniel Barlow 2025-06-07 12:29:28 +01:00
parent 2d2f592d73
commit ee286a0aef
1 changed files with 13 additions and 13 deletions
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26
pkgs/maps/main.fnl
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@ -33,8 +33,8 @@ label.readout {
(os.difftime (os.time localt) (os.time utct))))
(local map-width 720)
(local map-height 800)
(local viewport-width 720)
(local viewport-height 800)
(local tile-size 256)
(fn styles []
@ -49,8 +49,8 @@ label.readout {
(local window (Gtk.Window {
:title "Map"
:name "toplevel"
:default_width map-width
:default_height map-height
:default_width viewport-width
:default_height viewport-height
:on_destroy Gtk.main_quit
}))
@ -76,10 +76,10 @@ label.readout {
(fn map-bounds-tile [tile-x tile-y]
(let [min-tile-x (math.floor (- tile-x (/ map-width tile-size 2)))
max-tile-x (math.floor (+ tile-x (/ map-width tile-size 2)))
min-tile-y (math.floor (- tile-y (/ map-height tile-size 2)))
max-tile-y (math.floor (+ tile-y (/ map-height tile-size 2)))
(let [min-tile-x (math.floor (- tile-x (/ viewport-width tile-size 2)))
max-tile-x (math.floor (+ tile-x (/ viewport-width tile-size 2)))
min-tile-y (math.floor (- tile-y (/ viewport-height tile-size 2)))
max-tile-y (math.floor (+ tile-y (/ viewport-height tile-size 2)))
num-tiles-x (+ 1 (- max-tile-x min-tile-x))
num-tiles-y (+ 1 (- max-tile-y min-tile-y))]
@ -100,7 +100,7 @@ label.readout {
(let [bounds (map-bounds-tile 65539.5 45014.5)]
;; tile 65539, 45014 is centred on screen. left of it there is space
;; for one tile and right of it likewise.
;; vertical space for other tiles is (/ (- map-height tile-size) 256)
;; vertical space for other tiles is (/ (- viewport-height tile-size) 256)
;; => 2.125 tiles, shared equally to top and bottom therefore
;; 1.0625 tiles above and 1.0625 tiles below
@ -240,8 +240,8 @@ label.readout {
(fn on-osm-draw [widget g]
(let [(tile-x tile-y) (tiles.latlon->tile app-state.lat app-state.lon app-state.zoom)
bounds (map-bounds-tile tile-x tile-y)
offset-x (- (* tile-size (- tile-x bounds.min.x)) (/ map-width 2))
offset-y (- (* tile-size (- tile-y bounds.min.y)) (/ map-height 2))]
offset-x (- (* tile-size (- tile-x bounds.min.x)) (/ viewport-width 2))
offset-y (- (* tile-size (- tile-y bounds.min.y)) (/ viewport-height 2))]
(when (not map-surface)
(let [window (widget:get_window)]
@ -255,7 +255,7 @@ label.readout {
(g:set_source_surface map-surface (- offset-x) (- offset-y))
(g:set_operator cairo.Operator.SOURCE)
(g:rectangle 0 0 map-width map-height)
(g:rectangle 0 0 viewport-width viewport-height)
(g:fill)))
@ -268,7 +268,7 @@ label.readout {
(register-widget
:osm
(Gtk.DrawingArea {
:width map-width :height map-height
:width viewport-width :height viewport-height
:on_draw on-osm-draw
})))