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Trees planted on Kappel's real skyline

Oct 13
3 min read

Export one line from Poly-Peaks, make it the ground in Buntwald, and plant a forest whose trees stand on the actual ridge.

Three stands of low-poly trees on a navy hill against a pale rose sky; the middle stand rises on the crest, the outer two on the slopes

Three stands on Kappel's skyline, Snap to skyline on: the free A5 PNG from Buntwald, 2,480 × 1,748 px.

Buntwald's own ground is a straight line, a tilted one or a random ridge. A real place is none of those. So the ground under this forest is the skyline of Kappel, at the south-eastern edge of Freiburg, drawn by Poly-Peaks and imported as a line, with the trees standing on it.

Below is how it got made: one line exported, one backdrop styled, one switch that puts trees on a ridge. No single link rebuilds the forest, because the skyline is a file you upload and each stand rolls its own places for its trees. This opens the skyline in Poly-Peaks and this opens Buntwald with the sky and colours; the stands are the part you plant.

How this one got made

The whole circle comes as one line

Open the Poly-Peaks link and press Generate Panorama; the app says it takes about a minute. The link has already set Simplification to 0.05. Low values keep the skyline detailed and high ones make it abstract, and a ridge that Buntwald will stretch across a whole canvas wants the detail. Tick the terms once, then press Horizon (SVG) under Downloads.

The file is the skyline and nothing else: one polyline of 139 points, once round the full circle, 4,000 units wide. It is the one public vector file Poly-Peaks offers, because it is the part of a panorama another app can build on.

The mountains replace Buntwald's ground

Open the Buntwald link. In Canvas & backdrop, drop the file on Mountain backdrop (.svg). A card appears for it, and the link has already set Backdrop mode to Replace horizon line, so the imported ridge stands where Buntwald's own line would.

The card opens at Scale 3.0 and Pan 0. Set Scale to 2.6 and Pan to 0.55 to bring the big hill to the middle of the canvas.

The Canvas and backdrop group: horizon.svg loaded, Replace horizon line chosen, a card with Scale 2.6, Pan 0.55 and Vertical offset 0.00, Backdrop style Silhouette and the Dark colour set to navy

The backdrop card after the upload. The file is 1.9 KB.

Fill the hill

Backdrop style decides how the line is drawn. As exported draws it as it came: a line with sky on both sides. Silhouette fills everything under the ridge with the Dark colour, set here to the navy #26547c.

Two renders of the same ridge on a rose sky: left, a dark grey line tracing the hill; right, the same ridge filled in navy

Same file, same Scale and Pan. Only Backdrop style changed.

Soft fills the same way and rounds the ridge off with a few spinning arrows. Posterise recolours filled shapes between Dark and Light; a Horizon (SVG) has no filled shapes, so there it looks exactly like As exported.

Snap the trees to the ridge

Plant the stands by clicking the canvas; each click plants the tree chosen under Species. Here that was spruce, beech and spruce, left to right, all Open-grown at 5 m, planted low on the canvas. In each stand's card, Tree count went to 3, Horizontal range to 0.12 and Base size to 0.5.

Left alone, the trees stand where they were clicked, in front of the hill. Switch on Snap to skyline in a stand's card and it follows the imported ridge instead of the flat horizon.

Two renders of the same three stands: left, the trees stand low on the flat in front of the navy hill; right, with Snap to skyline on, each stand has moved up onto the ridge

Only Snap to skyline changed, in all three cards. The middle stand now stands on the crest, its trunks ending on the line.

Behind ridge, next to it, draws a stand before the backdrop so the mountains hide part of it.

From screen to object

Under Downloads, tick the terms once and PNG (A5, 300 dpi) gives the scene as 2,480 × 1,748 px, signed in the corner. Order a print sits further down the list if you want it on paper.

Other controls, one line each

  • Vertical offset on the backdrop card raises or lowers the skyline against the horizon.

  • Backdrop mode set to Behind horizon line keeps Buntwald's own line in front of the imported mountains.

  • Tree count and Horizontal range turn a stand from one tree into a grove.

Your turn

Make your own skyline in Poly-Peaks, export Horizon (SVG), and open Buntwald to plant on it. If you like where it goes, send me what you made; I'll ask before I show it anywhere. Next, Kappel, scratched into its own skyline lays a scratched word over the same horizon.

 
 
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