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terrain50-cli
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Well, that was a failed experiment. 

We will probably come back to multithreading the renderer here, but for 
now we don't actually need it I don't think.
This commit is contained in:
Starbeamrainbowlabs 2020-05-07 15:37:09 +01:00
parent 8a846931d9
commit 01a97d04a1
Signed by: sbrl
GPG Key ID: 1BE5172E637709C2
2 changed files with 15 additions and 7 deletions
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2
package-lock.json generated
View File

@ -1,6 +1,6 @@
{
"name": "terrain50-cli",
"version": "1.0.1",
"version": "1.1.0",
"lockfileVersion": 1,
"requires": true,
"dependencies": {

20
src/Subcommands/image/Terrain50Renderer.mjs
View File

@ -6,7 +6,8 @@ import encode from 'image-encode';
import l from '../../Helpers/Log.mjs';
class Terrain50Renderer {
constructor(in_scale_factor) {
constructor(in_scale_factor, in_domain = "auto") {
this.colour_domain = in_domain;
this.scale_factor = in_scale_factor;
this.colour_scale = chroma.scale([
"#333333",
@ -26,15 +27,22 @@ class Terrain50Renderer {
* @return {ArrayBuffer} A canvas with the image rendered on it.
*/
async do_render(terrain) {
let min = terrain.min_value, max = terrain.max_value;
let colour_domain = this.colour_scale.domain([
min, max
]);
let colour_domain = null;
if(this.colour_domain === "auto") {
let min = terrain.min_value, max = terrain.max_value;
colour_domain = this.colour_scale.domain([
min, max
]);
l.log(`[Terrain50Renderer] Automatic colour domain: ${min} - ${max}`);
}
else {
colour_domain = this.colour_scale.domain(this.colour_domain);
l.log(`[Terrain50Renderer] Static colour domain: ${this.colour_domain[0]} - ${this.colour_domain[1]}`);
}
let width = Math.floor(terrain.meta.ncols / this.scale_factor),
height = Math.floor(terrain.meta.nrows / this.scale_factor);
l.log(`[Terrain50Renderer] Colour domain: ${min} - ${max}`);
l.log(`[Terrain50Renderer] Dimensions: ${width}x${height}`);
// Create the image