From 01a97d04a14f2e4225d60ddd2ae7295c51c76ed0 Mon Sep 17 00:00:00 2001
From: Starbeamrainbowlabs <sbrl@starbeamrainbowlabs.com>
Date: Thu, 7 May 2020 15:37:09 +0100
Subject: [PATCH] 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.
---
 package-lock.json                           |  2 +-
 src/Subcommands/image/Terrain50Renderer.mjs | 20 ++++++++++++++------
 2 files changed, 15 insertions(+), 7 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index 057a87c..1c4ca22 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
 	"name": "terrain50-cli",
-	"version": "1.0.1",
+	"version": "1.1.0",
 	"lockfileVersion": 1,
 	"requires": true,
 	"dependencies": {
diff --git a/src/Subcommands/image/Terrain50Renderer.mjs b/src/Subcommands/image/Terrain50Renderer.mjs
index 5503225..4798bb1 100644
--- a/src/Subcommands/image/Terrain50Renderer.mjs
+++ b/src/Subcommands/image/Terrain50Renderer.mjs
@@ -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