From f569c62313fb5c7175d7e68ba4895c6eea97de41 Mon Sep 17 00:00:00 2001
From: ChenX <maple6@vip.qq.com>
Date: Thu, 7 Mar 2019 16:52:39 +0800
Subject: [PATCH] =?UTF-8?q?=E5=AE=9E=E7=8E=B0=E7=AE=80=E5=8D=95=E9=98=B4?=
 =?UTF-8?q?=E6=9A=97=E9=9D=A2=E7=9D=80=E8=89=B2?=
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---
 src/GLSL/GoochShader.ts  | 14 ++++++++++----
 src/GLSL/GoodchSimple.fs |  8 ++++++++
 src/GLSL/GoodchSimple.vs |  9 +++++++++
 3 files changed, 27 insertions(+), 4 deletions(-)
 create mode 100644 src/GLSL/GoodchSimple.fs
 create mode 100644 src/GLSL/GoodchSimple.vs

diff --git a/src/GLSL/GoochShader.ts b/src/GLSL/GoochShader.ts
index add0cf5ab..7846c47d1 100644
--- a/src/GLSL/GoochShader.ts
+++ b/src/GLSL/GoochShader.ts
@@ -1,12 +1,10 @@
 import { Vector3 } from "three";
 
-//
-/* Written by Arefin Mohiuddin - graphics n00b */
-/* with help from Gooch Shader by Randi Rost (c) 3DLabs Inc. Ltd */
+//https://github.com/arefin86/arefin86.github.io/blob/master/js/shaders/GoochShader.js
 export const GoochShader = {
 	uniforms: {
 		"LightPosition": { type: "v3", value: new Vector3(-200, 0, 200) },
-		"SurfaceColor": { type: "v3", value: new Vector3(0.0, 0.0, 0.8) },
+		"SurfaceColor": { type: "v3", value: new Vector3(1.0, 1.0, 0.) },
 		"WarmColor": { type: "v3", value: new Vector3(1.0, 0.5, 0.0) },
 		"CoolColor": { type: "v3", value: new Vector3(0, 0, 0.7) },
 		"DiffuseWarm": { type: "f", value: 0.45 },
@@ -16,3 +14,11 @@ export const GoochShader = {
 	vertexShader: require("./Goodch2.vs"),
 	fragmentShader: require("./Goodch2.fs")
 }
+
+export const GoochShaderSimple = {
+	uniforms: {
+		"SurfaceColor": { type: "v3", value: new Vector3(1.0, 1.0, 1.0) }
+	},
+	vertexShader: require("./GoodchSimple.vs"),
+	fragmentShader: require("./GoodchSimple.fs")
+}
diff --git a/src/GLSL/GoodchSimple.fs b/src/GLSL/GoodchSimple.fs
new file mode 100644
index 000000000..47e327148
--- /dev/null
+++ b/src/GLSL/GoodchSimple.fs
@@ -0,0 +1,8 @@
+
+uniform vec3  SurfaceColor;
+varying float NdotL;
+
+void main(void) 
+{
+    gl_FragColor  = vec4 (SurfaceColor * NdotL, 1.0);
+}
diff --git a/src/GLSL/GoodchSimple.vs b/src/GLSL/GoodchSimple.vs
new file mode 100644
index 000000000..c78da304f
--- /dev/null
+++ b/src/GLSL/GoodchSimple.vs
@@ -0,0 +1,9 @@
+varying float NdotL;
+
+void main()
+{
+    vec3 trans_norm = normalize(normalMatrix * normal);
+    vec3 lightVec   = normalize(vec3(-1.0, 1.0, 1.0));
+    NdotL           = (dot (lightVec, trans_norm) + 1.0)  *0.5;
+    gl_Position     = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
+}