yes

frontend/static/js/3D/shaders.js

@@ -7,19 +7,44 @@ const vertex_shader_source = `
 	uniform mat4 uNormalMat;
 
 	varying highp vec3 vLighting;
+/*
+	vec3 lightColor = vec3(1.0, 0.8, 0.8);
+	vec3 lightDir = normalize(vec3(-0.2, -1.0, -0.3));
 
+	vec3 viewPos = vec3(0.0, 0.0, 0.0);
+
+	vec3 calculateLighting()
+	{
+		vec3 norm = normalize(aNormal);
+		// ambient
+		vec3 ambient = 0.3 * lightColor;
+		// diffuse
+		float diff = max(dot(lightDir, norm), 0.0);
+		vec3 diffuse = diff * lightColor;
+		// specular
+		vec3 viewDir = normalize(viewPos - vec3(aPos.xyz));
+		vec3 reflectDir = reflect(-lightDir, norm);
+		vec3 halfwayDir = normalize(lightDir + viewDir);  
+		float spec = pow(max(dot(norm, halfwayDir), 0.0), 32.0);
+		vec3 specular = vec3(0.3) * spec; // assuming bright white light color  
+
+		return (ambient + diffuse + specular);
+	}
+*/
 	void main()
 	{
 		gl_Position = uProj * uModView * aPos;
 
 		highp vec3 ambientLight = vec3(0.3, 0.3, 0.3);
 		highp vec3 directionalLightColor = vec3(1, 1, 1);
-		highp vec3 directionalVector = normalize(vec3(0.85, 0.8, 0.75));
+		highp vec3 directionalVector = normalize(vec3(1, 15, -1.75));
 
 		highp vec4 transformedNormal = uNormalMat * vec4(aNormal, 1.0);
 
 		highp float directional = max(dot(transformedNormal.xyz, directionalVector), 0.0);
 		vLighting = ambientLight + (directionalLightColor * directional);
+
+//		vLighting = calculateLighting();
 	}
 `;