// Copyright 2018 Google Inc.
precision mediump float;
attribute vec4 a_position;
attribute vec3 a_normal;
attribute vec4 a_color;
attribute vec3 a_texcoord0;
varying vec4 v_color;
varying vec3 v_normal;
varying vec3 v_position;
varying vec2 v_texcoord0;
varying vec3 v_light_dir_0;
varying vec3 v_light_dir_1;
varying float f_fog_coord;
uniform mat4 modelMatrix;
uniform mat4 viewMatrix;
uniform mat4 modelViewMatrix;
uniform mat4 projectionMatrix;
uniform mat3 normalMatrix;
uniform mat4 u_SceneLight_0_matrix;
uniform mat4 u_SceneLight_1_matrix;
void main() {
float t;
float envelope = sin ( mod ( a_texcoord0.x * 2., 1.) * 3.14159);
float lights = envelope < .15 ? 1. : 0.;
float radius = a_texcoord0.z * 0.9;
vec4 newPosition = a_position;
newPosition.xyz += a_normal * lights * radius;
gl_Position = projectionMatrix * modelViewMatrix * newPosition;
f_fog_coord = gl_Position.z;
v_position = a_position.xyz;
v_normal = normalMatrix * a_normal;
v_light_dir_0 = mat3(u_SceneLight_0_matrix) * vec3(0, 0, 1);
v_light_dir_1 = mat3(u_SceneLight_1_matrix) * vec3(0, 0, 1);
v_color = a_color;
v_texcoord0 = a_texcoord0.xy;
}