Pan Ip ippan

## godot_billboard.shader
// billboard
MODELVIEW_MATRIX = INV_CAMERA_MATRIX * mat4(CAMERA_MATRIX[0], CAMERA_MATRIX[1], CAMERA_MATRIX[2], WORLD_MATRIX[3]);

// scale
MODELVIEW_MATRIX = MODELVIEW_MATRIX * mat4(vec4(length(WORLD_MATRIX[0].xyz), 0, 0, 0), vec4(0, length(WORLD_MATRIX[1].xyz), 0, 0), vec4(0, 0, length(WORLD_MATRIX[2].xyz), 0), vec4(0, 0, 0, 1));

## git_osx_keychain.sh
git config --global credential.helper osxkeychain

## earth.shd
// author: PanPan
// random3 and simplex noise is come form
// https://thebookofshaders.com/edit.php#11/iching-03.frag

shader_type spatial;

vec3 random3(vec3 c)
{
    float j = 4096.0 * sin(dot(c,vec3(17.0, 59.4, 15.0)));
    vec3 r;

## .bashrc
if [ -t 1 ]; then
exec zsh
fi
	// billboard
	MODELVIEW_MATRIX = INV_CAMERA_MATRIX * mat4(CAMERA_MATRIX[0], CAMERA_MATRIX[1], CAMERA_MATRIX[2], WORLD_MATRIX[3]);

	// scale
	MODELVIEW_MATRIX = MODELVIEW_MATRIX * mat4(vec4(length(WORLD_MATRIX[0].xyz), 0, 0, 0), vec4(0, length(WORLD_MATRIX[1].xyz), 0, 0), vec4(0, 0, length(WORLD_MATRIX[2].xyz), 0), vec4(0, 0, 0, 1));
	// author: PanPan
	// random3 and simplex noise is come form
	// https://thebookofshaders.com/edit.php#11/iching-03.frag

	shader_type spatial;

	vec3 random3(vec3 c)
	{
	float j = 4096.0 * sin(dot(c,vec3(17.0, 59.4, 15.0)));
	vec3 r;