armorpaint/paint/sources/material_nodes/checker_texture_node.ts

function checker_texture_node_init() {
	array_push(nodes_material_texture, checker_texture_node_def);
	map_set(parser_material_node_vectors, "TEX_CHECKER", checker_texture_node_vector);
	map_set(parser_material_node_values, "TEX_CHECKER", checker_texture_node_value);
}

let str_tex_checker: string = "\
fun tex_checker(co: float3, col1: float3, col2: float3, scale: float): float3 { \
	/* Prevent precision issues on unit coordinates */ \
	var p: float3 = (co + 0.000001 * 0.999999) * scale; \
	var xi: float = abs(floor(p.x)); \
	var yi: float = abs(floor(p.y)); \
	var zi: float = abs(floor(p.z)); \
	/* var check: bool = (xi % 2.0 == yi % 2.0) == zi % 2.0;*/ \
	var checka: int = 0; \
	var checkb: int = 0; \
	if (xi % 2.0 == yi % 2.0) { checka = 1; } \
	if (zi % 2.0 != 0.0) { checkb = 1; } \
	if (checka == checkb) { return col1; } return col2; \
} \
fun tex_checker_f(co: float3, scale: float): float { \
	var p: float3 = (co + 0.000001 * 0.999999) * scale; \
	var xi: float = abs(floor(p.x)); \
	var yi: float = abs(floor(p.y)); \
	var zi: float = abs(floor(p.z)); \
	/*return float((xi % 2.0 == yi % 2.0) == zi % 2.0);*/ \
	var checka: int = 0; \
	var checkb: int = 0; \
	if (xi % 2.0 == yi % 2.0) { checka = 1; } \
	if (zi % 2.0 != 0.0) { checkb = 1; } \
	if (checka == checkb) { return 1.0; } return 0.0; \
	\
} \
";

function checker_texture_node_vector(node: ui_node_t, socket: ui_node_socket_t): string {
	node_shader_add_function(parser_material_kong, str_tex_checker);
	let co: string    = parser_material_get_coord(node);
	let col1: string  = parser_material_parse_vector_input(node.inputs[1]);
	let col2: string  = parser_material_parse_vector_input(node.inputs[2]);
	let scale: string = parser_material_parse_value_input(node.inputs[3]);
	let res: string   = "tex_checker(" + co + ", " + col1 + ", " + col2 + ", " + scale + ")";
	return res;
}

function checker_texture_node_value(node: ui_node_t, socket: ui_node_socket_t): string {
	node_shader_add_function(parser_material_kong, str_tex_checker);
	let co: string    = parser_material_get_coord(node);
	let scale: string = parser_material_parse_value_input(node.inputs[3]);
	let res: string   = "tex_checker_f(" + co + ", " + scale + ")";
	return res;
}

let checker_texture_node_def: ui_node_t = {
	id : 0,
	name : _tr("Checker Texture"),
	type : "TEX_CHECKER",
	x : 0,
	y : 0,
	color : 0xff4982a0,
	inputs : [
		{
			id : 0,
			node_id : 0,
			name : _tr("Vector"),
			type : "VECTOR",
			color : 0xff6363c7,
			default_value : f32_array_create_xyz(0.0, 0.0, 0.0),
			min : 0.0,
			max : 1.0,
			precision : 100,
			display : 0
		},
		{
			id : 0,
			node_id : 0,
			name : _tr("Color 1"),
			type : "RGBA",
			color : 0xffc7c729,
			default_value : f32_array_create_xyz(0.8, 0.8, 0.8),
			min : 0.0,
			max : 1.0,
			precision : 100,
			display : 0
		},
		{
			id : 0,
			node_id : 0,
			name : _tr("Color 2"),
			type : "RGBA",
			color : 0xffc7c729,
			default_value : f32_array_create_xyz(0.2, 0.2, 0.2),
			min : 0.0,
			max : 1.0,
			precision : 100,
			display : 0
		},
		{
			id : 0,
			node_id : 0,
			name : _tr("Scale"),
			type : "VALUE",
			color : 0xffa1a1a1,
			default_value : f32_array_create_x(5.0),
			min : 0.0,
			max : 10.0,
			precision : 100,
			display : 0
		}
	],
	outputs : [
		{
			id : 0,
			node_id : 0,
			name : _tr("Color"),
			type : "RGBA",
			color : 0xffc7c729,
			default_value : f32_array_create_xyzw(0.8, 0.8, 0.8, 1.0),
			min : 0.0,
			max : 1.0,
			precision : 100,
			display : 0
		},
		{
			id : 0,
			node_id : 0,
			name : _tr("Fac"),
			type : "VALUE",
			color : 0xffa1a1a1,
			default_value : f32_array_create_x(1.0),
			min : 0.0,
			max : 1.0,
			precision : 100,
			display : 0
		}
	],
	buttons : [],
	width : 0,
	flags : 0
};