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Add @(require_results) to core:math/noise

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gingerBill
2023-05-22 12:00:17 +01:00
parent 2df6cabee0
commit 89a233ccd2
1 changed files with 9 additions and 0 deletions
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9
core/math/noise/opensimplex2.odin
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@@ -20,6 +20,7 @@ Vec4 :: [4]f64
/*
2D Simplex noise, standard lattice orientation.
*/
@(require_results)
noise_2d :: proc(seed: i64, coord: Vec2) -> (value: f32) {
// Get points for A2* lattice
skew := SKEW_2D * (coord.x + coord.y)
@@ -35,6 +36,7 @@ noise_2d :: proc(seed: i64, coord: Vec2) -> (value: f32) {
unless your map is centered around an equator. It's a subtle
difference, but the option is here to make it an easy choice.
*/
@(require_results)
noise_2d_improve_x :: proc(seed: i64, coord: Vec2) -> (value: f32) {
// Skew transform and rotation baked into one.
xx := coord.x * ROOT_2_OVER_2
@@ -51,6 +53,7 @@ noise_2d_improve_x :: proc(seed: i64, coord: Vec2) -> (value: f32) {
If Z is vertical in world coordinates, call `noise_3d_improve_xz(x, y, Z)`.
For a time varied animation, call `noise_3d_improve_xz(x, y, T)`.
*/
@(require_results)
noise_3d_improve_xy :: proc(seed: i64, coord: Vec3) -> (value: f32) {
/*
Re-orient the cubic lattices without skewing, so Z points up the main lattice diagonal,
@@ -75,6 +78,7 @@ noise_3d_improve_xy :: proc(seed: i64, coord: Vec3) -> (value: f32) {
If Z is vertical in world coordinates, call `noise_3d_improve_xz(x, Z, y)` or use `noise_3d_improve_xy`.
For a time varied animation, call `noise_3d_improve_xz(x, T, y)` or use `noise_3d_improve_xy`.
*/
@(require_results)
noise_3d_improve_xz :: proc(seed: i64, coord: Vec3) -> (value: f32) {
/*
Re-orient the cubic lattices without skewing, so Y points up the main lattice diagonal,
@@ -96,6 +100,7 @@ noise_3d_improve_xz :: proc(seed: i64, coord: Vec3) -> (value: f32) {
Use `noise_3d_improve_xy` or `noise_3d_improve_xz` instead, wherever appropriate.
They have less diagonal bias. This function's best use is as a fallback.
*/
@(require_results)
noise_3d_fallback :: proc(seed: i64, coord: Vec3) -> (value: f32) {
/*
Re-orient the cubic lattices via rotation, to produce a familiar look.
@@ -114,6 +119,7 @@ noise_3d_fallback :: proc(seed: i64, coord: Vec3) -> (value: f32) {
Recommended for time-varied animations which texture a 3D object (W=time)
in a space where Z is vertical.
*/
@(require_results)
noise_4d_improve_xyz_improve_xy :: proc(seed: i64, coord: Vec4) -> (value: f32) {
xy := coord.x + coord.y
s2 := xy * -0.21132486540518699998
@@ -133,6 +139,7 @@ noise_4d_improve_xyz_improve_xy :: proc(seed: i64, coord: Vec4) -> (value: f32)
Recommended for time-varied animations which texture a 3D object (W=time)
in a space where Y is vertical.
*/
@(require_results)
noise_4d_improve_xyz_improve_xz :: proc(seed: i64, coord: Vec4) -> (value: f32) {
xz := coord.x + coord.z
s2 := xz * -0.21132486540518699998
@@ -152,6 +159,7 @@ noise_4d_improve_xyz_improve_xz :: proc(seed: i64, coord: Vec4) -> (value: f32)
Recommended for time-varied animations which texture a 3D object (W=time)
where there isn't a clear distinction between horizontal and vertical
*/
@(require_results)
noise_4d_improve_xyz :: proc(seed: i64, coord: Vec4) -> (value: f32) {
xyz := coord.x + coord.y + coord.z
ww := coord.w * 0.2236067977499788
@@ -164,6 +172,7 @@ noise_4d_improve_xyz :: proc(seed: i64, coord: Vec4) -> (value: f32) {
/*
4D OpenSimplex2 noise, fallback lattice orientation.
*/
@(require_results)
noise_4d_fallback :: proc(seed: i64, coord: Vec4) -> (value: f32) {
// Get points for A4 lattice
skew := f64(SKEW_4D) * (coord.x + coord.y + coord.z + coord.w)