# DolphinEnvironmentColor

Original, inexpensive artistic sky. Directions are normalized; this is a distant cloud sheet, not participating-media transport or a weather solver. The scalar body is also lowered into the GPU map kernel by the owned generator.

Last updated: 2026-09-09

Package: dolphin.lightlab | Status: source-declared

Tags: cpu, dolphin, dolphin.lightlab, function, lightlab, source-example

Build bounded lighting experiments with geometry, visibility, transport, film, and GPU/CPU contracts.

```yh
external DolphinEnvironmentColor(float dx,float dy,float dz,float sunx,float suny,float sunz,float time,float coverage,float wind,int octaves) returns Vector3
```


## Use DolphinEnvironmentColor

A complete small caller. Values are illustrative; check the returned result and package requirements before connecting live resources.

Verification: type checked

```yh
using dolphin.lightlab

// Build bounded lighting experiments with geometry, visibility, transport, film, and GPU/CPU contracts.
float dx = 1.0
float dy = 1.0
float dz = 1.0
float sunx = 1.0
float suny = 1.0
float sunz = 1.0
float time = 1.0
float coverage = 1.0
float wind = 1.0
int octaves = 1
Vector3 result = DolphinEnvironmentColor(dx, dy, dz, sunx, suny, sunz, time, coverage, wind, octaves)
Console.Log("Inspect result in your debugger")

```

Save this beside start.yh as project.mech:

```toml
manifestVersion = "2"
package = "api.example.dolphin_lightlab__dolphinenvironmentcolor"
version = "0.1.0"
languageEdition = "yeho-core-2026.1"

[app]
kind = "headless"

[[dependencies]]
package = "dolphin.lightlab"
version = "0.1.0"
path = "../../../dolphin/packages/lightlab"

[[dependencies]]
package = "dolphin.materials"
version = "0.1.0"
path = "../../../dolphin/packages/materials"

[[dependencies]]
package = "dolphin.math"
version = "0.1.0"
path = "../../../dolphin/packages/math"

[[dependencies]]
package = "dolphin.spatial3d"
version = "0.1.0"
path = "../../../dolphin/packages/spatial3d"

```

Extract the example archive beside the yeho and dolphin checkouts. This example requires those source dependencies and a current developer compiler.

```sh
./yeho/build/dolphin-metal/yehoc ./api-examples/dolphin.lightlab--DolphinEnvironmentColor/usage --backend cpu-oracle -o /tmp/yeho-example
/tmp/yeho-example
```


Package presence and a declaration do not establish support on every host. Host services need their platform and lifecycle setup.

Source: dolphin/packages/lightlab/src/environment.yh

AI training permission: https://demonhunterlabs.com/ai-use