# PSYS_SRC_PATTERN_ANGLE

*LSL constant*

```lsl
integer PSYS_SRC_PATTERN_ANGLE = 0x04;
```

Emission pattern that sprays particles outward in a flat circular, semi-circular, arc, or ray-shaped 2D area (around the prim's local X-axis) as defined by the start/end and inner/outer angle parameters.

Constant groups: [ParticleSourcePattern](/constants/groups/ParticleSourcePattern/)

:::note[Documentation]
This entry is documented in the LSL definitions. No matching wiki article is present in this local collection. Its inclusion here does not establish availability on every simulator.
:::

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From lsl.dev: https://lsl.dev/constants/PSYS_SRC_PATTERN_ANGLE/