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differentiate freedraw config based on input type

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This commit is contained in:
dwelle
2025-06-27 14:07:12 +02:00
parent d9c85ff18f
commit 3c07ff358a
2 changed files with 28 additions and 9 deletions
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28
packages/element/src/freedraw.ts
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@@ -6,20 +6,38 @@ import getStroke from "perfect-freehand";
import type { StrokeOptions } from "perfect-freehand";
import type { ExcalidrawFreeDrawElement } from "./types";
import type { ExcalidrawFreeDrawElement, PointerType } from "./types";
export const DRAWING_CONFIGS = {
export const DRAWING_CONFIGS: Record<
PointerType | "default",
{ streamline: number; simplify: number }
> = {
default: {
streamline: 0.35,
simplify: 0.1,
},
// for optimal performance, we use a lower streamline and simplify
stylus: {
streamline: 0.35,
mouse: {
streamline: 0.6,
simplify: 0.1,
},
pen: {
// for optimal performance, we use a lower streamline and simplify
streamline: 0.2,
simplify: 0.1,
},
touch: {
streamline: 0.65,
simplify: 0.1,
},
} as const;
export const getFreedrawConfig = (eventType: string | null | undefined) => {
return (
DRAWING_CONFIGS[(eventType as PointerType | null) || "default"] ||
DRAWING_CONFIGS.default
);
};
/**
* Calculates simulated pressure based on velocity between consecutive points.
* Fast movement (large distances) -> lower pressure