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fix(clipboard): convert quadratic beziers to cubic instead of flattening to lines

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This commit is contained in:
Danila Poyarkov 2026-05-16 18:43:24 +03:00
parent ea323c33f0
commit 8d21d05f25
1 changed files with 30 additions and 9 deletions
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39
packages/core/src/kiwi/node-change/path-commands.ts
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@ -12,33 +12,54 @@ export function encodePathCommandsBlob(commands: OutlineCommand[], scale = 1): U
new DataView(buf).setFloat32(0, (value ?? 0) / scale, true)
bytes.push(...new Uint8Array(buf))
}
const negY = (v: number | undefined) => (v === undefined ? undefined : -v)
let curX = 0
let curY = 0
for (const command of commands) {
switch (command.type) {
case 'M':
bytes.push(CMD_MOVE_TO)
pushFloat(command.x)
pushFloat(command.y === undefined ? undefined : -command.y)
pushFloat(negY(command.y))
curX = command.x ?? 0
curY = command.y ?? 0
break
case 'L':
bytes.push(CMD_LINE_TO)
pushFloat(command.x)
pushFloat(command.y === undefined ? undefined : -command.y)
pushFloat(negY(command.y))
curX = command.x ?? 0
curY = command.y ?? 0
break
case 'C':
bytes.push(CMD_CUBIC_TO)
pushFloat(command.x1)
pushFloat(command.y1 === undefined ? undefined : -command.y1)
pushFloat(negY(command.y1))
pushFloat(command.x2)
pushFloat(command.y2 === undefined ? undefined : -command.y2)
pushFloat(negY(command.y2))
pushFloat(command.x)
pushFloat(command.y === undefined ? undefined : -command.y)
pushFloat(negY(command.y))
curX = command.x ?? 0
curY = command.y ?? 0
break
case 'Q':
bytes.push(CMD_LINE_TO)
pushFloat(command.x)
pushFloat(command.y === undefined ? undefined : -command.y)
case 'Q': {
const qx1 = command.x1 ?? 0
const qy1 = command.y1 ?? 0
const qx = command.x ?? 0
const qy = command.y ?? 0
bytes.push(CMD_CUBIC_TO)
pushFloat(curX + (2 / 3) * (qx1 - curX))
pushFloat(negY(curY + (2 / 3) * (qy1 - curY)))
pushFloat(qx + (2 / 3) * (qx1 - qx))
pushFloat(negY(qy + (2 / 3) * (qy1 - qy)))
pushFloat(qx)
pushFloat(negY(qy))
curX = qx
curY = qy
break
}
case 'Z':
bytes.push(CMD_CLOSE)
break