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Multi-anchor support

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This commit is contained in:
Bán Dénes 2020-09-06 17:15:46 +02:00
parent 390fd7fbc9
commit a3661e3752
1 changed files with 37 additions and 9 deletions
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46
src/assert.js
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@ -26,18 +26,22 @@ const detect_unexpected = exports.detect_unexpected = (obj, name, expected) => {
}
}
exports.in = (raw, name, arr) => {
const _in = exports.in = (raw, name, arr) => {
assert(arr.includes(raw), `Field "${name}" should be one of [${arr.join(', ')}]!`)
return raw
}
const numarr = exports.numarr = (raw, name, length) => {
assert(type(raw) == 'array' && raw.length == length, `Field "${name}" should be an array of length ${length}!`)
raw = raw.map(val => val || 0)
raw.map(val => assert(type(val) == 'number', `Field "${name}" should contain numbers!`))
const arr = exports.arr = (raw, name, length, _type, _default) => {
assert(type(raw) == 'array', `Field "${name}" should be an array!`)
assert(length == 0 || raw.length == length, `Field "${name}" should be an array of length ${length}!`)
raw = raw.map(val => val || _default)
raw.map(val => assert(type(val) == _type, `Field "${name}" should contain ${_type}s!`))
return raw
}
const numarr = exports.numarr = (raw, name, length) => arr(raw, name, length, 'number', 0)
const strarr = exports.strarr = (raw, name) => arr(raw, name, 0, 'string', '')
const xy = exports.xy = (raw, name) => numarr(raw, name, 2)
const wh = exports.wh = (raw, name) => {
@ -51,8 +55,16 @@ exports.trbl = (raw, name) => {
return numarr(raw, name, 4)
}
exports.anchor = (raw, name, points={}, check_unexpected=true, default_point=new Point()) => {
if (check_unexpected) detect_unexpected(raw, name, ['ref', 'shift', 'rotate'])
const anchor = exports.anchor = (raw, name, points={}, check_unexpected=true, default_point=new Point()) => {
if (type(raw) == 'array') {
// recursive call with incremental default_point mods, according to `affect`s
let current = default_point.clone()
for (const step of raw) {
current = anchor(step, name, points, check_unexpected, current)
}
return current
}
if (check_unexpected) detect_unexpected(raw, name, ['ref', 'orient', 'shift', 'rotate', 'affect'])
let point = default_point.clone()
if (raw.ref !== undefined) {
if (type(raw.ref) == 'array') {
@ -72,15 +84,31 @@ exports.anchor = (raw, name, points={}, check_unexpected=true, default_point=new
point = points[raw.ref].clone()
}
}
if (raw.orient !== undefined) {
point.r += sane(raw.orient || 0, `${name}.orient`, 'number')
}
if (raw.shift !== undefined) {
let xyval = wh(raw.shift || [0, 0], name + '.shift')
let xyval = wh(raw.shift || [0, 0], `${name}.shift`)
if (point.meta.mirrored) {
xyval[0] = -xyval[0]
}
point.shift(xyval, true)
}
if (raw.rotate !== undefined) {
point.r += sane(raw.rotate || 0, name + '.rotate', 'number')
point.r += sane(raw.rotate || 0, `${name}.rotate`, 'number')
}
if (raw.affect !== undefined) {
const candidate = point
point = default_point.clone()
const valid_affects = ['x', 'y', 'r']
let affect = raw.affect || valid_affects
if (type(affect) == 'string') affect = affect.split('')
affect = strarr(affect, `${name}.affect`)
let i = 0
for (const a of affect) {
_in(a, `${name}.affect[${++i}]`, valid_affects)
point[a] = candidate[a]
}
}
return point
}