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WIP: (Edo) cycle option on Lattice tab
ref #678
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,108 @@ | ||
| <script setup lang="ts"> | ||
| import { useGridStore } from '@/stores/grid' | ||
| import { type MultiVertex } from 'ji-lattice' | ||
| import { type Interval } from 'sonic-weave' | ||
| import { computed, ref } from 'vue' | ||
| import { mmod } from 'xen-dev-utils' | ||
| const store = useGridStore() | ||
| const props = defineProps<{ | ||
| relativeIntervals: Interval[] | ||
| labels: string[] | ||
| colors: string[] | ||
| heldNotes: Set<number> | ||
| }>() | ||
| const svgElement = ref<SVGSVGElement | null>(null) | ||
| const steps = computed(() => { | ||
| const result: number[] = [] | ||
| for (const interval of props.relativeIntervals) { | ||
| result.push(interval.dot(store.val).valueOf()) | ||
| } | ||
| return result | ||
| }) | ||
| // Multi-label offsets | ||
| function lx(n: number, num: number) { | ||
| if (num < 3) { | ||
| return 0 | ||
| } | ||
| if (num & 1) { | ||
| // Odd counts exploit a different starting angle. | ||
| return store.labelOffset * store.size * Math.cos((2 * Math.PI * n) / num) | ||
| } | ||
| // Text tends to extend horizontally so we draw an ellipse. | ||
| return 1.5 * store.labelOffset * store.size * Math.sin((2 * Math.PI * n) / num) | ||
| } | ||
| function ly(n: number, num: number) { | ||
| if (num === 1) { | ||
| return -store.labelOffset * store.size | ||
| } | ||
| if (num & 1) { | ||
| // Odd counts exploit a different starting angle. | ||
| return store.labelOffset * store.size * Math.sin((2 * Math.PI * n) / num) | ||
| } | ||
| return -store.labelOffset * store.size * Math.cos((2 * Math.PI * n) / num) | ||
| } | ||
| const vertices = computed(() => { | ||
| const m = store.modulus; | ||
| const n = store.numEdoCycles; | ||
| const gpi = store.generatorPseudoInverse; | ||
| const result = new Map<number, MultiVertex>(); | ||
| const dt = 2 * Math.PI / m; | ||
| for (let i = 0; i < steps.value.length; ++i) { | ||
| const s = steps.value[i]; | ||
| const c = mmod(s, n) | ||
| const j = mmod((s - c) * gpi, m) + c | ||
| const vertex = result.get(j) ?? { | ||
| x: Math.sin(dt * j), | ||
| y: -Math.cos(dt * j), | ||
| indices: [] | ||
| } | ||
| vertex.indices.push(i) | ||
| result.set(j, vertex) | ||
| } | ||
| return Array.from(result.values()) | ||
| }) | ||
| </script> | ||
|
|
||
| <template> | ||
| <svg | ||
| ref="svgElement" | ||
| class="lattice" | ||
| xmlns="http://www.w3.org/2000/svg" | ||
| viewBox="-2 -2 4 4" | ||
| preserveAspectRatio="xMidYMid meet" | ||
| > | ||
| <circle | ||
| v-for="(v, i) of vertices" | ||
| :key="i" | ||
| :class="{ node: true, held: v.indices.some((idx) => heldNotes.has(idx)) }" | ||
| :cx="v.x" | ||
| :cy="v.y" | ||
| :r="0.5 * store.size" | ||
| :fill="colors[v.indices[0]] ?? 'none'" | ||
| :stroke="colors[v.indices[0]] ?? 'none'" | ||
| :stroke-width="store.size * 0.1" | ||
| /> | ||
| <template v-if="store.showLabels"> | ||
| <template v-for="(v, i) of vertices" :key="i"> | ||
| <text | ||
| v-for="(idx, j) of v.indices" | ||
| :key="idx" | ||
| class="node-label" | ||
| :x="v.x + lx(j, v.indices.length)" | ||
| :y="v.y + ly(j, v.indices.length)" | ||
| :font-size="`${1.1 * store.size}px`" | ||
| :stroke-width="store.size * 0.01" | ||
| dominant-baseline="middle" | ||
| > | ||
| {{ labels[idx] }} | ||
| </text> | ||
| </template> | ||
| </template> | ||
| </svg> | ||
| </template> |
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