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fix heat_base token covering whole viewport

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Boof2015
2026-04-18 02:51:10 -04:00
parent 17a67abdf3
commit c7142d447a
2 changed files with 38 additions and 6 deletions
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src/renderer/visualizers/SpectrumAnalyzer.ts
+6 -4
View File
@@ -1005,10 +1005,7 @@ export class SpectrumAnalyzer {
private renderHeatmap(xPoints: Float32Array, yPoints: Float32Array, heatmapIntensity: Float32Array, pointCount: number, width: number, height: number): void {
const baseColor = this.options.heatBaseColor
const parsedBaseColor = baseColor ? parseColorToRgba(baseColor) : null
if (baseColor && baseColor !== 'transparent' && (!parsedBaseColor || parsedBaseColor.a > 0)) {
this.ctx.fillStyle = baseColor
this.ctx.fillRect(0, 0, width, height)
}
const shouldRenderBaseColor = !!baseColor && baseColor !== 'transparent' && (!parsedBaseColor || parsedBaseColor.a > 0)
for (let index = 0; index < pointCount; index += 1) {
const x = Math.floor(xPoints[index])
@@ -1020,6 +1017,11 @@ export class SpectrumAnalyzer {
continue
}
if (shouldRenderBaseColor) {
this.ctx.fillStyle = baseColor
this.ctx.fillRect(x, Math.floor(y), columnWidth, Math.ceil(fillHeight))
}
const lutIndex = Math.round(heatmapIntensity[index] * 255)
const r = this.heatLut[lutIndex * 4]
const g = this.heatLut[lutIndex * 4 + 1]
test/renderer-helpers.test.ts
+32 -2
View File
@@ -776,7 +776,11 @@ function renderSpectrumSnapshot(options: Partial<SpectrumAnalyzerOptions>): {
}
}
function renderSpectrumHeatmap(options: Partial<SpectrumAnalyzerOptions>, heatmapIntensity: number[]): FakeCanvasRecorder {
function renderSpectrumHeatmap(
options: Partial<SpectrumAnalyzerOptions>,
heatmapIntensity: number[],
yPoints: number[] = heatmapIntensity.map(() => 0),
): FakeCanvasRecorder {
const recorder = createFakeCanvasRecorder()
const dom = installFakeCanvasDom()
const canvas = createFakeCanvas(recorder)
@@ -812,7 +816,7 @@ function renderSpectrumHeatmap(options: Partial<SpectrumAnalyzerOptions>, heatma
}
state.renderHeatmap(
Float32Array.from(heatmapIntensity.map((_value, index) => index)),
Float32Array.from(heatmapIntensity.map(() => 0)),
Float32Array.from(yPoints),
Float32Array.from(heatmapIntensity),
heatmapIntensity.length,
canvas.width,
@@ -1307,6 +1311,32 @@ test('SpectrumAnalyzer heatmap honors authored token alpha for low-end heat colo
assert.equal(renderedAlpha.some((value) => Math.abs(value - 1) < 1e-3), true)
})
test('SpectrumAnalyzer heat base only fills the visible heatmap area under the curve', () => {
const recorder = renderSpectrumHeatmap(
{
heatBaseColor: 'rgb(12, 34, 56)',
heatColors: [
'rgba(15, 7, 33, 0)',
'rgba(163, 26, 121, 0)',
'rgba(255, 241, 209, 0)',
],
},
[0, 0, 0],
[8, 12, 16],
)
const baseRects = recorder.fillRects.filter((rect) => rect.fillStyle === 'rgb(12, 34, 56)')
assert.equal(baseRects.length, 3)
assert.deepEqual(
baseRects.map((rect) => ({ x: rect.x, y: rect.y, width: rect.width, height: rect.height })),
[
{ x: 0, y: 8, width: 1, height: 16 },
{ x: 1, y: 12, width: 1, height: 12 },
{ x: 2, y: 16, width: 1, height: 8 },
],
)
})
test('Spectrogram heatmap preserves authored alpha in generated image data', () => {
const imageData = renderSpectrogramColumnImage({
heatColors: [