| 69 | }; |
| 70 | |
| 71 | const computeDataBounds = ( |
| 72 | data: ReadonlyArray<DataPoint> |
| 73 | ): { readonly xMin: number; readonly xMax: number; readonly yMin: number; readonly yMax: number } => { |
| 74 | let xMin = Number.POSITIVE_INFINITY; |
| 75 | let xMax = Number.NEGATIVE_INFINITY; |
| 76 | let yMin = Number.POSITIVE_INFINITY; |
| 77 | let yMax = Number.NEGATIVE_INFINITY; |
| 78 | |
| 79 | for (let i = 0; i < data.length; i++) { |
| 80 | const { x, y } = getPointXY(data[i]); |
| 81 | if (!Number.isFinite(x) || !Number.isFinite(y)) continue; |
| 82 | if (x < xMin) xMin = x; |
| 83 | if (x > xMax) xMax = x; |
| 84 | if (y < yMin) yMin = y; |
| 85 | if (y > yMax) yMax = y; |
| 86 | } |
| 87 | |
| 88 | if (!Number.isFinite(xMin) || !Number.isFinite(xMax) || !Number.isFinite(yMin) || !Number.isFinite(yMax)) { |
| 89 | return { xMin: 0, xMax: 1, yMin: 0, yMax: 1 }; |
| 90 | } |
| 91 | |
| 92 | // Avoid degenerate domains for affine derivation (handled later too, but keep stable samples). |
| 93 | if (xMin === xMax) xMax = xMin + 1; |
| 94 | if (yMin === yMax) yMax = yMin + 1; |
| 95 | |
| 96 | return { xMin, xMax, yMin, yMax }; |
| 97 | }; |
| 98 | |
| 99 | const computeClipAffineFromScale = ( |
| 100 | scale: LinearScale, |