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ConstantTile with NoData: support idempotent CellType conversions #3553

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merged 11 commits into from
Oct 28, 2024

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@pomadchin pomadchin commented Oct 28, 2024

Overview

This PR fixes ConstantCellType conversions of the Byte and Short CellTypes as well as adds the ConstantTile.empty constructor.

Fixes #3525
Supersedes & closes #3552

cc @jdries

@pomadchin pomadchin changed the title ConstantTile with NoData: support idempotant cellType conversions ConstantTile with NoData: support idempotent cellType conversions Oct 28, 2024
Comment on lines 85 to 92
case BitCellType => new BitConstantTile(if (iVal == 0) false else true, cols, rows)
case ct: ByteCells => ByteConstantTile(iVal.toByte, cols, rows, ct)
case ct: ByteCells => ByteConstantTile(i2b(iVal), cols, rows, ct)
case ct: UByteCells => UByteConstantTile(iVal.toByte, cols, rows, ct)
case ct: ShortCells => ShortConstantTile(iVal.toShort , cols, rows, ct)
case ct: UShortCells => UShortConstantTile(iVal.toShort , cols, rows, ct)
case ct: IntCells => IntConstantTile(iVal , cols, rows, ct)
case ct: FloatCells => FloatConstantTile(dVal.toFloat , cols, rows, ct)
case ct: ShortCells => ShortConstantTile(i2s(iVal), cols, rows, ct)
case ct: UShortCells => UShortConstantTile(i2us(iVal) , cols, rows, ct)
case ct: IntCells => IntConstantTile(iVal, cols, rows, ct)
case ct: FloatCells => FloatConstantTile(d2f(dVal), cols, rows, ct)
case ct: DoubleCells => DoubleConstantTile(dVal, cols, rows, ct)
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@pomadchin pomadchin Oct 28, 2024

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That's the bug actually^ a tiny gotcha that caused this bug.
i.e. Int.MinValue.toByte / .toShort does not return us an expected NoDataValue:

Int.MinValue.toByte //> 0
Int.MinValue.toShort //> 0

@pomadchin pomadchin changed the title ConstantTile with NoData: support idempotent cellType conversions ConstantTile with NoData: support idempotent CellType conversions Oct 28, 2024
@pomadchin pomadchin force-pushed the fix/constant-tile-conversions branch from 977459b to d98a9ca Compare October 28, 2024 01:29
@pomadchin pomadchin merged commit 01a320a into locationtech:master Oct 28, 2024
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@pomadchin pomadchin deleted the fix/constant-tile-conversions branch October 28, 2024 02:13
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Convert NODATA ByteConstantTile and ShortConstantCellType: unexpected result
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