Simplify texture mapping code #315

Job	Run time
build-and-test (3.10, ubuntu-latest)	6m 28s
build-and-test (3.10, windows-latest)	4m 3s
build-and-test (3.10, macos-13)	3m 12s
build-and-test (3.10, macos-14)	2m 25s
build-and-test (3.11, ubuntu-latest)	6m 23s
build-and-test (3.11, windows-latest)	4m 5s
build-and-test (3.11, macos-13)	8m 43s
build-and-test (3.11, macos-14)	3m 32s
build-and-test (3.12, ubuntu-latest)	6m 22s
build-and-test (3.12, windows-latest)	4m 11s
build-and-test (3.12, macos-13)	5m 8s
build-and-test (3.12, macos-14)	2m 31s
	57m 3s

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