forked from external-repos/squoosh
33 lines
1.0 KiB
TypeScript
33 lines
1.0 KiB
TypeScript
/**
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* Copyright 2020 Google Inc. All Rights Reserved.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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export function getContainOffsets(
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sw: number,
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sh: number,
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dw: number,
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dh: number,
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) {
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const currentAspect = sw / sh;
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const endAspect = dw / dh;
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if (endAspect > currentAspect) {
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const newSh = sw / endAspect;
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const newSy = (sh - newSh) / 2;
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return { sw, sh: newSh, sx: 0, sy: newSy };
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}
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const newSw = sh * endAspect;
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const newSx = (sw - newSw) / 2;
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return { sh, sw: newSw, sx: newSx, sy: 0 };
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}
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