react-native#TransformsStyle TypeScript Examples

The following examples show how to use react-native#TransformsStyle. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: index.ts    From react-native-anchor-point with MIT License 5 votes vote down vote up 
withAnchorPoint = (transform: TransformsStyle, anchorPoint: Point, size: Size) => {
    if(!isValidSize(size)) {
        return transform;
    }

    let injectedTransform = transform.transform;
    if (!injectedTransform) {
        return transform;
    }

    if (anchorPoint.x !== defaultAnchorPoint.x && size.width) {
        const shiftTranslateX = [];

        // shift before rotation
        shiftTranslateX.push({
            translateX: size.width * (anchorPoint.x - defaultAnchorPoint.x),
        });
        injectedTransform = [...shiftTranslateX, ...injectedTransform];
        // shift after rotation
        injectedTransform.push({
            translateX: size.width * (defaultAnchorPoint.x - anchorPoint.x),
        });
    }

    if (!Array.isArray(injectedTransform)) {
        return { transform: injectedTransform };
    }

    if (anchorPoint.y !== defaultAnchorPoint.y && size.height) {
        let shiftTranslateY = [];
        // shift before rotation
        shiftTranslateY.push({
            translateY: size.height * (anchorPoint.y - defaultAnchorPoint.y),
        });
        injectedTransform = [...shiftTranslateY, ...injectedTransform];
        // shift after rotation
        injectedTransform.push({
            translateY: size.height * (defaultAnchorPoint.y - anchorPoint.y),
        });
    }

    return { transform: injectedTransform };
}