reduce-keyframes #code_aeft

reduce-keyframes.jsx

// Loop through all keyframes of selected properties and delete duplicates that don't impact animation

if(!app.project.activeItem instanceof CompItem){
    alert('Please Select a Comp');
}
else if(!app.project.activeItem.selectedProperties[0]){
    alert('Please Select at least one Property with Keyframes');
}else{
    var comp = app.project.activeItem;
    var keyedProps = app.project.activeItem.selectedProperties;
    var removeList = [];

    function eq(p, a, b) {
        var propA = p.keyValue(a);
        var propB = p.keyValue(a);
        if(typeof propA === 'string' || typeof propA === 'number' || typeof propA === 'boolean'){
            return p.keyValue(a) === p.keyValue(b);
        }else{
            return JSON.stringify(p.keyValue(a)) === JSON.stringify(p.keyValue(b));
        }
    }

    for (var i = 0; i < keyedProps.length; i++) {
        var prop = keyedProps[i];
        var numKeys = prop.numKeys;
        prop.keyValue(numKeys)
        for (var j = numKeys; j > 0; j--) {
            var numKeys = prop.numKeys;
            var isLastKeyframe = j === prop.numKeys;
            var isFirstKeyframe = j === 1;

            var curKeyValue = prop.keyValue(j);
            if(numKeys === 1){
                prop.removeKey(j);
            }else if(isLastKeyframe){
                var previousKeyValue = prop.keyValue(j - 1);
                if(eq(prop, j, j - 1)){
                    prop.removeKey(j);
                }
            }else if(isFirstKeyframe){
                var nextKeyValue = prop.keyValue(j + 1);
                if(eq(prop, j, j + 1)){
                    prop.removeKey(j);
                }
            }else{
                var previousKeyValue = prop.keyValue(j - 1);
                var nextKeyValue = prop.keyValue(j + 1);
                if(eq(prop, j, j - 1)&&eq(prop, j, j + 1)){
                    prop.removeKey(j);
                }
            }
        }
    }
}