102 lines
3.5 KiB
JavaScript
102 lines
3.5 KiB
JavaScript
import {
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createTypedArray,
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} from '../helpers/arrays';
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const ExpressionPropertyInterface = (function () {
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var defaultUnidimensionalValue = { pv: 0, v: 0, mult: 1 };
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var defaultMultidimensionalValue = { pv: [0, 0, 0], v: [0, 0, 0], mult: 1 };
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function completeProperty(expressionValue, property, type) {
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Object.defineProperty(expressionValue, 'velocity', {
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get: function () {
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return property.getVelocityAtTime(property.comp.currentFrame);
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},
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});
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expressionValue.numKeys = property.keyframes ? property.keyframes.length : 0;
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expressionValue.key = function (pos) {
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if (!expressionValue.numKeys) {
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return 0;
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}
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var value = '';
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if ('s' in property.keyframes[pos - 1]) {
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value = property.keyframes[pos - 1].s;
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} else if ('e' in property.keyframes[pos - 2]) {
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value = property.keyframes[pos - 2].e;
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} else {
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value = property.keyframes[pos - 2].s;
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}
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var valueProp = type === 'unidimensional' ? new Number(value) : Object.assign({}, value); // eslint-disable-line no-new-wrappers
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valueProp.time = property.keyframes[pos - 1].t / property.elem.comp.globalData.frameRate;
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valueProp.value = type === 'unidimensional' ? value[0] : value;
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return valueProp;
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};
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expressionValue.valueAtTime = property.getValueAtTime;
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expressionValue.speedAtTime = property.getSpeedAtTime;
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expressionValue.velocityAtTime = property.getVelocityAtTime;
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expressionValue.propertyGroup = property.propertyGroup;
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}
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function UnidimensionalPropertyInterface(property) {
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if (!property || !('pv' in property)) {
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property = defaultUnidimensionalValue;
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}
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var mult = 1 / property.mult;
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var val = property.pv * mult;
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var expressionValue = new Number(val); // eslint-disable-line no-new-wrappers
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expressionValue.value = val;
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completeProperty(expressionValue, property, 'unidimensional');
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return function () {
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if (property.k) {
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property.getValue();
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}
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val = property.v * mult;
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if (expressionValue.value !== val) {
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expressionValue = new Number(val); // eslint-disable-line no-new-wrappers
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expressionValue.value = val;
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completeProperty(expressionValue, property, 'unidimensional');
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}
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return expressionValue;
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};
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}
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function MultidimensionalPropertyInterface(property) {
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if (!property || !('pv' in property)) {
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property = defaultMultidimensionalValue;
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}
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var mult = 1 / property.mult;
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var len = (property.data && property.data.l) || property.pv.length;
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var expressionValue = createTypedArray('float32', len);
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var arrValue = createTypedArray('float32', len);
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expressionValue.value = arrValue;
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completeProperty(expressionValue, property, 'multidimensional');
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return function () {
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if (property.k) {
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property.getValue();
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}
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for (var i = 0; i < len; i += 1) {
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arrValue[i] = property.v[i] * mult;
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expressionValue[i] = arrValue[i];
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}
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return expressionValue;
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};
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}
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// TODO: try to avoid using this getter
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function defaultGetter() {
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return defaultUnidimensionalValue;
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}
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return function (property) {
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if (!property) {
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return defaultGetter;
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} if (property.propType === 'unidimensional') {
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return UnidimensionalPropertyInterface(property);
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}
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return MultidimensionalPropertyInterface(property);
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};
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}());
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export default ExpressionPropertyInterface;
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