@visactor/vrender-animate/cjs/custom/transient.js

This module provides a graph-based animation system for VRender.

"use strict";

Object.defineProperty(exports, "__esModule", {
    value: !0
}), exports.applyAppearStartAttributes = exports.applyAnimationTransientAttributes = exports.applyAnimationFrameNumberAttributes = exports.applyAnimationFrameAttributes = void 0;

const constant_1 = require("@visactor/vrender-core/event/constant"), animateUpdateContext = {
    type: constant_1.AttributeUpdateType.ANIMATE_UPDATE
}, animateBindContext = {
    type: constant_1.AttributeUpdateType.ANIMATE_BIND
}, animateStartContext = {
    type: constant_1.AttributeUpdateType.ANIMATE_START
};

function getAnimationContext(type) {
    switch (type) {
      case constant_1.AttributeUpdateType.ANIMATE_UPDATE:
        return animateUpdateContext;

      case constant_1.AttributeUpdateType.ANIMATE_BIND:
        return animateBindContext;

      case constant_1.AttributeUpdateType.ANIMATE_START:
        return animateStartContext;

      default:
        return {
            type: type
        };
    }
}

function prepareAnimationFrameAttribute(target) {
    const transientTarget = target;
    return transientTarget.attribute || (transientTarget.attribute = {}), transientTarget.attribute === transientTarget.baseAttributes && transientTarget.detachAttributeFromBaseAttributes(), 
    transientTarget.attributeMayContainTransientAttrs = !0, transientTarget.attribute;
}

function commitAnimationFrameAttribute(target) {
    target.onAttributeUpdate(animateUpdateContext);
}

function applyAnimationFrameAttributes(target, attributes) {
    if (!attributes) return;
    const targetAttribute = prepareAnimationFrameAttribute(target);
    for (const key in attributes) Object.prototype.hasOwnProperty.call(attributes, key) && (targetAttribute[key] = attributes[key]);
    commitAnimationFrameAttribute(target);
}

function applyAnimationFrameNumberAttributes(target, keys, from, to, ratio) {
    const targetAttribute = prepareAnimationFrameAttribute(target);
    for (let i = 0; i < keys.length; i++) {
        const key = keys[i];
        targetAttribute[key] = from[key] + (to[key] - from[key]) * ratio;
    }
    commitAnimationFrameAttribute(target);
}

function applyAnimationTransientAttributes(target, attributes, type = constant_1.AttributeUpdateType.ANIMATE_UPDATE) {
    if (!attributes) return;
    const context = getAnimationContext(type);
    target.applyAnimationTransientAttributes(attributes, !1, context);
}

function applyAppearStartAttributes(target, attributes) {
    applyAnimationTransientAttributes(target, attributes, constant_1.AttributeUpdateType.ANIMATE_BIND);
}

exports.applyAnimationFrameAttributes = applyAnimationFrameAttributes, exports.applyAnimationFrameNumberAttributes = applyAnimationFrameNumberAttributes, 
exports.applyAnimationTransientAttributes = applyAnimationTransientAttributes, exports.applyAppearStartAttributes = applyAppearStartAttributes;
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