lottie-web
Version:
After Effects plugin for exporting animations to SVG + JavaScript or canvas + JavaScript
171 lines (159 loc) • 6.35 kB
JavaScript
import {
degToRads,
} from '../../utils/common';
import {
extendPrototype,
} from '../../utils/functionExtensions';
import PropertyFactory from '../../utils/PropertyFactory';
import BaseElement from '../BaseElement';
import HierarchyElement from '../helpers/HierarchyElement';
import FrameElement from '../helpers/FrameElement';
import Matrix from '../../3rd_party/transformation-matrix';
function HCameraElement(data, globalData, comp) {
this.initFrame();
this.initBaseData(data, globalData, comp);
this.initHierarchy();
var getProp = PropertyFactory.getProp;
this.pe = getProp(this, data.pe, 0, 0, this);
if (data.ks.p.s) {
this.px = getProp(this, data.ks.p.x, 1, 0, this);
this.py = getProp(this, data.ks.p.y, 1, 0, this);
this.pz = getProp(this, data.ks.p.z, 1, 0, this);
} else {
this.p = getProp(this, data.ks.p, 1, 0, this);
}
if (data.ks.a) {
this.a = getProp(this, data.ks.a, 1, 0, this);
}
if (data.ks.or.k.length && data.ks.or.k[0].to) {
var i;
var len = data.ks.or.k.length;
for (i = 0; i < len; i += 1) {
data.ks.or.k[i].to = null;
data.ks.or.k[i].ti = null;
}
}
this.or = getProp(this, data.ks.or, 1, degToRads, this);
this.or.sh = true;
this.rx = getProp(this, data.ks.rx, 0, degToRads, this);
this.ry = getProp(this, data.ks.ry, 0, degToRads, this);
this.rz = getProp(this, data.ks.rz, 0, degToRads, this);
this.mat = new Matrix();
this._prevMat = new Matrix();
this._isFirstFrame = true;
// TODO: find a better way to make the HCamera element to be compatible with the LayerInterface and TransformInterface.
this.finalTransform = {
mProp: this,
};
}
extendPrototype([BaseElement, FrameElement, HierarchyElement], HCameraElement);
HCameraElement.prototype.setup = function () {
var i;
var len = this.comp.threeDElements.length;
var comp;
var perspectiveStyle;
var containerStyle;
for (i = 0; i < len; i += 1) {
// [perspectiveElem,container]
comp = this.comp.threeDElements[i];
if (comp.type === '3d') {
perspectiveStyle = comp.perspectiveElem.style;
containerStyle = comp.container.style;
var perspective = this.pe.v + 'px';
var origin = '0px 0px 0px';
var matrix = 'matrix3d(1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1)';
perspectiveStyle.perspective = perspective;
perspectiveStyle.webkitPerspective = perspective;
containerStyle.transformOrigin = origin;
containerStyle.mozTransformOrigin = origin;
containerStyle.webkitTransformOrigin = origin;
perspectiveStyle.transform = matrix;
perspectiveStyle.webkitTransform = matrix;
}
}
};
HCameraElement.prototype.createElements = function () {
};
HCameraElement.prototype.hide = function () {
};
HCameraElement.prototype.renderFrame = function () {
var _mdf = this._isFirstFrame;
var i;
var len;
if (this.hierarchy) {
len = this.hierarchy.length;
for (i = 0; i < len; i += 1) {
_mdf = this.hierarchy[i].finalTransform.mProp._mdf || _mdf;
}
}
if (_mdf || this.pe._mdf || (this.p && this.p._mdf) || (this.px && (this.px._mdf || this.py._mdf || this.pz._mdf)) || this.rx._mdf || this.ry._mdf || this.rz._mdf || this.or._mdf || (this.a && this.a._mdf)) {
this.mat.reset();
if (this.hierarchy) {
len = this.hierarchy.length - 1;
for (i = len; i >= 0; i -= 1) {
var mTransf = this.hierarchy[i].finalTransform.mProp;
this.mat.translate(-mTransf.p.v[0], -mTransf.p.v[1], mTransf.p.v[2]);
this.mat.rotateX(-mTransf.or.v[0]).rotateY(-mTransf.or.v[1]).rotateZ(mTransf.or.v[2]);
this.mat.rotateX(-mTransf.rx.v).rotateY(-mTransf.ry.v).rotateZ(mTransf.rz.v);
this.mat.scale(1 / mTransf.s.v[0], 1 / mTransf.s.v[1], 1 / mTransf.s.v[2]);
this.mat.translate(mTransf.a.v[0], mTransf.a.v[1], mTransf.a.v[2]);
}
}
if (this.p) {
this.mat.translate(-this.p.v[0], -this.p.v[1], this.p.v[2]);
} else {
this.mat.translate(-this.px.v, -this.py.v, this.pz.v);
}
if (this.a) {
var diffVector;
if (this.p) {
diffVector = [this.p.v[0] - this.a.v[0], this.p.v[1] - this.a.v[1], this.p.v[2] - this.a.v[2]];
} else {
diffVector = [this.px.v - this.a.v[0], this.py.v - this.a.v[1], this.pz.v - this.a.v[2]];
}
var mag = Math.sqrt(Math.pow(diffVector[0], 2) + Math.pow(diffVector[1], 2) + Math.pow(diffVector[2], 2));
// var lookDir = getNormalizedPoint(getDiffVector(this.a.v,this.p.v));
var lookDir = [diffVector[0] / mag, diffVector[1] / mag, diffVector[2] / mag];
var lookLengthOnXZ = Math.sqrt(lookDir[2] * lookDir[2] + lookDir[0] * lookDir[0]);
var mRotationX = (Math.atan2(lookDir[1], lookLengthOnXZ));
var mRotationY = (Math.atan2(lookDir[0], -lookDir[2]));
this.mat.rotateY(mRotationY).rotateX(-mRotationX);
}
this.mat.rotateX(-this.rx.v).rotateY(-this.ry.v).rotateZ(this.rz.v);
this.mat.rotateX(-this.or.v[0]).rotateY(-this.or.v[1]).rotateZ(this.or.v[2]);
this.mat.translate(this.globalData.compSize.w / 2, this.globalData.compSize.h / 2, 0);
this.mat.translate(0, 0, this.pe.v);
var hasMatrixChanged = !this._prevMat.equals(this.mat);
if ((hasMatrixChanged || this.pe._mdf) && this.comp.threeDElements) {
len = this.comp.threeDElements.length;
var comp;
var perspectiveStyle;
var containerStyle;
for (i = 0; i < len; i += 1) {
comp = this.comp.threeDElements[i];
if (comp.type === '3d') {
if (hasMatrixChanged) {
var matValue = this.mat.toCSS();
containerStyle = comp.container.style;
containerStyle.transform = matValue;
containerStyle.webkitTransform = matValue;
}
if (this.pe._mdf) {
perspectiveStyle = comp.perspectiveElem.style;
perspectiveStyle.perspective = this.pe.v + 'px';
perspectiveStyle.webkitPerspective = this.pe.v + 'px';
}
}
}
this.mat.clone(this._prevMat);
}
}
this._isFirstFrame = false;
};
HCameraElement.prototype.prepareFrame = function (num) {
this.prepareProperties(num, true);
};
HCameraElement.prototype.destroy = function () {
};
HCameraElement.prototype.getBaseElement = function () { return null; };
export default HCameraElement;