@awayjs/core/dist/lib/projections/OrthographicProjection.js

AwayJS core classes

import { __extends } from "tslib";
import { Vector3D } from '../geom/Vector3D';
import { ProjectionBase } from './ProjectionBase';
import { CoordinateSystem } from './CoordinateSystem';
var OrthographicProjection = /** @class */ (function (_super) {
    __extends(OrthographicProjection, _super);
    function OrthographicProjection(scale, coordinateSystem) {
        if (scale === void 0) { scale = 1; }
        if (coordinateSystem === void 0) { coordinateSystem = CoordinateSystem.LEFT_HANDED; }
        var _this = _super.call(this, coordinateSystem) || this;
        _this.scale = scale;
        return _this;
    }
    /**
     *
     * @param position
     * @param target
     */
    OrthographicProjection.prototype.project = function (position, target) {
        if (target === void 0) { target = null; }
        var v = this.viewMatrix3D.transformVector(position, target);
        v.y = -v.y;
        v.z = (v.z * (this._far - this._near) + this._far + this._near) / 2;
        v.w = 1;
        return v;
    };
    /**
     *
     * @param nX
     * @param nY
     * @param sZ
     * @param target
     */
    OrthographicProjection.prototype.unproject = function (nX, nY, sZ, target) {
        if (target === void 0) { target = null; }
        if (target == null)
            target = new Vector3D();
        target.x = nX * sZ;
        target.y = -nY * sZ;
        target.z = (sZ * 2 - this._far - this._near) / (this._far - this._near);
        target.w = 1;
        this.inverseViewMatrix3D.transformVector(target, target);
        target.w = 1;
        return target;
    };
    //@override
    OrthographicProjection.prototype.clone = function () {
        var clone = new OrthographicProjection(this.scale, this._coordinateSystem);
        clone._near = this._near;
        clone._far = this._far;
        clone._coordinateSystem = this._coordinateSystem;
        return clone;
    };
    //@override
    OrthographicProjection.prototype._updateFrustumMatrix3D = function () {
        _super.prototype._updateFrustumMatrix3D.call(this);
        var raw = this._frustumMatrix3D._rawData;
        var scaleV = this._scale;
        var scaleH = this._scale / this._ratio;
        this._frustumRect.left = 0.5 * (this._originX - 1) / scaleH;
        this._frustumRect.top = 0.5 * (this._originY - 1) / scaleV;
        this._frustumRect.right = this._frustumRect.left + 1 / scaleH;
        this._frustumRect.bottom = this._frustumRect.top + 1 / scaleV;
        raw[0] = 2 * scaleH; //2/(right - left);
        raw[5] = 2 * scaleV; //2/(bottom - top);
        raw[12] = this._originX; //(right + left)/(right - left)
        raw[13] = this._originY; //(bottom + top)/(bottom - top);
        raw[10] = 2 / (this._far - this._near);
        raw[14] = -(this._far + this._near) / (this._far - this._near);
        raw[1] = raw[2] = raw[3] = raw[4] = raw[6] = raw[7] = raw[8] = raw[9] = raw[11] = 0;
        raw[15] = 1;
    };
    OrthographicProjection.prototype._updateProperties = function () {
        _super.prototype._updateProperties.call(this);
        var rawData = this._frustumMatrix3D._rawData;
        this._near = -(rawData[14] + 1) / rawData[10];
        this._far = -(rawData[14] - 1) / rawData[10];
        this._originX = rawData[8];
        this._originY = rawData[9];
        this._scale = rawData[5] / 2;
        this._ratio = 0.5 * this._scale / rawData[0];
    };
    return OrthographicProjection;
}(ProjectionBase));
export { OrthographicProjection };