app/node_modules/@babylonjs/core/Lights/pointLight.js

import { __decorate } from "../tslib.es6.js";
import { serialize } from "../Misc/decorators.js";
import { Matrix, Vector3 } from "../Maths/math.vector.js";
import { Node } from "../node.js";
import { Light } from "./light.js";
import { ShadowLight } from "./shadowLight.js";
Node.AddNodeConstructor("Light_Type_0", (name, scene) => {
    return () => new PointLight(name, Vector3.Zero(), scene);
});
/**
 * A point light is a light defined by an unique point in world space.
 * The light is emitted in every direction from this point.
 * A good example of a point light is a standard light bulb.
 * Documentation: https://doc.babylonjs.com/features/featuresDeepDive/lights/lights_introduction
 */
export class PointLight extends ShadowLight {
    /**
     * Getter: In case of direction provided, the shadow will not use a cube texture but simulate a spot shadow as a fallback
     * This specifies what angle the shadow will use to be created.
     *
     * It default to 90 degrees to work nicely with the cube texture generation for point lights shadow maps.
     */
    get shadowAngle() {
        return this._shadowAngle;
    }
    /**
     * Setter: In case of direction provided, the shadow will not use a cube texture but simulate a spot shadow as a fallback
     * This specifies what angle the shadow will use to be created.
     *
     * It default to 90 degrees to work nicely with the cube texture generation for point lights shadow maps.
     */
    set shadowAngle(value) {
        this._shadowAngle = value;
        this.forceProjectionMatrixCompute();
    }
    /**
     * Gets the direction if it has been set.
     * In case of direction provided, the shadow will not use a cube texture but simulate a spot shadow as a fallback
     */
    get direction() {
        return this._direction;
    }
    /**
     * In case of direction provided, the shadow will not use a cube texture but simulate a spot shadow as a fallback
     */
    set direction(value) {
        const previousNeedCube = this.needCube();
        this._direction = value;
        if (this.needCube() !== previousNeedCube && this._shadowGenerators) {
            const iterator = this._shadowGenerators.values();
            for (let key = iterator.next(); key.done !== true; key = iterator.next()) {
                const shadowGenerator = key.value;
                shadowGenerator.recreateShadowMap();
            }
        }
    }
    /**
     * Creates a PointLight object from the passed name and position (Vector3) and adds it in the scene.
     * A PointLight emits the light in every direction.
     * It can cast shadows.
     * If the scene camera is already defined and you want to set your PointLight at the camera position, just set it :
     * ```javascript
     * var pointLight = new PointLight("pl", camera.position, scene);
     * ```
     * Documentation : https://doc.babylonjs.com/features/featuresDeepDive/lights/lights_introduction
     * @param name The light friendly name
     * @param position The position of the point light in the scene
     * @param scene The scene the lights belongs to
     */
    constructor(name, position, scene) {
        super(name, scene);
        this._shadowAngle = Math.PI / 2;
        this.position = position;
    }
    /**
     * Returns the string "PointLight"
     * @returns the class name
     */
    getClassName() {
        return "PointLight";
    }
    /**
     * Returns the integer 0.
     * @returns The light Type id as a constant defines in Light.LIGHTTYPEID_x
     */
    getTypeID() {
        return Light.LIGHTTYPEID_POINTLIGHT;
    }
    /**
     * Specifies whether or not the shadowmap should be a cube texture.
     * @returns true if the shadowmap needs to be a cube texture.
     */
    needCube() {
        return !this.direction;
    }
    /**
     * Returns a new Vector3 aligned with the PointLight cube system according to the passed cube face index (integer).
     * @param faceIndex The index of the face we are computed the direction to generate shadow
     * @returns The set direction in 2d mode otherwise the direction to the cubemap face if needCube() is true
     */
    getShadowDirection(faceIndex) {
        if (this.direction) {
            return super.getShadowDirection(faceIndex);
        }
        else {
            switch (faceIndex) {
                case 0:
                    return new Vector3(1.0, 0.0, 0.0);
                case 1:
                    return new Vector3(-1.0, 0.0, 0.0);
                case 2:
                    return new Vector3(0.0, -1.0, 0.0);
                case 3:
                    return new Vector3(0.0, 1.0, 0.0);
                case 4:
                    return new Vector3(0.0, 0.0, 1.0);
                case 5:
                    return new Vector3(0.0, 0.0, -1.0);
            }
        }
        return Vector3.Zero();
    }
    /**
     * Sets the passed matrix "matrix" as a left-handed perspective projection matrix with the following settings :
     * - fov = PI / 2
     * - aspect ratio : 1.0
     * - z-near and far equal to the active camera minZ and maxZ.
     * Returns the PointLight.
     * @param matrix
     * @param viewMatrix
     * @param renderList
     */
    // eslint-disable-next-line @typescript-eslint/no-unused-vars
    _setDefaultShadowProjectionMatrix(matrix, viewMatrix, renderList) {
        const activeCamera = this.getScene().activeCamera;
        if (!activeCamera) {
            return;
        }
        const minZ = this.shadowMinZ !== undefined ? this.shadowMinZ : activeCamera.minZ;
        const maxZ = this.shadowMaxZ !== undefined ? this.shadowMaxZ : activeCamera.maxZ;
        const useReverseDepthBuffer = this.getScene().getEngine().useReverseDepthBuffer;
        Matrix.PerspectiveFovLHToRef(this.shadowAngle, 1.0, useReverseDepthBuffer ? maxZ : minZ, useReverseDepthBuffer ? minZ : maxZ, matrix, true, this._scene.getEngine().isNDCHalfZRange, undefined, useReverseDepthBuffer);
    }
    _buildUniformLayout() {
        this._uniformBuffer.addUniform("vLightData", 4);
        this._uniformBuffer.addUniform("vLightDiffuse", 4);
        this._uniformBuffer.addUniform("vLightSpecular", 4);
        this._uniformBuffer.addUniform("vLightFalloff", 4);
        this._uniformBuffer.addUniform("shadowsInfo", 3);
        this._uniformBuffer.addUniform("depthValues", 2);
        this._uniformBuffer.create();
    }
    /**
     * Sets the passed Effect "effect" with the PointLight transformed position (or position, if none) and passed name (string).
     * @param effect The effect to update
     * @param lightIndex The index of the light in the effect to update
     * @returns The point light
     */
    transferToEffect(effect, lightIndex) {
        if (this.computeTransformedInformation()) {
            this._uniformBuffer.updateFloat4("vLightData", this.transformedPosition.x, this.transformedPosition.y, this.transformedPosition.z, 0.0, lightIndex);
        }
        else {
            this._uniformBuffer.updateFloat4("vLightData", this.position.x, this.position.y, this.position.z, 0, lightIndex);
        }
        this._uniformBuffer.updateFloat4("vLightFalloff", this.range, this._inverseSquaredRange, 0, 0, lightIndex);
        return this;
    }
    transferToNodeMaterialEffect(effect, lightDataUniformName) {
        if (this.computeTransformedInformation()) {
            effect.setFloat3(lightDataUniformName, this.transformedPosition.x, this.transformedPosition.y, this.transformedPosition.z);
        }
        else {
            effect.setFloat3(lightDataUniformName, this.position.x, this.position.y, this.position.z);
        }
        return this;
    }
    /**
     * Prepares the list of defines specific to the light type.
     * @param defines the list of defines
     * @param lightIndex defines the index of the light for the effect
     */
    prepareLightSpecificDefines(defines, lightIndex) {
        defines["POINTLIGHT" + lightIndex] = true;
    }
}
__decorate([
    serialize()
], PointLight.prototype, "shadowAngle", null);
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