playcanvas/build/playcanvas.dbg/src/extras/gizmo/scale-gizmo.js

Open-source WebGL/WebGPU 3D engine for the web

var __defProp = Object.defineProperty;
var __defNormalProp = (obj, key, value) => key in obj ? __defProp(obj, key, { enumerable: true, configurable: true, writable: true, value }) : obj[key] = value;
var __publicField = (obj, key, value) => __defNormalProp(obj, typeof key !== "symbol" ? key + "" : key, value);
import { Vec3 } from "../../core/math/vec3.js";
import { Quat } from "../../core/math/quat.js";
import { TransformGizmo } from "./transform-gizmo.js";
import { BoxShape } from "./shape/box-shape.js";
import { PlaneShape } from "./shape/plane-shape.js";
import { BoxLineShape } from "./shape/boxline-shape.js";
const v1 = new Vec3();
const v2 = new Vec3();
const point = new Vec3();
const delta = new Vec3();
const q = new Quat();
const GLANCE_EPSILON = 0.01;
class ScaleGizmo extends TransformGizmo {
  /**
   * Creates a new ScaleGizmo object. Use {@link Gizmo.createLayer} to create the layer
   * required to display the gizmo.
   *
   * @param {CameraComponent} camera - The camera component.
   * @param {Layer} layer - The layer responsible for rendering the gizmo.
   * @example
   * const gizmo = new ScaleGizmo(camera, layer);
   */
  constructor(camera, layer) {
    super(camera, layer, "gizmo:scale");
    __publicField(this, "_shapes", {
      xyz: new BoxShape(this._device, {
        axis: "xyz",
        layers: [this._layer.id],
        defaultColor: this._theme.shapeBase.xyz,
        hoverColor: this._theme.shapeHover.xyz,
        disabledColor: this._theme.disabled
      }),
      yz: new PlaneShape(this._device, {
        axis: "x",
        layers: [this._layer.id],
        rotation: new Vec3(0, 0, -90),
        defaultColor: this._theme.shapeBase.x,
        hoverColor: this._theme.shapeHover.x,
        disabledColor: this._theme.disabled,
        depth: 1
      }),
      xz: new PlaneShape(this._device, {
        axis: "y",
        layers: [this._layer.id],
        rotation: new Vec3(0, 0, 0),
        defaultColor: this._theme.shapeBase.y,
        hoverColor: this._theme.shapeHover.y,
        disabledColor: this._theme.disabled,
        depth: 1
      }),
      xy: new PlaneShape(this._device, {
        axis: "z",
        layers: [this._layer.id],
        rotation: new Vec3(90, 0, 0),
        defaultColor: this._theme.shapeBase.z,
        hoverColor: this._theme.shapeHover.z,
        disabledColor: this._theme.disabled,
        depth: 1
      }),
      x: new BoxLineShape(this._device, {
        axis: "x",
        layers: [this._layer.id],
        rotation: new Vec3(0, 0, -90),
        defaultColor: this._theme.shapeBase.x,
        hoverColor: this._theme.shapeHover.x,
        disabledColor: this._theme.disabled
      }),
      y: new BoxLineShape(this._device, {
        axis: "y",
        layers: [this._layer.id],
        rotation: new Vec3(0, 0, 0),
        defaultColor: this._theme.shapeBase.y,
        hoverColor: this._theme.shapeHover.y,
        disabledColor: this._theme.disabled
      }),
      z: new BoxLineShape(this._device, {
        axis: "z",
        layers: [this._layer.id],
        rotation: new Vec3(90, 0, 0),
        defaultColor: this._theme.shapeBase.z,
        hoverColor: this._theme.shapeHover.z,
        disabledColor: this._theme.disabled
      })
    });
    /**
     * @type {GizmoSpace}
     * @protected
     */
    __publicField(this, "_coordSpace", "local");
    /**
     * Internal mapping from each attached node to their starting scale.
     *
     * @type {Map<GraphNode, Vec3>}
     * @private
     */
    __publicField(this, "_nodeScales", /* @__PURE__ */ new Map());
    /**
     * Internal state if transform should use uniform scaling.
     *
     * @protected
     */
    __publicField(this, "_uniform", false);
    /** @override */
    __publicField(this, "snapIncrement", 1);
    /**
     * Flips the planes to face the camera.
     */
    __publicField(this, "flipPlanes", true);
    /**
     * The lower bound for scaling.
     */
    __publicField(this, "lowerBoundScale", new Vec3(-Infinity, -Infinity, -Infinity));
    this._createTransform();
    this.on(TransformGizmo.EVENT_TRANSFORMSTART, () => {
      this._storeNodeScales();
      this._drag(true);
    });
    this.on(TransformGizmo.EVENT_TRANSFORMMOVE, (point2) => {
      const scaleDelta = delta.copy(point2).sub(this._selectionStartPoint);
      if (this.snap) {
        scaleDelta.mulScalar(1 / this.snapIncrement);
        scaleDelta.round();
        scaleDelta.mulScalar(this.snapIncrement);
      }
      scaleDelta.mulScalar(1 / this._scale);
      this._setNodeScales(scaleDelta.add(Vec3.ONE));
    });
    this.on(TransformGizmo.EVENT_TRANSFORMEND, () => {
      this._drag(false);
    });
    this.on(TransformGizmo.EVENT_NODESDETACH, () => {
      this._nodeScales.clear();
    });
  }
  set coordSpace(value) {
  }
  get coordSpace() {
    return this._coordSpace;
  }
  /**
   * Sets the uniform scaling state for planes.
   *
   * @type {boolean}
   */
  set uniform(value) {
    this._uniform = value ?? this._uniform;
  }
  /**
   * Gets the uniform scaling state for planes.
   *
   * @type {boolean}
   */
  get uniform() {
    return this._uniform;
  }
  /**
   * Sets the axis gap.
   *
   * @type {number}
   */
  set axisGap(value) {
    this._setArrowProp("gap", value);
  }
  /**
   * Gets the axis gap.
   *
   * @type {number}
   */
  get axisGap() {
    return this._shapes.x.gap;
  }
  /**
   * Sets the axis line thickness.
   *
   * @type {number}
   */
  set axisLineThickness(value) {
    this._setArrowProp("lineThickness", value);
  }
  /**
   * Gets the axis line thickness.
   *
   * @type {number}
   */
  get axisLineThickness() {
    return this._shapes.x.lineThickness;
  }
  /**
   * Sets the axis line length.
   *
   * @type {number}
   */
  set axisLineLength(value) {
    this._setArrowProp("lineLength", value);
  }
  /**
   * Gets the axis line length.
   *
   * @type {number}
   */
  get axisLineLength() {
    return this._shapes.x.lineLength;
  }
  /**
   * Sets the axis line tolerance.
   *
   * @type {number}
   */
  set axisLineTolerance(value) {
    this._setArrowProp("tolerance", value);
  }
  /**
   * Gets the axis line tolerance.
   *
   * @type {number}
   */
  get axisLineTolerance() {
    return this._shapes.x.tolerance;
  }
  /**
   * Sets the axis box size.
   *
   * @type {number}
   */
  set axisBoxSize(value) {
    this._setArrowProp("boxSize", value);
  }
  /**
   * Gets the axis box size.
   *
   * @type {number}
   */
  get axisBoxSize() {
    return this._shapes.x.boxSize;
  }
  /**
   * Sets the plane size.
   *
   * @type {number}
   */
  set axisPlaneSize(value) {
    this._setPlaneProp("size", value);
  }
  /**
   * Gets the plane size.
   *
   * @type {number}
   */
  get axisPlaneSize() {
    return this._shapes.yz.size;
  }
  /**
   * Sets the plane gap.
   *
   * @type {number}
   */
  set axisPlaneGap(value) {
    this._setPlaneProp("gap", value);
  }
  /**
   * Gets the plane gap.
   *
   * @type {number}
   */
  get axisPlaneGap() {
    return this._shapes.yz.gap;
  }
  /**
   * Sets the axis center size.
   *
   * @type {number}
   */
  set axisCenterSize(value) {
    this._shapes.xyz.size = value;
  }
  /**
   * Gets the axis center size.
   *
   * @type {number}
   */
  get axisCenterSize() {
    return this._shapes.xyz.size;
  }
  /**
   * @type {boolean}
   * @deprecated Use {@link flipPlanes} instead.
   * @ignore
   */
  set flipShapes(value) {
    this.flipPlanes = value;
  }
  /**
   * @type {boolean}
   * @deprecated Use {@link flipPlanes} instead.
   * @ignore
   */
  get flipShapes() {
    return this.flipPlanes;
  }
  /**
   * @param {string} prop - The property name.
   * @param {any} value - The property value.
   * @private
   */
  _setArrowProp(prop, value) {
    this._shapes.x[prop] = value;
    this._shapes.y[prop] = value;
    this._shapes.z[prop] = value;
  }
  /**
   * @param {string} prop - The property name.
   * @param {any} value - The property value.
   * @private
   */
  _setPlaneProp(prop, value) {
    this._shapes.yz[prop] = value;
    this._shapes.xz[prop] = value;
    this._shapes.xy[prop] = value;
  }
  /** @private */
  _shapesLookAtCamera() {
    const cameraDir = this.cameraDir;
    let changed = false;
    let dot, enabled;
    dot = cameraDir.dot(this.root.right);
    enabled = 1 - Math.abs(dot) > GLANCE_EPSILON;
    if (this._shapes.x.entity.enabled !== enabled) {
      this._shapes.x.entity.enabled = enabled;
      changed = true;
    }
    dot = cameraDir.dot(this.root.up);
    enabled = 1 - Math.abs(dot) > GLANCE_EPSILON;
    if (this._shapes.y.entity.enabled !== enabled) {
      this._shapes.y.entity.enabled = enabled;
      changed = true;
    }
    dot = cameraDir.dot(this.root.forward);
    enabled = 1 - Math.abs(dot) > GLANCE_EPSILON;
    if (this._shapes.z.entity.enabled !== enabled) {
      this._shapes.z.entity.enabled = enabled;
      changed = true;
    }
    let flipped;
    v1.cross(cameraDir, this.root.right);
    enabled = 1 - v1.length() > GLANCE_EPSILON;
    if (this._shapes.yz.entity.enabled !== enabled) {
      this._shapes.yz.entity.enabled = enabled;
      changed = true;
    }
    flipped = this.flipPlanes ? v2.set(0, +(v1.dot(this.root.forward) < 0), +(v1.dot(this.root.up) < 0)) : Vec3.ZERO;
    if (!this._shapes.yz.flipped.equals(flipped)) {
      this._shapes.yz.flipped = flipped;
      changed = true;
    }
    v1.cross(cameraDir, this.root.forward);
    enabled = 1 - v1.length() > GLANCE_EPSILON;
    if (this._shapes.xy.entity.enabled !== enabled) {
      this._shapes.xy.entity.enabled = enabled;
      changed = true;
    }
    flipped = this.flipPlanes ? v2.set(+(v1.dot(this.root.up) < 0), +(v1.dot(this.root.right) > 0), 0) : Vec3.ZERO;
    if (!this._shapes.xy.flipped.equals(flipped)) {
      this._shapes.xy.flipped = flipped;
      changed = true;
    }
    v1.cross(cameraDir, this.root.up);
    enabled = 1 - v1.length() > GLANCE_EPSILON;
    if (this._shapes.xz.entity.enabled !== enabled) {
      this._shapes.xz.entity.enabled = enabled;
      changed = true;
    }
    flipped = this.flipPlanes ? v2.set(+(v1.dot(this.root.forward) > 0), 0, +(v1.dot(this.root.right) > 0)) : Vec3.ZERO;
    if (!this._shapes.xz.flipped.equals(flipped)) {
      this._shapes.xz.flipped = flipped;
      changed = true;
    }
    if (changed) {
      this._renderUpdate = true;
    }
  }
  /**
   * @param {boolean} state - The state.
   * @private
   */
  _drag(state) {
    for (const axis in this._shapes) {
      const shape = this._shapes[axis];
      switch (this.dragMode) {
        case "show": {
          continue;
        }
        case "hide": {
          shape.visible = !state;
          continue;
        }
        case "selected": {
          if (this._selectedAxis === "xyz") {
            shape.visible = state ? axis.length === 1 : true;
            continue;
          }
          if (this._selectedIsPlane) {
            shape.visible = state ? axis.length === 1 && !axis.includes(this._selectedAxis) : true;
            continue;
          }
          shape.visible = state ? axis === this._selectedAxis : true;
          continue;
        }
      }
    }
    this._renderUpdate = true;
  }
  /** @private */
  _storeNodeScales() {
    for (let i = 0; i < this.nodes.length; i++) {
      const node = this.nodes[i];
      this._nodeScales.set(node, node.getLocalScale().clone());
    }
  }
  /**
   * @param {Vec3} scaleDelta - The point delta.
   * @private
   */
  _setNodeScales(scaleDelta) {
    for (let i = 0; i < this.nodes.length; i++) {
      const node = this.nodes[i];
      const scale = this._nodeScales.get(node);
      if (!scale) {
        continue;
      }
      node.setLocalScale(v1.copy(scale).mul(scaleDelta).max(this.lowerBoundScale));
    }
  }
  /**
   * @param {number} x - The x coordinate.
   * @param {number} y - The y coordinate.
   * @returns {Vec3} The point (space is {@link TransformGizmo#coordSpace}).
   * @protected
   */
  _screenToPoint(x, y) {
    const gizmoPos = this.root.getLocalPosition();
    const mouseWPos = this._camera.screenToWorld(x, y, 1);
    const axis = this._selectedAxis;
    const isPlane = this._selectedIsPlane;
    const ray = this._createRay(mouseWPos);
    const plane = this._createPlane(axis, axis === "xyz", !isPlane);
    if (!plane.intersectsRay(ray, point)) {
      return point;
    }
    if (axis === "xyz") {
      const projDir = v2.add2(this._camera.entity.up, this._camera.entity.right).normalize();
      const dir = v1.sub2(point, gizmoPos);
      const v = dir.length() * dir.normalize().dot(projDir);
      point.set(v, v, v);
      return point;
    }
    q.copy(this._rootStartRot).invert().transformVector(point, point);
    if (!isPlane) {
      this._projectToAxis(point, axis);
    }
    if (this._uniform && isPlane) {
      v1.set(1, 1, 1);
      v1[axis] = 0;
      point.copy(v1.mulScalar(v1.dot(point)));
      point[axis] = 0;
    }
    return point;
  }
  /** @override */
  prerender() {
    super.prerender();
    if (!this.enabled) {
      return;
    }
    this._shapesLookAtCamera();
  }
}
export {
  ScaleGizmo
};