phaser/Phaser/gameobjects/TransformManager.ts

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14 KiB
TypeScript

/// <reference path="../_definitions.ts" />
/**
* Phaser - Components - TransformManager
*/
module Phaser.Components {
export class TransformManager {
/**
* Creates a new TransformManager component
* @param parent The game object using this transform
*/
constructor(parent) {
this.game = parent.game;
this.parent = parent;
this.local = new Phaser.Mat3;
this.scrollFactor = new Phaser.Vec2(1, 1);
this.origin = new Phaser.Vec2;
this.scale = new Phaser.Vec2(1, 1);
this.skew = new Phaser.Vec2;
this.center = new Phaser.Point;
this.upperLeft = new Phaser.Point;
this.upperRight = new Phaser.Point;
this.bottomLeft = new Phaser.Point;
this.bottomRight = new Phaser.Point;
this._pos = new Phaser.Point;
this._scale = new Phaser.Point;
this._size = new Phaser.Point;
this._halfSize = new Phaser.Point;
this._offset = new Phaser.Point;
this._origin = new Phaser.Point;
this._sc = new Phaser.Point;
this._scA = new Phaser.Point;
}
private _rotation: number;
private _dirty: bool = false;
// Cache vars
private _pos: Phaser.Point;
private _scale: Phaser.Point;
private _size: Phaser.Point;
private _halfSize: Phaser.Point;
private _offset: Phaser.Point;
private _origin: Phaser.Point;
private _sc: Phaser.Point;
private _scA: Phaser.Point;
private _angle: number;
private _distance: number;
private _prevRotation: number;
private _flippedX: bool;
private _flippedY: bool;
/**
* Reference to Phaser.Game
*/
public game: Phaser.Game;
/**
* Reference to the parent object (Sprite, Group, etc)
*/
public parent: Phaser.Sprite;
/**
* Scale of the object. A scale of 1.0 is the original size. 0.5 half size. 2.0 double sized.
*/
public scale: Phaser.Vec2;
/**
* Skew the object along the x and y axis. A skew value of 0 is no skew.
*/
public skew: Phaser.Vec2;
/**
* The influence of camera movement upon the object, if supported.
*/
public scrollFactor: Phaser.Vec2;
/**
* The origin is the point around which scale and rotation takes place and defaults to the top-left of the sprite.
*/
public origin: Phaser.Vec2;
/**
* This value is added to the rotation of the object.
* For example if you had a texture drawn facing straight up then you could set
* rotationOffset to 90 and it would correspond correctly with Phasers right-handed coordinate system.
* @type {number}
*/
public rotationOffset: number = 0;
/**
* The rotation of the object in degrees. Phaser uses a right-handed coordinate system, where 0 points to the right.
*/
public rotation: number = 0;
/**
* The center of the Sprite in world coordinates, after taking scaling and rotation into consideration
*/
public center: Phaser.Point;
/**
* The upper-left corner of the Sprite in world coordinates, after taking scaling and rotation into consideration
*/
public upperLeft: Phaser.Point;
/**
* The upper-right corner of the Sprite in world coordinates, after taking scaling and rotation into consideration
*/
public upperRight: Phaser.Point;
/**
* The bottom-left corner of the Sprite in world coordinates, after taking scaling and rotation into consideration
*/
public bottomLeft: Phaser.Point;
/**
* The bottom-right corner of the Sprite in world coordinates, after taking scaling and rotation into consideration
*/
public bottomRight: Phaser.Point;
/**
* The local transform matrix
*/
public local: Phaser.Mat3;
/**
* The distance from the center of the transform to the rotation origin.
*/
public get distance(): number {
return this._distance;
}
/**
* The angle between the center of the transform to the rotation origin.
*/
public get angleToCenter(): number {
return this._angle;
}
/**
* The offset on the X axis of the origin That is the difference between the top left of the Sprite and the origin.x.
* So if the origin.x is 0 the offsetX will be 0. If the origin.x is 0.5 then offsetX will be sprite width / 2, and so on.
*/
public get offsetX(): number {
return this._offset.x;
}
/**
* The offset on the Y axis of the origin
*/
public get offsetY(): number {
return this._offset.y;
}
/**
* Half the width of the parent sprite, taking into consideration scaling
*/
public get halfWidth(): number {
return this._halfSize.x;
}
/**
* Half the height of the parent sprite, taking into consideration scaling
*/
public get halfHeight(): number {
return this._halfSize.y;
}
/**
* The equivalent of Math.sin(rotation + rotationOffset)
*/
public get sin(): number {
return this._sc.x;
}
/**
* The equivalent of Math.cos(rotation + rotationOffset)
*/
public get cos(): number {
return this._sc.y;
}
/**
* Moves the sprite so its center is located on the given x and y coordinates.
* Doesn't change the origin of the sprite.
*/
public centerOn(x: number, y: number) {
this.parent.x = x + (this.parent.x - this.center.x);
this.parent.y = y + (this.parent.y - this.center.y);
//this.setCache();
}
/**
* Populates the transform cache. Called by the parent object on creation.
*/
public setCache() {
this._pos.x = this.parent.x;
this._pos.y = this.parent.y;
this._halfSize.x = this.parent.width / 2;
this._halfSize.y = this.parent.height / 2;
this._offset.x = this.origin.x * this.parent.width;
this._offset.y = this.origin.y * this.parent.height;
this._angle = Math.atan2(this.halfHeight - this._offset.x, this.halfWidth - this._offset.y);
this._distance = Math.sqrt(((this._offset.x - this._halfSize.x) * (this._offset.x - this._halfSize.x)) + ((this._offset.y - this._halfSize.y) * (this._offset.y - this._halfSize.y)));
this._size.x = this.parent.width;
this._size.y = this.parent.height;
this._origin.x = this.origin.x;
this._origin.y = this.origin.y;
this._scA.x = Math.sin((this.rotation + this.rotationOffset) * Phaser.GameMath.DEG_TO_RAD + this._angle);
this._scA.y = Math.cos((this.rotation + this.rotationOffset) * Phaser.GameMath.DEG_TO_RAD + this._angle);
this._prevRotation = this.rotation;
if (this.parent.texture && this.parent.texture.renderRotation)
{
this._sc.x = Math.sin((this.rotation + this.rotationOffset) * Phaser.GameMath.DEG_TO_RAD);
this._sc.y = Math.cos((this.rotation + this.rotationOffset) * Phaser.GameMath.DEG_TO_RAD);
}
else
{
this._sc.x = 0;
this._sc.y = 1;
}
this.center.x = this.parent.x + this._distance * this._scA.y;
this.center.y = this.parent.y + this._distance * this._scA.x;
this.upperLeft.setTo(this.center.x - this._halfSize.x * this._sc.y + this._halfSize.y * this._sc.x, this.center.y - this._halfSize.y * this._sc.y - this._halfSize.x * this._sc.x);
this.upperRight.setTo(this.center.x + this._halfSize.x * this._sc.y + this._halfSize.y * this._sc.x, this.center.y - this._halfSize.y * this._sc.y + this._halfSize.x * this._sc.x);
this.bottomLeft.setTo(this.center.x - this._halfSize.x * this._sc.y - this._halfSize.y * this._sc.x, this.center.y + this._halfSize.y * this._sc.y - this._halfSize.x * this._sc.x);
this.bottomRight.setTo(this.center.x + this._halfSize.x * this._sc.y - this._halfSize.y * this._sc.x, this.center.y + this._halfSize.y * this._sc.y + this._halfSize.x * this._sc.x);
this._pos.x = this.parent.x;
this._pos.y = this.parent.y;
this._flippedX = this.parent.texture.flippedX;
this._flippedY = this.parent.texture.flippedY;
}
/**
* Updates the local transform matrix and the cache values if anything has changed in the parent.
*/
public update() {
// Check cache
this._dirty = false;
// 1) Height or Width change (also triggered by a change in scale) or an Origin change
if (this.parent.width !== this._size.x || this.parent.height !== this._size.y || this.origin.x !== this._origin.x|| this.origin.y !== this._origin.y)
{
this._halfSize.x = this.parent.width / 2;
this._halfSize.y = this.parent.height / 2;
this._offset.x = this.origin.x * this.parent.width;
this._offset.y = this.origin.y * this.parent.height;
this._angle = Math.atan2(this.halfHeight - this._offset.y, this.halfWidth - this._offset.x);
this._distance = Math.sqrt(((this._offset.x - this._halfSize.x) * (this._offset.x - this._halfSize.x)) + ((this._offset.y - this._halfSize.y) * (this._offset.y - this._halfSize.y)));
// Store
this._size.x = this.parent.width;
this._size.y = this.parent.height;
this._origin.x = this.origin.x;
this._origin.y = this.origin.y;
this._dirty = true;
}
// 2) Rotation change
if (this.rotation != this._prevRotation || this._dirty)
{
this._scA.y = Math.cos((this.rotation + this.rotationOffset) * Phaser.GameMath.DEG_TO_RAD + this._angle);
this._scA.x = Math.sin((this.rotation + this.rotationOffset) * Phaser.GameMath.DEG_TO_RAD + this._angle);
if (this.parent.texture.renderRotation)
{
this._sc.x = Math.sin((this.rotation + this.rotationOffset) * Phaser.GameMath.DEG_TO_RAD);
this._sc.y = Math.cos((this.rotation + this.rotationOffset) * Phaser.GameMath.DEG_TO_RAD);
}
else
{
this._sc.x = 0;
this._sc.y = 1;
}
// Store
this._prevRotation = this.rotation;
this._dirty = true;
}
// 3) If it has moved (or any of the above) then update the edges and center
if (this._dirty || this.parent.x != this._pos.x || this.parent.y != this._pos.y)
{
this.center.x = this.parent.x + this._distance * this._scA.y;
this.center.y = this.parent.y + this._distance * this._scA.x;
this.upperLeft.setTo(this.center.x - this._halfSize.x * this._sc.y + this._halfSize.y * this._sc.x, this.center.y - this._halfSize.y * this._sc.y - this._halfSize.x * this._sc.x);
this.upperRight.setTo(this.center.x + this._halfSize.x * this._sc.y + this._halfSize.y * this._sc.x, this.center.y - this._halfSize.y * this._sc.y + this._halfSize.x * this._sc.x);
this.bottomLeft.setTo(this.center.x - this._halfSize.x * this._sc.y - this._halfSize.y * this._sc.x, this.center.y + this._halfSize.y * this._sc.y - this._halfSize.x * this._sc.x);
this.bottomRight.setTo(this.center.x + this._halfSize.x * this._sc.y - this._halfSize.y * this._sc.x, this.center.y + this._halfSize.y * this._sc.y + this._halfSize.x * this._sc.x);
this._pos.x = this.parent.x;
this._pos.y = this.parent.y;
// Translate
this.local.data[2] = this.parent.x;
this.local.data[5] = this.parent.y;
}
// Scale and Skew
if (this._dirty || this._flippedX != this.parent.texture.flippedX)
{
this._flippedX = this.parent.texture.flippedX;
if (this._flippedX)
{
this.local.data[0] = this._sc.y * -this.scale.x;
this.local.data[3] = (this._sc.x * -this.scale.x) + this.skew.x;
}
else
{
this.local.data[0] = this._sc.y * this.scale.x;
this.local.data[3] = (this._sc.x * this.scale.x) + this.skew.x;
}
}
if (this._dirty || this._flippedY != this.parent.texture.flippedY)
{
this._flippedY = this.parent.texture.flippedY;
if (this._flippedY)
{
this.local.data[4] = this._sc.y * -this.scale.y;
this.local.data[1] = -(this._sc.x * -this.scale.y) + this.skew.y;
}
else
{
this.local.data[4] = this._sc.y * this.scale.y;
this.local.data[1] = -(this._sc.x * this.scale.y) + this.skew.y;
}
}
}
}
}