Vec2 Class

Extends ValueType

Module: cc Parent Module: cc

Representation of 2D vectors and points.

Index

Properties
  • x Number
  • y Number
  • ONE Vec2 return a Vec2 object with x = 1 and y = 1.
  • ZERO Vec2 return a Vec2 object with x = 0 and y = 0.
  • UP Vec2 return a Vec2 object with x = 0 and y = 1.
  • RIGHT Vec2 return a Vec2 object with x = 1 and y = 0.
Methods
  • constructor Constructor
  • clone clone a Vec2 value
  • set TODO
  • equals TODO
  • toString TODO
  • lerp TODO
  • addSelf Adds this vector.
  • add Adds two vectors, and returns the new result.
  • subSelf Subtracts one vector from this.
  • sub Subtracts one vector from this, and returns the new result.
  • mulSelf Multiplies this by a number.
  • mul Multiplies by a number, and returns the new result.
  • scaleSelf Multiplies two vectors.
  • scale Multiplies two vectors, and returns the new result.
  • divSelf Divides by a number.
  • div Divides by a number, and returns the new result.
  • negSelf Negates the components.
  • neg Negates the components, and returns the new result.
  • dot Dot product
  • cross Cross product
  • mag Returns the length of this vector.
  • magSqr Returns the squared length of this vector.
  • normalizeSelf Make the length of this vector to 1.
  • normalize Note that the current vector is unchanged and a new normalized vector is returned.
  • angle Get angle in radian between this and vector.
  • signAngle Get angle in radian between this and vector with direction.
  • rotate rotate
  • rotateSelf rotate self

Details

Properties

x
meta description
Type Number
Defined in cocos2d/core/value-types/CCVec2.js:63
y
meta description
Type Number
Defined in cocos2d/core/value-types/CCVec2.js:66
ONE

return a Vec2 object with x = 1 and y = 1.

meta description
Type Vec2
Defined in cocos2d/core/value-types/CCVec2.js:538
ZERO

return a Vec2 object with x = 0 and y = 0.

meta description
Type Vec2
Defined in cocos2d/core/value-types/CCVec2.js:549
UP

return a Vec2 object with x = 0 and y = 1.

meta description
Type Vec2
Defined in cocos2d/core/value-types/CCVec2.js:560

return a Vec2 object with x = 1 and y = 0.

meta description
Type Vec2
Defined in cocos2d/core/value-types/CCVec2.js:571

Methods

constructor

Constructor see Cc/vec2:method or cc.p

meta description
Defined in cocos2d/core/value-types/CCVec2.js:42
Parameters
clone

clone a Vec2 value

meta description
Returns Vec2
Defined in cocos2d/core/value-types/CCVec2.js:73
set

TODO

meta description
Returns Vec2
Defined in cocos2d/core/value-types/CCVec2.js:83
Parameters
  • newValue Vec2 !#en new value to set. !#zh 要设置的新值
equals

TODO

meta description
Returns Boolean
Defined in cocos2d/core/value-types/CCVec2.js:97
Parameters
toString

TODO

meta description
Returns string
Defined in cocos2d/core/value-types/CCVec2.js:108
lerp

TODO

meta description
Returns Vec2
Defined in cocos2d/core/value-types/CCVec2.js:121
Parameters
  • to Vec2
  • ratio number the interpolation coefficient
  • out Vec2 optional, the receiving vector
addSelf

Adds this vector. If you want to save result to another vector, use add() instead.

meta description
Returns Vec2
Defined in cocos2d/core/value-types/CCVec2.js:139
Parameters
Examples
var v = cc.v2(10, 10);
v.addSelf(cc.v2(5, 5));// return Vec2 {x: 15, y: 15};
add

Adds two vectors, and returns the new result.

meta description
Returns Vec2
Defined in cocos2d/core/value-types/CCVec2.js:156
Parameters
  • vector Vec2
  • out Vec2 optional, the receiving vector
Examples
var v = cc.v2(10, 10);
v.add(cc.v2(5, 5));      // return Vec2 {x: 15, y: 15};
var v1;
v.add(cc.v2(5, 5), v1);  // return Vec2 {x: 15, y: 15};
subSelf

Subtracts one vector from this. If you want to save result to another vector, use sub() instead.

meta description
Returns Vec2
Defined in cocos2d/core/value-types/CCVec2.js:176
Parameters
Examples
var v = cc.v2(10, 10);
v.subSelf(cc.v2(5, 5));// return Vec2 {x: 5, y: 5};
sub

Subtracts one vector from this, and returns the new result.

meta description
Returns Vec2
Defined in cocos2d/core/value-types/CCVec2.js:193
Parameters
  • vector Vec2
  • out Vec2 optional, the receiving vector
Examples
var v = cc.v2(10, 10);
v.sub(cc.v2(5, 5));      // return Vec2 {x: 5, y: 5};
var v1;
v.sub(cc.v2(5, 5), v1);  // return Vec2 {x: 5, y: 5};
mulSelf

Multiplies this by a number. If you want to save result to another vector, use mul() instead.

meta description
Returns Vec2
Defined in cocos2d/core/value-types/CCVec2.js:213
Parameters
Examples
var v = cc.v2(10, 10);
v.mulSelf(5);// return Vec2 {x: 50, y: 50};
mul

Multiplies by a number, and returns the new result.

meta description
Returns Vec2
Defined in cocos2d/core/value-types/CCVec2.js:230
Parameters
  • num number
  • out Vec2 optional, the receiving vector
Examples
var v = cc.v2(10, 10);
v.mul(5);      // return Vec2 {x: 50, y: 50};
var v1;
v.mul(5, v1);  // return Vec2 {x: 50, y: 50};
scaleSelf

Multiplies two vectors.

meta description
Returns Vec2
Defined in cocos2d/core/value-types/CCVec2.js:250
Parameters
Examples
var v = cc.v2(10, 10);
v.scaleSelf(cc.v2(5, 5));// return Vec2 {x: 50, y: 50};
scale

Multiplies two vectors, and returns the new result.

meta description
Returns Vec2
Defined in cocos2d/core/value-types/CCVec2.js:267
Parameters
  • vector Vec2
  • out Vec2 optional, the receiving vector
Examples
var v = cc.v2(10, 10);
v.scale(cc.v2(5, 5));      // return Vec2 {x: 50, y: 50};
var v1;
v.scale(cc.v2(5, 5), v1);  // return Vec2 {x: 50, y: 50};
divSelf

Divides by a number. If you want to save result to another vector, use div() instead.

meta description
Returns Vec2
Defined in cocos2d/core/value-types/CCVec2.js:287
Parameters
Examples
var v = cc.v2(10, 10);
v.divSelf(5); // return Vec2 {x: 2, y: 2};
div

Divides by a number, and returns the new result.

meta description
Returns Vec2
Defined in cocos2d/core/value-types/CCVec2.js:304
Parameters
  • divisor Number
  • out Vec2 optional, the receiving vector
Examples
var v = cc.v2(10, 10);
v.div(5);      // return Vec2 {x: 2, y: 2};
var v1;
v.div(5, v1);  // return Vec2 {x: 2, y: 2};
negSelf

Negates the components. If you want to save result to another vector, use neg() instead.

meta description
Returns Vec2
Defined in cocos2d/core/value-types/CCVec2.js:324
Examples
var v = cc.v2(10, 10);
v.negSelf(); // return Vec2 {x: -10, y: -10};
neg

Negates the components, and returns the new result.

meta description
Returns Vec2
Defined in cocos2d/core/value-types/CCVec2.js:340
Parameters
  • out Vec2 optional, the receiving vector
Examples
var v = cc.v2(10, 10);
var v1;
v.neg(v1);  // return Vec2 {x: -10, y: -10};
dot

Dot product

meta description
Returns number
Defined in cocos2d/core/value-types/CCVec2.js:358
Parameters
Examples
var v = cc.v2(10, 10);
v.dot(cc.v2(5, 5)); // return 100;
cross

Cross product

meta description
Returns number
Defined in cocos2d/core/value-types/CCVec2.js:372
Parameters
Examples
var v = cc.v2(10, 10);
v.cross(cc.v2(5, 5)); // return 0;
mag

Returns the length of this vector.

meta description
Returns number
Defined in cocos2d/core/value-types/CCVec2.js:386
Examples
var v = cc.v2(10, 10);
v.mag(); // return 14.142135623730951;
magSqr

Returns the squared length of this vector.

meta description
Returns number
Defined in cocos2d/core/value-types/CCVec2.js:399
Examples
var v = cc.v2(10, 10);
v.magSqr(); // return 200;
normalizeSelf

Make the length of this vector to 1.

meta description
Returns Vec2
Defined in cocos2d/core/value-types/CCVec2.js:412
Examples
var v = cc.v2(10, 10);
v.normalizeSelf(); // return Vec2 {x: 0.7071067811865475, y: 0.7071067811865475};
normalize

Returns this vector with a magnitude of 1.

Note that the current vector is unchanged and a new normalized vector is returned. If you want to normalize the current vector, use normalizeSelf function.

meta description
Returns Vec2
Defined in cocos2d/core/value-types/CCVec2.js:439
Parameters
  • out Vec2 optional, the receiving vector
angle

Get angle in radian between this and vector.

meta description
Returns number
Defined in cocos2d/core/value-types/CCVec2.js:462
Parameters
signAngle

Get angle in radian between this and vector with direction.

meta description
Returns number
Defined in cocos2d/core/value-types/CCVec2.js:484
Parameters
rotate

rotate

meta description
Returns Vec2
Defined in cocos2d/core/value-types/CCVec2.js:496
Parameters
  • radians number
  • out Vec2 optional, the receiving vector
rotateSelf

rotate self

meta description
Returns Vec2
Defined in cocos2d/core/value-types/CCVec2.js:511
Parameters

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