SkIPoint Reference

IPoint

Struct SkIPoint

Typedef

SkIPoint typedef define a data type.

SkIPoint holds two 32-bit integer coordinates.

Overview

Related Function

SkIPoint global, struct, and class related member functions share a topic.

Member Function

SkIPoint member functions read and modify the structure properties.

Member

Members

SkIPoint members may be read and written directly without using a member function.

Members

Constructor

SkIPoint can be constructed or initialized by these functions, including C++ class constructors.

Make

Sets fX to x, fY to y.

Parameters

Return Value

IPoint (x, y)

Example

Example Output

pt1 == pt2

See Also

set SkPoint::iset()[2] SkPoint::Make

Property

x

Returns x-axis value of IPoint.

Return Value

fX

Example

Example Output

pt1.fX == pt1.x()

See Also

y SkPoint::x()

y

Returns y-axis value of IPoint.

Return Value

fY

Example

Example Output

pt1.fY == pt1.y()

See Also

x SkPoint::y()

isZero

Returns true if fX and fY are both zero.

Return Value

true if fX is zero and fY is zero

Example

Example Output

pt.isZero() == true

See Also

SkPoint::isZero

Set

set

Sets fX to x and fY to y.

Parameters

Example

Example Output

pt1 == pt2

See Also

Make

Operator

SkIPoint operators inline class member functions with arithmetic equivalents.

operator-

Returns IPoint changing the signs of fX and fY.

Return Value

IPoint as (-fX, -fY)

Example

Example Output

pt: 0, 0  negate: 0, 0
pt: -1, -2  negate: 1, 2
pt: 2147483647, -2147483647  negate: -2147483647, 2147483647
pt: -2147483648, -2147483648  negate: -2147483648, -2147483648

See Also

operator-(const SkIPoint& a, const SkIPoint& b) operator-=(const SkIVector& v) SkPoint::operator-() const

operator+=

Offsets IPoint by IVector v. Sets IPoint to (fX + v.fX, fY + v.fY).

Parameters

Example

See Also

operator+(const SkIPoint& a, const SkIVector& b) SkPoint::operator+=(const SkVector& v)

operator-=

Subtracts IVector v from IPoint. Sets IPoint to: (fX - v.fX, fY - v.fY).

Parameters

Example

See Also

operator-(const SkIPoint& a, const SkIPoint& b) SkPoint::operator-=(const SkVector& v)

equals

Returns true if IPoint is equivalent to IPoint constructed from (x, y).

Parameters

Return Value

true if IPoint equals (x, y)

Example

Example Output

pt: 0, 0  == pt
pt: -1, -2  == pt
pt: 2147483647, -1  == pt
pt: -2147483648, -1  == pt

See Also

operator==(const SkIPoint& a, const SkIPoint& b)

operator==

Returns true if a is equivalent to b.

Parameters

Return Value

true if a.fX == b.fX and a.fY == b.fY

Example

Example Output

pt: 0, 0  == pt
pt: -1, -2  == pt
pt: 2147483647, -1  == pt
pt: -2147483648, -1  == pt

See Also

equals operator!=(const SkIPoint& a, const SkIPoint& b)

operator!=

Returns true if a is not equivalent to b.

Parameters

Return Value

true if a.fX != b.fX or a.fY != b.fY

Example

Example Output

pt: 0, 0  == pt
pt: -1, -2  == pt
pt: 2147483647, -1  == pt
pt: -2147483648, -1  == pt

See Also

operator==(const SkIPoint& a, const SkIPoint& b) equals

operator-

Returns IVector from b to a; computed as (a.fX - b.fX, a.fY - b.fY).

Can also be used to subtract IVector from IVector, returning IVector.

Parameters

Return Value

IVector from b to a

Example

See Also

operator-=(const SkIVector& v)

operator+

Returns IPoint resulting from IPoint a offset by IVector b, computed as: (a.fX + b.fX, a.fY + b.fY).

Can also be used to offset IPoint b by IVector a, returning IPoint. Can also be used to add IVector to IVector, returning IVector.

Parameters

Return Value

IPoint equal to a offset by b

Example

See Also

operator+=(const SkIVector& v)

IVector

Typedef SkIVector

SkIVector provides an alternative name for SkIPoint. SkIVector and SkIPoint can be used interchangeably for all purposes.