vector3d QML Value Type
a value with x, y, and z attributes. More...
Detailed Description
The vector3d
type refers to a value with x
, y
, and z
attributes.
Properties of type vector3d
have a zero vector by default. This has x
, y
and z
set to 0
.
To create a vector3d
value, specify it as a "x,y,z" string:
Rotation { angle: 60; axis: "0,1,0" }
or with the Qt.vector3d() function:
Rotation { angle: 60; axis: Qt.vector3d(0, 1, 0) }
or as separate x
, y
, and z
components:
Rotation { angle: 60; axis.x: 0; axis.y: 1; axis.z: 0 }
Each attribute of a vector3d value is stored internally as a single-precision floating point number (float
).
When integrating with C++, note that any QVector3D value passed into QML from C++ is automatically converted into a vector3d
value, and vice-versa.
The vector3d type has the following idempotent functions which can be invoked in QML:
Function Signature | Description | Example |
---|---|---|
vector3d crossProduct(vector3d other) | Returns the vector3d result of the cross product of this vector3d with the other vector3d | |
real dotProduct(vector3d other) | Returns the scalar real result of the dot product of this vector3d with the other vector3d | |
vector3d times(matrix4x4 matrix) | Returns the vector3d result of transforming this vector3d with the 4x4 matrix with the matrix applied post-vector | |
vector3d times(vector3d other) | Returns the vector3d result of multiplying this vector3d with the other vector3d | |
vector3d times(real factor) | Returns the vector3d result of multiplying this vector3d with the scalar factor | var a = Qt.vector3d(1,2,3); var b = 4.48; var c = a.times(b); console.log(c.toString()); // QVector3D(4.48, 8.96, 13.44) |
vector3d plus(vector3d other) | Returns the vector3d result of the addition of this vector3d with the other vector3d | |
vector3d minus(vector3d other) | Returns the vector3d result of the subtraction of other vector3d from this vector3d | |
vector3d normalized() | Returns the normalized form of this vector | var a = Qt.vector3d(1,2,3); var b = a.normalized(); console.log(b.toString()); // QVector3D(0.267261, 0.534522, 0.801784) |
real length() | Returns the scalar real value of the length of this vector3d | var a = Qt.vector3d(1,2,3); var b = a.length(); console.log(b.toString()); // 3.7416573867739413 |
vector2d toVector2d() | Returns the vector2d result of converting this vector3d to a vector2d | var a = Qt.vector3d(1,2,3); var b = a.toVector2d(); console.log(b.toString()); // QVector2D(1, 2) |
vector4d toVector4d() | Returns the vector4d result of converting this vector3d to a vector4d | var a = Qt.vector3d(1,2,3); var b = a.toVector4d(); console.log(b.toString()); // QVector4D(1, 2, 3, 0) |
bool fuzzyEquals(vector3d other, real epsilon) | Returns true if this vector3d is approximately equal to the other vector3d. The approximation will be true if each attribute of this is within epsilon of other . Note that epsilon is an optional argument, the default epsilon is 0.00001. |
This value type is provided by the QtQuick import.
See also QML Value Types.
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