Transform

Define a 3x3 transform matrix.

A Transform specifies how to translate, rotate, scale, shear, project, whatever things.

In mathematical terms, it defines how to transform a coordinate system into another.

For example, if you apply a rotation transform to a sprite, the result will be a rotated sprite. And anything that is transformed by this rotation transform will be rotated the same way, according to its initial position.

Transforms are typically used for drawing. But they can also be used for any computation that requires to transform points between the local and global coordinate systems of an entity (like collision detection).

struct Transform {

float[9] m_matrix;

this(float a00, float a01, float a02, float a10, float a11, float a12, float a20, float a21, float a22);

this(float[9] newMatrix);

Transform getInverse();

const(float)[] getMatrix();

void combine(Transform otherTransform);

Vector2f transformPoint(Vector2f point);

FloatRect transformRect(const(FloatRect) rect);

void translate(float x, float y);

void rotate(float angle);

void rotate(float angle, float centerX, float centerY);

void scale(float scaleX, float scaleY);

void scale(float scaleX, float scaleY, float centerX, float centerY);

string toString();

Transform opBinary(Transform rhs);

Transform opOpAssign(Transform rhs);

Transform opBinary(Vector2f vector);

static

const(Transform) Identity;

}

Constructors

this this(float a00, float a01, float a02, float a10, float a11, float a12, float a20, float a21, float a22): Construct a 3x3 matrix.
this this(float[9] newMatrix): Undocumented in source.

Members

Functions

combine void combine(Transform otherTransform): Combine the current transform with another one.
getInverse Transform getInverse(): Return the inverse of the transform.
getMatrix const(float)[] getMatrix(): Return the transform as a 4x4 matrix.
opBinary Transform opBinary(Vector2f vector): Undocumented in source. Be warned that the author may not have intended to support it.
opBinary Transform opBinary(Transform rhs): Undocumented in source. Be warned that the author may not have intended to support it.
opOpAssign Transform opOpAssign(Transform rhs): Undocumented in source. Be warned that the author may not have intended to support it.
rotate void rotate(float angle): Combine the current transform with a rotation.
rotate void rotate(float angle, float centerX, float centerY): Combine the current transform with a rotation.
scale void scale(float scaleX, float scaleY): Combine the current transform with a scaling.
scale void scale(float scaleX, float scaleY, float centerX, float centerY): Combine the current transform with a scaling.
toString string toString(): Undocumented in source. Be warned that the author may not have intended to support it.
transformPoint Vector2f transformPoint(Vector2f point): Transform a 2D point.
transformRect FloatRect transformRect(const(FloatRect) rect): Transform a rectangle.
translate void translate(float x, float y): Combine the current transform with a translation.

Static variables

Identity const(Transform) Identity;: Indentity transform (does nothing).

Variables

m_matrix float[9] m_matrix;: Undocumented in source.

Transform

Constructors

Members

Functions

Static variables

Variables

See Also

Meta

Source

Authors