Memory-managed wrapper type.

Checks two transforms for equality.

Returns the category this transform belongs to.

Inverts the given transform.

If self is not invertible, NULL is returned. Note that inverting NULL also returns NULL, which is the correct inverse of NULL. If you need to differentiate between those cases, you should check self is not NULL before calling this function.

This function consumes self. Use transformRef first if you want to keep it around.

Multiplies next with the given matrix.

This function consumes next. Use transformRef first if you want to keep it around.

Multiplies next with the matrix [ xx yx x0; xy yy y0; 0 0 1 ].

The result of calling transformTo2d on the returned Transform should match the input passed to this function.

This function consumes next. Use transformRef first if you want to keep it around.

Since: 4.20

Creates a new identity transform.

This function is meant to be used by language bindings. For C code, this is equivalent to using NULL.

Parses a given into a transform.

Strings printed via transformToString can be read in again successfully using this function.

If string does not describe a valid transform, false is returned and NULL is put in outTransform.

Applies a perspective projection transform.

This transform scales points in X and Y based on their Z value, scaling points with positive Z values away from the origin, and those with negative Z values towards the origin. Points on the z=0 plane are unchanged.

This function consumes next. Use transformRef first if you want to keep it around.

Converts the transform into a human-readable representation.

The result of this function can later be parsed with transformParse.

Acquires a reference on the given transform.

Rotates next by an angle around the Z axis.

The rotation happens around the origin point of (0, 0).

This function consumes next. Use transformRef first if you want to keep it around.

Rotates next angle degrees around axis.

For a rotation in 2D space, use transformRotate

This function consumes next. Use transformRef first if you want to keep it around.

Scales next in 2-dimensional space by the given factors.

Use transformScale3d to scale in all 3 dimensions.

This function consumes next. Use transformRef first if you want to keep it around.

Scales next by the given factors.

This function consumes next. Use transformRef first if you want to keep it around.

Applies a skew transform.

This function consumes next. Use transformRef first if you want to keep it around.

Since: 4.6

Converts a transform to a 2D transformation matrix.

self must be a 2D transformation. If you are not sure, use

transformGetCategory >= GSK_TRANSFORM_CATEGORY_2D

to check.

The returned values are a subset of the full 4x4 matrix that is computed by transformToMatrix and have the following layout:

 | xx yx |   |  a  b  0 |
 | xy yy | = |  c  d  0 |
 | dx dy |   | tx ty  1 |

This function can be used to convert between a GskTransform and a matrix type from other 2D drawing libraries, in particular Cairo.

Converts a transform to 2D transformation factors.

To recreate an equivalent transform from the factors returned by this function, use

gsk_transform_skew ( gsk_transform_scale ( gsk_transform_rotate ( gsk_transform_translate (NULL, &GRAPHENE_POINT_INIT (dx, dy)), angle), scale_x, scale_y), skew_x, skew_y)

self must be a 2D transformation. If you are not sure, use

transformGetCategory >= GSK_TRANSFORM_CATEGORY_2D

to check.

Since: 4.6

Converts a transform to 2D affine transformation factors.

To recreate an equivalent transform from the factors returned by this function, use

gsk_transform_scale ( gsk_transform_translate ( NULL, &GRAPHENE_POINT_T (dx, dy)), sx, sy)

self must be a 2D affine transformation. If you are not sure, use

transformGetCategory >= GSK_TRANSFORM_CATEGORY_2D_AFFINE

to check.

Computes the 4x4 matrix for the transform.

The previous value of outMatrix will be ignored.

Converts the transform into a human-readable string.

The resulting string can be parsed with transformParse.

This is a wrapper around transformPrint.

Converts a transform to a translation operation.

self must be a 2D transformation. If you are not sure, use

transformGetCategory >= GSK_TRANSFORM_CATEGORY_2D_TRANSLATE

to check.

Applies all the operations from other to next.

This function consumes next. Use transformRef first if you want to keep it around.

Transforms a rectangle using the given transform.

The result is the bounding box containing the coplanar quad.

Transforms a point using the given transform.

Translates next in 2-dimensional space by point.

This function consumes next. Use transformRef first if you want to keep it around.

Translates next by point.

This function consumes next. Use transformRef first if you want to keep it around.

Releases a reference on the given transform.

If the reference was the last, the resources associated to the self are freed.