croppy
library
Functions
aabbCropShapeFn (PathBuilder builder , Size size → CropShape
A function that provides a rectangular crop path for a given size.
absoluteError (dynamic calculated , dynamic correct → double
Returns absolute error between calculated and correct.
The type of calculated and correct must match and can
be any vector, matrix, or quaternion.
buildPlaneVectors (Vector3 planeNormal , Vector3 u , Vector3 v → void
Sets u and v to be two vectors orthogonal to each other and
planeNormal.
catmullRom (double edge0 , double edge1 , double edge2 , double edge3 , double amount → double
Do a catmull rom spline interpolation with edge0, edge1, edge2 and
edge3 by amount.
clampAngle (double angleRad → double
Clamps an angle to the range of 0 to 2pi
cropImage (Image image , CroppableImageData data → Future <CropImageResult
Crops an ui.Image using the CroppableImageData and returns the cropped
image as a CropImageResult .
cross2 (Vector2 x , Vector2 y → double
2D cross product. vec2 x vec2.
cross2A (double x , Vector2 y , Vector2 out → void
2D cross product. double x vec2.
cross2B (Vector2 x , double y , Vector2 out → void
2D cross product. vec2 x double.
cross3 (Vector3 x , Vector3 y , Vector3 out → void
3D Cross product.
degrees (double radians → double
Convert radians to degrees.
dot2 (Vector2 x , Vector2 y → double
2D dot product.
dot3 (Vector3 x , Vector3 y → double
3D dot product.
ellipseCropShapeFn (PathBuilder builder , Size size → CropShape
A function that provides an elliptical crop path for a given size.
generateMaterialImageCropperTheme (BuildContext context → ThemeData
lerpMatrix4 (Matrix4 ?a , Matrix4 ?b , double t → Matrix4
Linearly interpolates between two Matrix4 s using Matrix4Tween .
lookupCroppyLocalizations (Locale locale → CroppyLocalizations
makeFrustumMatrix (double left , double right , double bottom , double top , double near , double far → Matrix4
Constructs a new OpenGL perspective projection matrix.
makeInfiniteMatrix (double fovYRadians , double aspectRatio , double zNear → Matrix4
Constructs a new OpenGL infinite projection matrix.
makeOrthographicMatrix (double left , double right , double bottom , double top , double near , double far → Matrix4
Constructs a new OpenGL orthographic projection matrix.
makePerspectiveMatrix (double fovYRadians , double aspectRatio , double zNear , double zFar → Matrix4
Constructs a new OpenGL perspective projection matrix.
makePlaneProjection (Vector3 planeNormal , Vector3 planePoint → Matrix4
Returns a transformation matrix that transforms points onto
the plane specified with planeNormal and planePoint.
makePlaneReflection (Vector3 planeNormal , Vector3 planePoint → Matrix4
Returns a transformation matrix that transforms points by reflecting
them through the plane specified with planeNormal and planePoint.
makeViewMatrix (Vector3 cameraPosition , Vector3 cameraFocusPosition , Vector3 upDirection → Matrix4
Constructs a new OpenGL view matrix.
matrix3Adj (Matrix3 m → Matrix3
Computes an adjugate matrix.
mix (double min , double max , double a → double
Interpolate between min and max with the amount of a using a linear
interpolation. The computation is equivalent to the GLSL function mix.
obtainImage (ImageProvider <Object provider → Future <Image
Obtains an ui.Image from an ImageProvider .
pickRay (Matrix4 cameraMatrix , num viewportX , num viewportWidth , num viewportY , num viewportHeight , num pickX , num pickY , Vector3 rayNear , Vector3 rayFar → bool
On success, rayNear and rayFar are the points where
the screen space pickX, pickY intersect with the near and far
planes respectively.
polygonFromPath (Path path → Polygon2
radians (double degrees → double
Convert degrees to radians.
relativeError (dynamic calculated , dynamic correct → double
Returns relative error between calculated and correct.
The type of calculated and correct must match and can
be any vector, matrix, or quaternion.
resizeCropRectWithAspectRatio (Rect cropRect , CropAspectRatio ?newAspectRatio → Rect
Resizes a given cropRect to match the given newAspectRatio.
setFrustumMatrix (Matrix4 perspectiveMatrix , double left , double right , double bottom , double top , double near , double far → void
Constructs an OpenGL perspective projection matrix in perspectiveMatrix.
setInfiniteMatrix (Matrix4 infiniteMatrix , double fovYRadians , double aspectRatio , double zNear → void
Constructs an OpenGL infinite projection matrix in infiniteMatrix.
fovYRadians specifies the field of view angle, in radians, in the y
direction.
aspectRatio specifies the aspect ratio that determines the field of view
in the x direction. The aspect ratio of x (width) to y (height).
zNear specifies the distance from the viewer to the near plane
(always positive).
setModelMatrix (Matrix4 modelMatrix , Vector3 forwardDirection , Vector3 upDirection , double tx , double ty , double tz → void
Constructs an OpenGL model matrix in modelMatrix.
Model transformation is the inverse of the view transformation.
Model transformation is also known as "camera" transformation.
Model matrix is commonly used to compute a object location/orientation into
the full model-view stack.
setOrthographicMatrix (Matrix4 orthographicMatrix , double left , double right , double bottom , double top , double near , double far → void
Constructs an OpenGL orthographic projection matrix in orthographicMatrix.
setPerspectiveMatrix (Matrix4 perspectiveMatrix , double fovYRadians , double aspectRatio , double zNear , double zFar → void
Constructs an OpenGL perspective projection matrix in perspectiveMatrix.
setRotationMatrix (Matrix4 rotationMatrix , Vector3 forwardDirection , Vector3 upDirection → void
Constructs a rotation matrix in rotationMatrix.
setViewMatrix (Matrix4 viewMatrix , Vector3 cameraPosition , Vector3 cameraFocusPosition , Vector3 upDirection → void
Constructs an OpenGL view matrix in viewMatrix.
View transformation is the inverse of the model transformation.
View matrix is commonly used to compute the camera location/orientation into
the full model-view stack.
showCupertinoImageCropper (BuildContext context , {required ImageProvider <Object imageProvider , CroppableImageData ?initialData , CroppableImagePostProcessFn ?postProcessFn , CropShapeFn ?cropPathFn , List <CropAspectRatio ? ?allowedAspectRatios , List <Transformation ?enabledTransformations , Object ?heroTag , bool shouldPopAfterCrop = true , Locale ?locale → Future <CropImageResult ?
Shows a CupertinoImageCropperPage and returns the cropped image.
showMaterialImageCropper (BuildContext context , {required ImageProvider <Object imageProvider , CroppableImageData ?initialData , CroppableImagePostProcessFn ?postProcessFn , CropShapeFn ?cropPathFn , List <CropAspectRatio ? ?allowedAspectRatios , List <Transformation ?enabledTransformations , Object ?heroTag , bool shouldPopAfterCrop = true , Locale ?locale → Future <CropImageResult ?
Shows a CupertinoImageCropperPage and returns the cropped image.
smoothStep (double edge0 , double edge1 , double amount → double
Do a smooth step (hermite interpolation) interpolation with edge0 and
edge1 by amount. The computation is equivalent to the GLSL function
smoothstep.
starCropShapeFn (PathBuilder builder , Size size → CropShape
A function that provides a star crop path for a given size.
unproject (Matrix4 cameraMatrix , num viewportX , num viewportWidth , num viewportY , num viewportHeight , num pickX , num pickY , num pickZ , Vector3 pickWorld → bool
On success, Sets pickWorld to be the world space position of
the screen space pickX, pickY, and pickZ.
