CoordinateTransformer class
坐标变换工具类 提供图片坐标系和屏幕坐标系之间的转换功能
Constructors
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Static Methods
-
createImageToScreenMatrix(
{required Size canvasSize, required double rotationAngle, required double scale, required Image image}) → Matrix4 - 计算从图片坐标系到屏幕坐标系的变换矩阵
-
createScreenToImageMatrix(
{required Size canvasSize, required double rotationAngle, required double scale, required Image image}) → Matrix4 - 计算从屏幕坐标系到图片坐标系的变换矩阵（逆变换）
-
getImageDisplayBounds(
{required Size canvasSize, required double rotationAngle, required double scale, required Image image}) → Rect - 计算旋转后图片在屏幕上的实际显示边界框
-
imageToScreen(
{required Offset imagePoint, required Size canvasSize, required double rotationAngle, required double scale, required Image image}) → Offset - 将图片坐标转换为屏幕坐标
-
isPointInsideRotatedImage(
{required Offset screenPoint, required Size canvasSize, required double rotationAngle, required double scale, required Image image}) → bool - 检查一个点是否在旋转后的图片内
-
screenToImage(
{required Offset screenPoint, required Size canvasSize, required double rotationAngle, required double scale, required Image image}) → Offset - 将屏幕坐标转换为图片坐标