Coordinate Transformation
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Convert the given browser coordinates to drawing coordinates on the canvas
getCanvasByClient(point: Point): Point;
Parameter | Type | Description |
|---|---|---|
point | [number, number] | [number, number, number] | Float32Array | 浏览器坐标 |
Returns:
Type: [number, number] | [number, number, number] | Float32Array
Description: 画布上的绘制坐标
Convert the given viewport DOM coordinates to the drawing coordinates on the canvas
getCanvasByViewport(point: Point): Point;
Parameter | Type | Description |
|---|---|---|
point | [number, number] | [number, number, number] | Float32Array | 视窗坐标 |
Returns:
Type: [number, number] | [number, number, number] | Float32Array
Description: 画布上的绘制坐标
Convert the given drawing coordinates on the canvas to browser coordinates
getClientByCanvas(point: Point): Point;
Parameter | Type | Description |
|---|---|---|
point | [number, number] | [number, number, number] | Float32Array | 画布坐标 |
Returns:
Type: [number, number] | [number, number, number] | Float32Array
Description: 浏览器坐标
Convert the given drawing coordinates on the canvas to the coordinates of the viewport DOM
getViewportByCanvas(point: Point): Point;
Parameter | Type | Description |
|---|---|---|
point | [number, number] | [number, number, number] | Float32Array | 画布坐标 |
Returns:
Type: [number, number] | [number, number, number] | Float32Array
Description: 视窗 DOM 的坐标