Xueersi Online School Tech Team
Apr 15, 2022 · Frontend Development
Implementation and Optimization of Lasso Transformations in HTML Canvas for Web‑Based Whiteboard
This article explains the design, mathematical foundation, and performance‑oriented optimization of a lasso tool that enables batch selection, rotation, scaling, and translation of graphics on an HTML Canvas‑based online whiteboard, including matrix‑based transformation, state recording, undo/redo, and experimental results.
HTML CanvasLasso ToolPerformance optimization
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