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Openai/694f5245-1110-800b-b182-7c2accd50046
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==== 等角視角通常會做: ==== '' screenX = (x - y) '' tileW/2 '' screenY = (x + y) '' tileH/2 如果你沒有把原點平移到畫面中心,就會一半 tile 變成負的 screenX,被畫布裁掉。 ✅ 止血修法(先把 origin 移到房間中心): 在 draw 開頭做一次 translate: <syntaxhighlight lang="js">ctx.save(); ctx.translate(canvas.width/2, canvas.height/4); // 先用這個粗略值 // draw tiles... ctx.restore(); </syntaxhighlight> (之後再精算 camera/offset)
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