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F= Xi Ye+ XeYi F=XeYi-Xi Ye F= XiYi +XeYe F= Ye- Y i
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斜线终点坐标(Xe,Ye),当︱Ye︱>︱Xe︱时,计数方向取GY 斜线终点坐标(Xe,Ye),当︱Xe︱>︱Ye︱时,计数方向取GY 圆弧终点坐标(Xe,Ye),当︱Xe︱>︱Ye︱时,计数方向取GY 圆弧终点坐标(Xe,Ye),当︱Xe︱<︱Ye︱时,计数方向取GY
cosy+2yex+2xln2,xsiny-ex cosy-2yex-2xln2,xsiny+2ex cosy-2yex+2xln2,xsiny-2ex siny-2yex+2xln2,xcosy-2ex
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must have prepared couldn’t have prepared must prepare could prepare