_drawPolygon _xf beginPaint beginShape calcPenColor calcPenWidth copy drawArc drawArc3P drawArrayHead drawBeeline drawBeziers drawBeziers drawBSplines drawCircle drawEllipse drawEllipse drawHandle drawHermiteSplines drawLine drawLines drawPath drawPath_ drawPathWithArrayHead drawPie drawPolygon drawQuadSplines drawRayline drawRect drawRoundRect drawTextAt drawTextAt endPaint endShape fromHandle getBkColor getCanvas getClipBox getClipModel getClipWorld GiGraphics GiGraphics GiGraphics isDrawing isGrayMode isPrint isStopping m_impl operator= rawBeginPath rawBeziers rawBezierTo rawClosePath rawEllipse rawEndPath rawImage rawLine rawLines rawLineTo rawMoveTo rawPolygon rawQuadTo rawRect rawText setBkColor setBrush setClipBox setClipWorld setGrayMode setMaxPenWidth setPen setPenWidthFactor setPhaseEnabled stopDrawing toHandle xf ~GiGraphics

drawQuadSplines() bool GiGraphics::drawQuadSplines ( const GiContext *  ctx, int  count, const Point2d *  ctlpts, bool  closed = false, bool  modelUnit = true  ) 绘制二次B样条曲线，模型坐标或世界坐标 参数 ctx 绘图参数，忽略填充参数，为NULL时取为上一个绘图参数 count 控制点的点数，至少为3 ctlpts 控制点坐标数组，点数为count closed 是否闭合 modelUnit 指定的坐标尺寸是模型坐标(true)还是世界坐标(false) 返回 是否显示成功。失败原因为参数错误或超出剪裁区域 参见 drawBeziers 函数调用图: