如何在ios中使用CGMutablePathRef绘制Hexagon？

我想绘制一个六angular形，这是我的代码

int mgX = penThickness * 6; int mgY = penThickness * 2; CGPoint st = CGPointMake(MIN(startingPt.x, endingPt.x), MIN(startingPt.y, endingPt.y)); CGPoint et = CGPointMake(MAX(startingPt.x, endingPt.x), MAX(startingPt.y, endingPt.y)); CGRect outsideRect = CGRectMake(st.x,st.y, MAX(mgX, et.x-st.x), MAX(mgY, et.y-st.y)); CGRect insideRect = CGRectInset(outsideRect, outsideRect.size.width * 0.40f, outsideRect.size.height * 0.30f); CGPathMoveToPoint(pathRef, nil, CGRectGetMinX(outsideRect), CGRectGetMinY(outsideRect)); //0 CGPathAddLineToPoint(pathRef, nil, CGRectGetMaxX(insideRect), CGRectGetMinY(outsideRect)); //1 CGPathAddLineToPoint(pathRef, nil, CGRectGetMaxX(outsideRect), CGRectGetMidY(insideRect)); //2 CGPathAddLineToPoint(pathRef, nil, CGRectGetMaxX(insideRect), CGRectGetMaxY(outsideRect)); //3 CGPathAddLineToPoint(pathRef, nil, CGRectGetMinX(outsideRect), CGRectGetMaxY(outsideRect)); //las line CGPathAddLineToPoint(pathRef, nil, CGRectGetMidX(outsideRect), CGRectGetMidY(outsideRect)); 

有人请帮助我。

Answer 1

我已经完成Draw Hextone在Hexagone这个代码工作画哈克斯康

  int mgX = penThickness * 6; int mgY = penThickness * 6; CGPoint st = CGPointMake(MIN(startingPt.x, endingPt.x), MIN(startingPt.y, endingPt.y)); CGPoint et = CGPointMake(MAX(startingPt.x, endingPt.x), MAX(startingPt.y, endingPt.y)); CGRect outsideRect = CGRectMake(st.x,st.y, MAX(mgX, et.x-st.x), MAX(mgY, et.y-st.y)); CGRect insideRect = CGRectInset(outsideRect, outsideRect.size.width * 0.30f, outsideRect.size.height * 0.30f); CGPathMoveToPoint(pathRef, nil, CGRectGetMinX(insideRect), CGRectGetMinY(outsideRect)); //0 line CGPathAddLineToPoint(pathRef, nil, CGRectGetMaxX(insideRect), CGRectGetMinY(outsideRect)); //1 line CGPathAddLineToPoint(pathRef, nil, CGRectGetMaxX(outsideRect), CGRectGetMidY(insideRect)); //2 line CGPathAddLineToPoint(pathRef, nil, CGRectGetMaxX(insideRect), CGRectGetMaxY(outsideRect)); //3 line CGPathAddLineToPoint(pathRef, nil, CGRectGetMinX(insideRect), CGRectGetMaxY(outsideRect)); //4 line CGPathAddLineToPoint(pathRef, nil, CGRectGetMinX(outsideRect), CGRectGetMidY(insideRect)); CGPathCloseSubpath(pathRef); 

Answer 2

以下链接解释了如何使用CGMutablePathRef绘制六边形：

移动CGPathCreateMutable（），使path保持不变？

Answer 3

 - (CGPathRef)roundedPolygonPathWithRect:(CGRect)rect lineWidth:(CGFloat)lineWidth sides:(NSInteger)sides cornerRadius:(CGFloat)cornerRadius { /* //Center your poligon, depends from reference system rect = CGRectMake(rect.origin.x - (rect.size.width - lineWidth)/2.0, rect.origin.y - (rect.size.height - lineWidth)/2.0, rect.size.width, rect.size.height); */ CGMutablePathRef pathRef = CGPathCreateMutable(); CGFloat theta = 2.0 * M_PI / sides; // how much to turn at every corner //CGFloat offset = cornerRadius * tanf(theta / 2.0); // offset from which to start rounding corners CGFloat width = MIN(rect.size.width, rect.size.height); // width of the square // Calculate Center CGPoint center = CGPointMake(rect.origin.x + width / 2.0, rect.origin.y + width / 2.0); CGFloat radius = (width - lineWidth + cornerRadius - (cos(theta) * cornerRadius)) / 2.0; // Start drawing at a point, which by default is at the right hand edge // but can be offset CGFloat angle = M_PI / 2; CGPoint corner = CGPointMake(center.x + (radius - cornerRadius) * cos(angle), center.y + (radius - cornerRadius) * sin(angle)); CGPathMoveToPoint(pathRef, nil, corner.x + cornerRadius * cos(angle + theta), corner.y + cornerRadius * sin(angle + theta)); // draw the sides and rounded corners of the polygon for (NSInteger side = 0; side < sides; side++) { angle += theta; CGPoint corner = CGPointMake(center.x + (radius - cornerRadius) * cos(angle), center.y + (radius - cornerRadius) * sin(angle)); CGPoint tip = CGPointMake(center.x + radius * cos(angle), center.y + radius * sin(angle)); CGPoint start = CGPointMake(corner.x + cornerRadius * cos(angle - theta), corner.y + cornerRadius * sin(angle - theta)); CGPoint end = CGPointMake(corner.x + cornerRadius * cos(angle + theta), corner.y + cornerRadius * sin(angle + theta)); //[path addLineToPoint:start]; CGPathAddLineToPoint(pathRef, nil, start.x, start.y); //[path addQuadCurveToPoint:end controlPoint:tip]; CGPathAddQuadCurveToPoint(pathRef, nil, tip.x, tip.y, end.x, end.y); } CGPathCloseSubpath(pathRef); return pathRef; 

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