nsbezierpath

UIBezierPath draw rectangle and arcs together

由 家住魔仙堡 提交于 2019-12-11 11:47:17
问题 I want to draw one path like this: and this is what I wrote : CGFloat radius = 50; UIBezierPath *path = [UIBezierPath bezierPath]; [path moveToPoint:CGPointMake(radius, CGRectGetMinY(rect))]; [path addLineToPoint:CGPointMake(CGRectGetMaxX(rect) - radius, CGRectGetMinY(rect))]; [path addLineToPoint:CGPointMake(CGRectGetMaxX(rect) -radius, CGRectGetMaxY(rect))]; [path addLineToPoint:CGPointMake(radius, CGRectGetMaxY(rect))]; [path closePath]; UIBezierPath *path1 = [UIBezierPath

Using NSBezierPath addClip - How to invert clip

由 别等时光非礼了梦想. 提交于 2019-12-11 04:24:36
问题 Using NSBezierPath addClip only limits drawing to inside the path used for clipping. I'd like to do the opposite - Only draw outside. - (void)drawRect:(NSRect)dirtyRect { NSBezierPath *dontDrawInThis = ...; //We want an opposite mask of [dontDrawInThis setClip]; //Drawing comes here } 回答1: This was my solution: - (void)drawRect:(NSRect)dirtyRect { NSBezierPath *dontDrawInThis = ...; // The mask is the whole bounds rect, subtracted dontDrawInThis NSBezierPath *clip = [NSBezierPath

Making a ball/circle move in cocoa using nsbezierpath(objective -c))?

由 ╄→尐↘猪︶ㄣ 提交于 2019-12-11 03:46:15
问题 I am trying to Create a point on an image when the application runs and then try to move the point slowly to a different location. here is my code.This code works but there are two problems. First, The processing has already happened before the window loads so I see only the finished result.(I want to show one point moving to another point in the image) Second,The previous point is not removed when I create a new point.So it doesn't look like the point is moving rather it looks like it is

Create NSBezierPath from bitmap outline

由 核能气质少年 提交于 2019-12-07 06:05:48
问题 I would like to create a NSBezierPath object which corresponds to the outline of an arbitrary bitmap image. All my images are png solid monochrome shapes with transparent backgrounds. Here is an examplee: I want the bezier path of the outline of the shape. What is the bast way to achieve this? 回答1: What you are looking for is a tracing/vectorization algorithm . DrawKit appears to support bitmap to vector tracing: DKImageShape+Vectorization.m NSImage+Tracing.m Some other (non-ObjC) open-source

How to use NSPointArray?

由 孤者浪人 提交于 2019-12-07 05:34:52
问题 So I want to use the method appendBezierPathWithPoints:count: in NSBezierPath. But the method requires me to use NSPointArray. The documentary doesn't really talk much about it and all I could get about it is that it's an array of NSPoints and I'm not sure how to do it. I think that it uses the c array mechanism, but I'm not sure. Thanks. 回答1: Yes, you need a C-style array of points to pass to appendBezierPathWithPoints:count: . For example you might do something like this: NSPoint pointArray

How to get the path Quartz is using to stroke a NSBezierPath

由 百般思念 提交于 2019-12-06 08:12:43
问题 I'm using this code to stroke a NSBezierPath with a wide, dashed, black line. ( c and strForBezier are defined somewhere else) NSGlyph glyph; for(n = 0; n < len; n++) { glyph = [font glyphWithName: [strForBezier substringWithRange:NSMakeRange(n, 1)]]; [path appendBezierPathWithGlyph: glyph inFont: font]; } CGFloat pattern2[4]; pattern2[0]=5*c; pattern2[1]=2*c; pattern2[2]=2*c; pattern2[3]=2*c; [path setLineDash:pattern2 count:4 phase:0]; [path setLineWidth:c]; [path stroke]; [[NSColor

Is there an iOS equivalent of appendBezierPathWithArcWithCenter

由 ￣綄美尐妖づ 提交于 2019-12-05 12:10:35
I'm trying to draw a quarter circle in iOS. In Mac OS, it seems you can use appendBezierPathWithArcWithCenter but this doesn't seem to work in iOS. Does anyone know how to simply draw a quarter circle in iOS? Thanks There are two iOS equivalents, one for UIBezierPath and one for CGPath : UIBezierPath equivalent UIBezierPath *path = [UIBezierPath bezierPath]; [path addArcWithCenter:centerPoint radius:radius startAngle:startAngle endAngle:endAngle clockwise:YES]; CGPath equivalent CGMutablePathRef path = CGPathCreateMutable(); CGPathAddArc(path, NULL, centerPoint.x, centerPoint.y, radius,

How to use NSPointArray?

由 非 Y 不嫁゛ 提交于 2019-12-05 10:51:16
So I want to use the method appendBezierPathWithPoints:count: in NSBezierPath. But the method requires me to use NSPointArray. The documentary doesn't really talk much about it and all I could get about it is that it's an array of NSPoints and I'm not sure how to do it. I think that it uses the c array mechanism, but I'm not sure. Thanks. Yes, you need a C-style array of points to pass to appendBezierPathWithPoints:count: . For example you might do something like this: NSPoint pointArray[3]; pointArray[0] = NSMakePoint(0, 0); pointArray[1] = NSMakePoint(0.5, 0.25); pointArray[2] = NSMakePoint

Is there a way to get the x,y co-ordinates of all points of a NSBezierPath object?

由 雨燕双飞 提交于 2019-12-05 01:54:11
问题 If I have an NSBezierPath object, is there a way to get coordinates(x,y) of all the points drawn? I want to move an NSRect along the path. 回答1: An NSBezierPath doesn't define exactly which points it draws in, but it does contain the points needed to define its pieces. You can use the elementAtIndex:associatedPoints: method to get the points for each vector element in the path. To get each point in the path you would have to iterate over all of the elements and get the associated points. For

How to get the path Quartz is using to stroke a NSBezierPath

由 主宰稳场 提交于 2019-12-04 12:41:28
I'm using this code to stroke a NSBezierPath with a wide, dashed, black line. ( c and strForBezier are defined somewhere else) NSGlyph glyph; for(n = 0; n < len; n++) { glyph = [font glyphWithName: [strForBezier substringWithRange:NSMakeRange(n, 1)]]; [path appendBezierPathWithGlyph: glyph inFont: font]; } CGFloat pattern2[4]; pattern2[0]=5*c; pattern2[1]=2*c; pattern2[2]=2*c; pattern2[3]=2*c; [path setLineDash:pattern2 count:4 phase:0]; [path setLineWidth:c]; [path stroke]; [[NSColor blueColor] set ]; [path fill]; How can I get the black NSBezierPath ? I'm making the assumption that a
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