intersection

Here is the graph I currently have : The Dotted Blue line represented the y value that corresponds to the x value I am looking for. I am trying to find the x values of the line's intersections with the blue curve(Upper).Since the interesections do not fall on a point that has already been defined, we need to interpolate a point that falls onto the Upper plot. Here is the information I have: LineValue - The y value of the intersection and the value of the dotted line( y = LineValue) Frequency - an array containing the x value coordinates seen on this plot. The interpolated values of Frequency

Imagine I have the coordinate of 4 points that form a polygon. These points are represented using PointF in C#. If I have 2 polygons (using 8 points), how can I tell if they intersect? Rectangle class has a method called IntersectsWith but I couldn't find something similar for GraphicsPath or Region. Any advice would be greatly appreciated. Mosh Patrick Klug As Charlie already pointed out you can use the Separating Axis theorem. Check out this article for a C# implementation and example of polygon collision detection. I have also answered this question here which deals with 2D collision in C#.

i think this question has been asked before but i havent been able to deduce a clear answer. I am trying to find the best way (or a way) to intersect two completely different ienumerable collections. class A: int z1 int z2 int z3 string z4 class B: int j5 int j6 T j7 T j8 string j9 ..I want to intersect List<A> with List<B> on z2 == j6 . can this be done? The question doesn't really make sense - what would the result type be? Intersections have to be performed on two sequences of the same type. It sounds like you don't so much want an intersection between two sets, as a filter of the first

I'd like to ask you if there are any algorithms how to minimize edge crossings in graph, for example if I have a transition matrix of the graph. I found methods like trying to place the nodes around the other node, but I'd like to know some other ideas. Thanks. There's a range of well established algorithms/libraries that have been developed for graph drawing applications, you can get a bit of background here . To draw undirected graphs a popular choice is the force-based layout algorithm, in which graph edges are treated as springs (attractive forces) while the vertices are treated like

I have two arrays . Array1 contains 15 objects and Array2 contains 4 objects. There are 2 common objects from both array, I just want to get that resulted array of that 2 objects. It should be like intersection of two Set, but how to do in Objective C for array..? Please help. thanks. Using NSMutableSet NSMutableSet *set1 = [NSMutableSet setWithArray: array1]; NSSet *set2 = [NSSet setWithArray: array2]; [set1 intersectSet: set2]; NSArray *resultArray = [set1 allObjects]; 来源： https://stackoverflow.com/questions/12173903/how-to-intersect-two-arrays-in-objective-c