angle

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 6 years ago . I want to get angle between 3 points in JavaScript. If I have points A(x1,y1), B(x2, y2), C(x3, y3) I want to get angle that is formed with lines AB and BC. let A = {x:x1, y:y1}, B = {x:x2, y:y2}, C = {x:x3, y:y3} 回答1: Try this function : /* * Calculates the angle ABC (in radians) * * A first point, ex: {x: 0, y

问题 I am trying to get ANGLE working in C# using P/Invoke. Basically, I am creating a simple 2D surface, and then passing that off to skia (using SkiaSharp). Everything is working and all that, but I am having a problem marshalling PropertySet to the unmanaged code. This bit works fine: // the properties var props = new PropertySet(); props.Add("EGLNativeWindowTypeProperty", swapChainPanel); // the surface attributes int[] surfaceAttrs = { EGL_ANGLE_SURFACE_RENDER_TO_BACK_BUFFER, EGL_TRUE, EGL

问题 From the functions for MinAreaRect, does it return angles in the range of 0-360 degrees? I am unsure as i have an object that is oriented at 90 degrees or so but I keep getting either -1 or -15 degrees. Could this be an openCV error? Any guidance much appreciated. Thanks 回答1: I'm going to assume you're using C++, but the answer should be the same if you're using C or Python. The function minAreaRect seems to give angles ranging from -90 to 0 degrees, not including zero, so an interval of [-90

问题 I'm using a Reach RS+ device to capture GPS position data as well as IMU data (roll, pitch and yaw); see the "Point Collection" image on the manufacturer's website. I'm trying to determine the GPS coordinates of the bottom point (the empty end of the rod that the receiver is fixed on). To be able to make calculations in meters I'm converting longitude ( X ) and latitude ( Y ) to UTM while keeping altitude ( Z ) unaltered. When the rod is upright, X and Y stay the same while Z1 = Z - ROD

问题 I have some knee segmentation images here is an example My goals are: Generate green colored dot in each object automatically. Create a line which is across each object and black colored dot from intersection of cross sign automatically. find the angle from intersection of these lines. Illustration of my goals is done here I've created cross sign in each objects (femur and tibia), but the problem is I don't know what to do to achieve the next steps. Please, I need your help. MATLAB or C

问题 I'm trying to plot the heading of an object. I have four vectors of points - let's call them mdex mdey (aka x1,y1 ), thpx thpy (aka x2,y2 ). I am finding the change in y and the change in x ( dy and dx ) and then entering that into the atan2d function. I then run through the results and plot them onto a chart. The scale on the chart goes from -180 to 180. My problem arises when the line passes through -180 or 180 degrees. It then 'pops' to the opposite side of the graph (i.e. what would be

问题 I am trying to implement a script to analyze some of my data. I have position information for three points (p1,p2,p3). I would like to find the angular displacement of point p3 from the vector p1p2, as in this picture: p3a, p3b, p3c, p3d show possible relative positions for p3. As shown, I would like the sign of the output angle to describe its relative position to vector p1p2. The code I am using is as follows (adapted to the diagram): v1 = p2 - p1; x1 = v1(1); y1 = v1(2); v2 = p1 - p3; x2 =

问题 An ideal Wind Energy Farm will have all the turbines rotating with the same Blade Angle*, in a similar fashion. The blades of different turbines spin at variable speeds. As a result of this, the Blade Angle for every Wind Turbine is different. Considering a case of 4 Wind Turbines, each placed a 100 meter apart and forming a Blade Angle of ө1, ө2, ө3 and ө4, we can use OpenCV to monitor the Blade angles of each turbine by using suitable computer vision algorithms and by taking into account

问题 I have 2 lines with coordinates A(x1,y1; x2,y2) and B (x3,y3; x4,y4). Can I find the angle between them using MatLab. 回答1: I guess if you are just looking for the code, something like this should do? v1=[x2,y2]-[x1,y1]; v2=[x4,y4]-[x3,y3]; angle=acos(sum(v1.*v2)/(norm(v1)*norm(v2))); 来源： https://stackoverflow.com/questions/37589661/finding-an-angle-between-two-lines-in-matlab

问题 I made a JSlider with Java that changes the angle the line needs to be slanted at. angle = new JSlider(SwingConstants.HORIZONTAL, 0, 180, 90); angle.setSize(300, 50); angle.setLocation(650, 60); angle.setPaintTicks(true); angle.setPaintTrack(true); angle.setMinorTickSpacing(10); angle.setMajorTickSpacing(30); angle.setPaintLabels(true); angle.addChangeListener(this); thepanel.add(angle); I want the code to draw that line that implements the angle from the JSlider. Here is my code: public void