coordinates

Imagine we have two randomly selected points between 0 and 100 for both x and y. For example: (95,7), (35,6) Now using the simple pygame.draw.line() function we could easily draw a line between these points without any gaps. My question is, how could we find a list of all the coordinates in a single pixel thick line between the two points without any gaps in the line? Secondly, is this even possible? I am using this list of pixel for the crack maze algorithm that needs to "shoot" another pixel while regarding any blocking walls that may interfere with its path. http://www.astrolog.org/labyrnth

How can I get the coordinates of the cursor in the EditText ? I am not trying to get the cursor position here but the EditText coordinates of the cursor. In my case, when I send a number via KeyEvent to the EditText, the cursor position (getSelectionStart) is changed, but its location is always at the right of the EditText. I want to know the coordinates of the cursor (the right of the EditText). It's a little bit late answer :), but from API level 21 (Lollipop) there is a way to do it: Override onUpdateCursorAnchorInfo(CursorAnchorInfo cursorAnchorInfo) in your InputMethodService and call

I store coordinates as latitude longitude pairs in my database. Now, I need to retrieve all the entries that are within a given radius from a given lat-long coordinate. For example, if given coordinates 48.796777, 2.371140 and distance of 20 kilometers, it would retrieve all the records within 20 kilometers from that point. If it provides any simplification or results in less CPU time, it's accurate enough to calculate the "straight" distance between the points, i.e. there's no need to factor in the curvature of the earth. How can this be achieved with Django? More specifically, how should the

I have Group objects that consist of other Group objects, that finally consist of Actor objects. Now, when the groups and actors are rotated, offset and scaled, the coordinates in the "world", or in relation to the root node change. How do I get the world coordinates of a point in an actor's local space? To illustrate a bit more, here's an example of what I want: Group parentGroup; Actor childInGroup; ... parentGroup.addActor(childInGroup); childInGroup.setPosition(10f, 15f); childInGroup.setRotation(45f); // Get the childInGroup's position in the world float childWorldPosX = ...; // This is

Below is an image my coordinate system: What I am trying to do is that I want to start scaling around a specific point in the canvas, the scaling works fine but my problem is that I don't know how to calculate how much to move the canvas while scaling, note that I am not using canvas.scale. I am simply increasing the distance between each 2 units in the system while scaling and it's working just fine. So is there any equation that can help me find out how much to offset the canvas while scaling at specific point? Suppose I want to scale around point(0,4) how to know how much to move the canvas

I'm writing a library that deals with 2D graphical shapes. I'm just wondering why should my coordinate system range from [-1, 1] for both the x and y axis instead of [0, width] for x and [0, height] for y ? I went for the latter system because I felt it was straight forward to implement. From Jim Blinn's A Trip Down The Graphics Pipeline , p. 138. Let's start with what might at first seem the simplest transformation: normalized device coordinates to pixel space. The transform is s_x * X_NDC + d_x = X_pixel s_y * Y_NDC + d_y = Y_pixel A user/programmer does all screen design in NDC. There are

I'm a noob to android development and I am trying to figure out how to display the NewQuickAction3D popup dialog at a specific coordinate in a view. I am integrating the popup with this tutorial. Essentially, I want to use the popup dialog to display data where the users touch instead painting on the canvas using "infoview" Currently, the popup displays at the top&center of the view that I anchor it to. How can i make it display a particular coordinate? Any help is greatly appreciated. MY CODE public void updateMsg(String t_info, float t_x, float t_y, int t_c){ infoView.updateInfo(t_info, t_x,

I have a NetCDF file with rotated coordinates. I need to convert it to normal lat/lon coordinates (-180 to 180 for lon and -90 to 90 for lat). library(ncdf4) nc_open('dat.nf') For the dimensions, it shows: [1] " 5 variables (excluding dimension variables):" [1] " double time_bnds[bnds,time] " [1] " double lon[rlon,rlat] " [1] " long_name: longitude" [1] " units: degrees_east" [1] " double lat[rlon,rlat] " [1] " long_name: latitude" [1] " units: degrees_north" [1] " char rotated_pole[] " [1] " grid_mapping_name: rotated_latitude_longitude" [1] " grid_north_pole_longitude: 83" [1] " grid_north