coordinates

I drew a line that is at an angle based on a slider. I am trying to make the line's end Y coordinate a certain number (let's say 300), even if it is at an angle. Any ideas on how to do this? Here is the work on my line so far: double angle = intAngle; angle = angle * Math.PI / 180; double length = 300; graphics.setColor(Color.RED); double startX = 300; double startY = 100; double endX = startX + length * Math.cos(angle); double endY = startY + length * Math.sin(angle); double end2X; double end2Y; double dblAngle; double angle2; int intAngle2; double start2X = endX; double start2Y = endY;

My goal is to transfer a coordinate in perspective from a known rectangle (for example a 800 by 600 screen) to a quadrangle that is skewed/rotated. To do so i found this, which was extremely helpful: Transforming captured co-ordinates into screen co-ordinates I guess there are more solutions to the problem. 1 by making triangles out of your quadrangle and apply some mathematical function which i could not solve yet. OR using the H-matrix which comes out of the formula A=USVt. which seemed nice because once you have the correct H-matrix you can transfer any coordinate pretty easy as explained

Could someone give me an example of how to extract coordinates for a 'word' with PDFBox I am using this link to extract positions of individual characters: https://www.tutorialkart.com/pdfbox/how-to-extract-coordinates-or-position-of-characters-in-pdf/ I am using this link to extract words: https://www.tutorialkart.com/pdfbox/extract-words-from-pdf-document/ I am stuck getting coordinates for whole words. You can extract the coordinates of words by collecting all the TextPosition objects building a word and combining their bounding boxes. Implementing this along the lines of the two tutorials

Its is possible get the coordinates(latitude and longitude), of a geo location using just the geo address (country, state, city, street, etc...), on Qt c++? I know the libraries QGeoCoordinates, QGeoLocation and QGeoAddress, but i don´t know if is possible get coordinates from an address through them. Every help is welcome. I needed some time to master this but finally I got it working. At first I tried the classes mentioned by you: QGeoAddress , QGeoLocation , QGeoCoordinate : // standard C++ header: #include <iostream> // Qt header: #include <QGeoAddress> #include <QGeoCoordinate> #include

I know there are many many questions about sorting javascript arrays by multiple values, but none of the answers solved my problem. I have an array of coordinates like: x | y -------- 10 20 12 18 20 30 5 40 100 2 How can I get the coordinate that is closest to the point of origin? Calculate the distance of each point using Math.sqrt( Math.pow(x, 2) + Math.pow(y, 2) ); Take the result that's the lowest var points = [ {x: 10, y: 20}, {x: 12, y: 18}, {x: 20, y: 30}, {x: 5, y: 40}, {x: 100, y: 2} ]; function d(point) { return Math.pow(point.x, 2) + Math.pow(point.y, 2); } var closest = points