Opengl zoom to mouse position
WebGet the world-space coordinates of the mouse cursor using the current zoom factor and model/proj/view matrices. Adjust zoom factor. Get the world-space mouse coordinates … WebI would like the zoom to use the mouse position as a pivot and everything scale around it keeping the position under the mouse unchanged. I currently have a bit of code working but it only works for the first mouse drag and then after it starts jumping around on subsequent clicks.I think it's something to do with my transforms not being accumulated …
Opengl zoom to mouse position
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Web11 de abr. de 2016 · hi everyone thanks for stopping by, here my proble, am trying to zoom on the mouse position(x and z), the zoom is progressive(not in one go) so this mouse position change as we zoom.So we end up overshooting the object the mouse was on it. Exemple: In Game: (in red is the cursor postion) (Zoom Out) (Zoom In) Web2 de abr. de 2024 · I am trying to move an object on the 2D plane to follow the mouse position. I converted the mouse's XY and depth buffer value to world space coordinates, but the problem is that when I run the program, the object is really far away. When I move the mouse, the object follows it, but also it is rotating on the Y and X axes.
Web19 de fev. de 2013 · No I want to zoom with the point underneath the mouse as the pivot and everything else scale around it. I have tried various ways of getting around the offet … WebThe problem is looking up and down. I tried to do a similar thing and make the camera look down or up according to the vertical position of the mouse on the screen. Trying to make that work, I am rotating look at around the x axis so that (0,0,-100) becomes (0, 4, -96) (user moved mouse to look upwards).
WebFoV is the level of zoom. 80° = very wide angle, huge deformations. 60° - 45° : standard. 20° : big zoom. We will first recompute position, horizontalAngle, verticalAngle and FoV … WebIn this video we're going to learn how to use render to texture in order to implement selection of a 3D objects using the mouse in OpenGL. This tutorial assu...
Web12 de fev. de 2002 · Two normalized rectangles are maintained by the COGL class: one for the full size image, and one for the current zooming rectangle. The image presented by OpenGL is scaled by the ratio of the rectangles, adjusted according to the viewport aspect and translated to the center of current zooming rectangle. Finally sorry for my poor English.
Web24 de mai. de 2024 · I am working on a 2D game engine / prototype and I am having trouble with something - getting the 'absolute' world coordinates based off mouse coordinates. My 2D camera, or 'Viewport' is identified by its position, a vector, and a zoom factor, that is between .5F - 1.5F (50% - 150%). greene physical therapy greene nyWebWe first have to store the last mouse positions in the application, which we initialize to be in the center of the screen (screen size is 800 by 600) initially: float lastX = 400, lastY = … flughafen rom fiumicino corona testWeb3 de fev. de 2013 · I’m despairing of the task to zoom in on the current mouse position in OpenGL. I’ve tried a lot of different things and read other posts on this, but I couldn’t adapt the possible solutions to my specific problem. So as far as I understood it, you’ll have to get the current window coordinates of the mouse curser, then unproject them to get world … flughafen richards bayWebdef MouseWheelScroll(self, event): """Called when the mouse's scroll wheel is scrolled up or down. This modifies the zoomFactor which renders the graphics closer or further away … flughafen reus ryanairWeb2 de nov. de 2010 · glGetIntegerv(GL_VIEWPORT, @fViewport); //convert window coordinates of the mouse to gl's coordinates zoomtoxgl := mouse.zoomtox; zoomtoygl := (fviewport[3] - (mouse.zoomtoy)); //set up projection matrix … flughafen riad loungeWebMouse: Moving the Camera III. In the previous example we changed the orientation of the camera with the keyboard. In here we are going to use the mouse instead. When the user presses the mouse left button we are going to record the X position of the mouse. As the mouse moves will check the new X position, and based on the difference we’ll set ... green epiphone casinoWeb4 de jun. de 2024 · I wish to implement a zoom-to-mouse-position-with-scrollwheel-algorithm for a CAD application I work on. Similar question have been asked (This one for example), but all the solutions i found used the . Translate to origin ; Scale to zoom ; Translate back; approach. greene phone trump