opengl-compat

问题 I tried to read obj file with pyopengl but error come from glGenList(1) I just want to read the file and display in opengl Pls can you help me with full code; Am tired of stack and error it took me 3hrd to post this from OpenGL.GL import * from tkinter import messagebox import sys filename = input('pls input file path: ') class OBJ: def __init__(self, filename, swapyz=False): """Loads a Wavefront OBJ file. """ self.vertices = [] self.normals = [] self.texcoords = [] self.faces = [] material =

问题 This is my first time working with textures in OpenGL, although I've been studying it for 4 months now. And when I try to load a texture (Just an image with a square) I get just a black square.\ My texture load code: byte[] pixelData = new byte[0]; try { BufferedImage bi = ImageIO.read(getClass().getResource(TEXTURE_FILES)); ByteArrayOutputStream baos = new ByteArrayOutputStream(); ImageIO.write(bi, "png", baos); baos.flush(); pixelData = baos.toByteArray(); baos.close(); } catch (IOException

问题 I'm randomly creating points to use to draw a polygon with Pyglet. But Pyglet doesn't do the job right most of the time. Well I tried drawing a polygon with another graphic module and actually it worked but if Pyglet was working alright it would make my job easier. I use this to draw polygon and points (to make it easy for you see). point_list = [18, 61, 59, 149, 328, 204, 305, 284, 3, 197, 25, 107] ec = int(len(point_list)/2) batch.add(ec, pyglet.gl.GL_POLYGON, None, ("v2i", point_list), (

问题 Recently I had this issue. Now that I've fixed that with given solution, I ran into some other issues. Here is a gif of the animation I have to achieve. Issues I have now are: the ball in my animation doesn't look like it's moving forwards and backwards like it is at the beginning of the .gif. I do believe this has something to do with Ortho but I don't know how to fix this. Also, at some point, when it's moving completely to the right, the moving ball and torus just get "swallowed", it's

来源： https://stackoverflow.com/questions/56787061/is-there-a-way-to-render-points-faster-opengl

来源： https://stackoverflow.com/questions/56787061/is-there-a-way-to-render-points-faster-opengl

问题 I was watching a video about pyglet and I tried to create a triangle: import pyglet from pyglet.gl import * class mywindow(pyglet.window.Window): def __init__(self, *args,**kwargs): super().__init__(*args,**kwargs) self.set_minimum_size(300,300) window = mywindow(300,300,"deneme", True) def on_draw(): glBegin(GL_TRIANGLE) glColor3b(255,0,0) glVertex2f(-1,0) glColor3b(0,255,0) glVertex2f(1,0) glColor3b(0,0,255) glVertex2f(0,1) window.on_draw() pyglet.app.run() when I run this code; I get this

问题 I want to create a linked list of vectors and with the help of GLUT library get the positions of the clicks and append them to the linked list. These are the structs i wrote. typedef struct vector{int x;int y;}Vector; typedef struct VectorList{Vector X; struct VectorList*next; }node_v; I globally defined a P vector and linked list of vectors prev. Vector P; node_v * prev=NULL; Inside the mouse callback function _mouse_CB everytime left mouse button is clicked, i want to update the P vector

问题 I am following the tutorial available in https://pythonprogramming.net/opengl-pyopengl-python-pygame-tutorial/ where he teachs how to render a cube with pyOpenGL an pygame. When rendering the cube, the tutorial set color to all the vertices of the cubes and then dispays it. However, im my project, i load object from a .obj file using the code provided in https://www.pygame.org/wiki/OBJFileLoader and most of my objects is fully white. Conclusion: when i render it on screen, i only see full

问题 I am following the tutorial available in https://pythonprogramming.net/opengl-pyopengl-python-pygame-tutorial/ where he teachs how to render a cube with pyOpenGL an pygame. When rendering the cube, the tutorial set color to all the vertices of the cubes and then dispays it. However, im my project, i load object from a .obj file using the code provided in https://www.pygame.org/wiki/OBJFileLoader and most of my objects is fully white. Conclusion: when i render it on screen, i only see full