opengl-compat

问题 I am making a game (RPG) in PyOpenGL which I have a crosshair. I want to check if a 3d object is in the crosshair (or detect if it is at a point), which is a 2d overlay. How can I do that? I tried to use screen.get_at() function, but it displays an error "Cannot call on OpenGL surfaces". Also, it is not good because it only detects a colour, not an object (although you can use the colour to determine an object, but what if there are several objects that have the same colour?). This is what I

问题 I am making a game (RPG) in PyOpenGL which I have a crosshair. I want to check if a 3d object is in the crosshair (or detect if it is at a point), which is a 2d overlay. How can I do that? I tried to use screen.get_at() function, but it displays an error "Cannot call on OpenGL surfaces". Also, it is not good because it only detects a colour, not an object (although you can use the colour to determine an object, but what if there are several objects that have the same colour?). This is what I

问题 I'm trying to render a scene with OpenGL 2.1 but the borders on overlapping shapes are weird. I tested some OpenGL initialisations but without any change. I reduce my issue to a simple test application with 2 sphere with the same result. I tried several things about Gl_DEPTH_TEST, enable/disable smoothing without success. Here is my result with 2 gluSphere : We can see some sort of aliasing when a line will be enough to separate blue and red faces... I use SharpGL but I think that it's not

问题 I'm trying to render a scene with OpenGL 2.1 but the borders on overlapping shapes are weird. I tested some OpenGL initialisations but without any change. I reduce my issue to a simple test application with 2 sphere with the same result. I tried several things about Gl_DEPTH_TEST, enable/disable smoothing without success. Here is my result with 2 gluSphere : We can see some sort of aliasing when a line will be enough to separate blue and red faces... I use SharpGL but I think that it's not

问题 I've written a code to draw a line. Here is the function: def drawLines(): r,g,b = 255,30,20 #drawing visible axis glClear(GL_COLOR_BUFFER_BIT) glColor3ub(r,g,b) glBegin(GL_LINES) #glRotate(10,500,-500,0) glVertex2f(0,500) glVertex2f(0,-500) glEnd() glFlush() Now I'm trying to rotate the line. I'm trying to follow this documentation but can't understand. According to the documentation the rotating function is defined as follows: def glRotate( angle , x , y , z ): I've no z-axis. So I'm

问题 I've written a code to draw a line. Here is the function: def drawLines(): r,g,b = 255,30,20 #drawing visible axis glClear(GL_COLOR_BUFFER_BIT) glColor3ub(r,g,b) glBegin(GL_LINES) #glRotate(10,500,-500,0) glVertex2f(0,500) glVertex2f(0,-500) glEnd() glFlush() Now I'm trying to rotate the line. I'm trying to follow this documentation but can't understand. According to the documentation the rotating function is defined as follows: def glRotate( angle , x , y , z ): I've no z-axis. So I'm

问题 I've written a code to draw a line. Here is the function: def drawLines(): r,g,b = 255,30,20 #drawing visible axis glClear(GL_COLOR_BUFFER_BIT) glColor3ub(r,g,b) glBegin(GL_LINES) #glRotate(10,500,-500,0) glVertex2f(0,500) glVertex2f(0,-500) glEnd() glFlush() Now I'm trying to rotate the line. I'm trying to follow this documentation but can't understand. According to the documentation the rotating function is defined as follows: def glRotate( angle , x , y , z ): I've no z-axis. So I'm

问题 I want to display some simple text on the HUD of my 3D environment in OpenGL. All sources say that I should use the bitmap fonts included in GLUT, however, my program can't seem the find/load the fonts. I have included all of the correct libraries and have double checked that the fonts.py file is definitely in the ...\Python37\...\OpenGL\GLUT\ directory, but when I type GLUT_BITMAP_TIMES_ROMAN_24 (or any of the other bitmap fonts), it is highlighted as an error in my code. This is the

问题 I need to translate my wired sphere along z-axis back and forth while also changing camera angle. Whenever my sphere gets translated, it slowly turns into ellipsoid. I really don't understand why. Here you can see pieces of code where I believe is a mistake. Also, shapes shouldn't be changed when resizing the window, only their size. void init() { glClearColor(0.0, 0.0, 0.0, 0.0); glEnable(GL_DEPTH_TEST); } void display(void) { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glPushMatrix(

问题 I need to translate my wired sphere along z-axis back and forth while also changing camera angle. Whenever my sphere gets translated, it slowly turns into ellipsoid. I really don't understand why. Here you can see pieces of code where I believe is a mistake. Also, shapes shouldn't be changed when resizing the window, only their size. void init() { glClearColor(0.0, 0.0, 0.0, 0.0); glEnable(GL_DEPTH_TEST); } void display(void) { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glPushMatrix(