3d engine help. What did I do wrong?

[raubana]

I made a simple 3d engine with python, but it's slow, intersections don't show, and faces dissapear when your at a certian place. Here's the link:

http://www.mediafire.com/?dggmjfnfts0

If you can tell me how to make a better one, please do!

[raubana]

I made the first one in the "Python" forum, so I decided to put a local call for help out. Here's the link:

http://bytes.com/forum/thread795115.html

PLEASE HELP!

[Stang02GT]

Well 1st of all. If you posted a question and it hasn't been answered in the correct thread, please do not go and start posting it other places. It's not going to get you an answer faster. You have enough posts and seem to have been here long enough that you should have read the posting guidelines and saw that you shouldn't double post questions.

In case you don't know where the POSTING GUIDELINES are i have posted the link.


Secondly, when i looked at your post in the other forum, you only posted it yesterday. Give it time for someone to look at. Please do not go around posting things like this to draw attention to your question. When our experts have time to look at it they will. Give it sometime.


Thank You.

[raubana]

......................................okay.

[RedSon]

I made a simple 3d engine with python, but it's slow, intersections don't show, and faces dissapear when your at a certian place. Here's the link:

http://www.mediafire.com/?dggmjfnfts0

If you can tell me how to make a better one, please do!

It would be better for you to try to identify the problem yourself or at least narrow it down and then post the relavent code for us to look at.

You arn't getting any help because people are not interested in downloading some random files from someone who they don't know and then go through it line by line telling you how to make it better. It is up to you to make it better, or you can join a site like sf.net and start a project then recruit people to help you. We are here to troubleshoot problems and help you solve specific issues.

[RedSon]

Also, I moved your post from Misc forum and merged it into this one. Please pay attention to Stang02GT's post. Further issues regarding your ignorance of the posting guidelines will be met more harshly then with warnings.

[raubana]

Yes, I know. I already got in a little trouble.
(I still don't know how I missed that...)

The fact is I have now way of showing you the code cause I'm on an old computer. I have to go to my school, plug in a flashdrive, then upload a file, but the only way I can do that is if I'm on a newer computer.

Also, if you are too afraid to download the file, that's fine. But I make a strong promise that it will cause your computer no harm.

[RedSon]

Yes, I know. I already got in a little trouble.
(I still don't know how I missed that...)

The fact is I have now way of showing you the code cause I'm on an old computer. I have to go to my school, plug in a flashdrive, then upload a file, but the only way I can do that is if I'm on a newer computer.

Also, if you are too afraid to download the file, that's fine. But I make a strong promise that it will cause your computer no harm.

What do you mean you can't show the code? You already put it online, just download it to any computer you want. Then you can post the code in this forum or if you don't want to do that you can use something like http://pastebin.ca/ and post it there.

I'm afraid I don't see what the problem is. Also for future reference, no matter how strong your promise is, doesn't mean I'm going to trust you any more then I did previously.

[raubana]

I guess you right. My explination didn't make much sense. Let me try again:

(1) I don't have internet at home so I have to plug in a flash drive into my computer and put my files on it

(2) I then go to my school to upload my files onto mediafire.com. The only time I can do this is when one of my classes is in a computer lab because the computer lab has new Dell computers, not crapy old macs (like the one I'm on right now)

(3) This crappy computer cannot handle flashdrives, and even though I can access this computer any time I want, I cannot get to the newer ones when ever I want.

(4) The schools computers block many things (websites, files, etc.), one of those things is downloading and uploading. This specific problem isn't built into the new computers, just the old ones, so I can't just download the files and show it to you.

There, I think that sums it up. So you see, the only way you could help me is if you downloaded the file. Sorry.

[raubana]

Hey! And isn't mediafire.com a protected website? ...yeah! It scans for possable viruses so you don't get infected!

[RedSon]

Hey! And isn't mediafire.com a protected website? ...yeah! It scans for possable viruses so you don't get infected!

The thing about virus's is the fact that a virus first has to be seen in the wild and a signature has to be made for it, it doesn't do heuristic scanning very well. Furthermore a text file (a .py) is considered low risk because it is not an executable and you cannot embed executable code in it.

I'll see if someone might be willing to look at it but don't get your hopes up.

[Atli]

Seeing as the OP is having technical difficulties, let me just help out by posting his code here where everybody can see it.
Not knowing the first thing about python, I'll just post the whole thing.
Good luck :P

import pygame
from pygame.locals import*
import math
import random
import time
 
pygame.init()
 
size = [800,400]
screen = pygame.display.set_mode(size)
 
def rotate_point(point, center, rotation):
    import math
    info= [math.sqrt(  (point[0]-center[0])**2+ (point[1]-center[1])**2 ), math.atan( (point[1]-center[1])/(point[0]-center[0]) ) ]
 
    info[1]+=math.radians(rotation)
    if info[1]>math.pi*2: info[1]-=math.pi*2
 
    return[math.cos(info[1])*info[0]+center[0],math.sin(info[1])*info[0]+center[1]]
 
class Face(object):
    def __init__(self, face_vectors, color):
        self.shape = face_vectors
        self.color = color
    def update(self, camera, cam_range, rotation):
        p = []
        min_magn = camera[2]-self.shape[0][2]
        for point in self.shape:
 
            rot_points=rotate_point([point[0],point[2]],[camera[0],camera[2]],rotation[1])
            cam_view = [ camera[0]-rot_points[0], camera[1]-point[1], camera[2]-rot_points[1]]
 
            presp_view = get_3d_view(cam_view, camera_range)
 
            presp_view[0]+=screen.get_width()/2
            presp_view[1]+=screen.get_height()/2
 
 
            p.append(presp_view)
            if cam_view[2]<min_magn:
                min_magn = cam_view[2]
 
        self.threedshape = p
        self.closest = min_magn
 
    def render(self, screen, disappear_distance):
        min_magn = self.closest
        if min_magn>0.1:
            red = int(min(abs(disappear_distance/float(min_magn)*self.color[0]),self.color[0]))
            green = int(min(abs(disappear_distance/float(min_magn)*self.color[1]),self.color[1]))
            blue = int(min(abs(disappear_distance/float(min_magn)*self.color[2]),self.color[2]))
            pygame.draw.polygon(screen, [red,green,blue], self.threedshape)
 
def Face_closest(faces):
    return faces.closest
 
def get_3d_view(vector, d):
    x,y,z=vector
    return [-int(x*float(d)/z), int(y*float(d)/z)]
 
 
 
 
camera_range = 900
disappear_distance=100
cam_speed = 0.1
res = 100
rot_speed = 1
 
camera =[ 1.0001,1.0001,10.0001 ]
 
faces = [ Face(  [  [15.,0.,15.], [15.,1.,15.], [16.,1.,15.], [16.,0.,15.] ], [255,255,255]) ]
 
rotate = [0.0001,0.0001,0.0001]
 
 
while True:
    print rotate
    while rotate[1]>360:
        rotate[1]-=360
    while rotate[1]<0:
        rotate[1]+=360
 
    keys = pygame.key.get_pressed()
 
    if keys[K_DOWN]:
        camera[2]-=math.cos(math.radians(rotate[1]))*cam_speed
        camera[0]-=math.sin(math.radians(rotate[1]))*cam_speed
    elif keys[K_UP]:
        camera[2]+=math.cos(math.radians(rotate[1]))*cam_speed
        camera[0]+=math.sin(math.radians(rotate[1]))*cam_speed
 
    if keys[K_LEFT]:
        rotate[1]+=rot_speed
    elif keys[K_RIGHT]:
        rotate[1]-=rot_speed
 
    if keys[K_q]:
        camera[1]+=cam_speed
    elif keys[K_a]:
        camera[1]-=cam_speed
 
    for face in faces:
        face.update(camera, camera_range, rotate)
    faces.sort(key=Face_closest, reverse=True)
    for face in faces:
        face.render(screen, disappear_distance)
 
 
    pygame.draw.rect(screen, [0,0,255], [camera[0],camera[2],0,0])
    pygame.display.update()
    screen.fill([0,0,0])
 
     # === ANTI-CRASH ===
    for event in pygame.event.get():
        if event.type == QUIT or keys[K_ESCAPE]:
            pygame.quit(); sys.exit()
 

[raubana]

Yep! That's my code! Thanks a ton, man!

My typing is very messy and I might have spelling errors everywhere. I also should have put notes in everyplace, but...you know.

Once again, thanks a lot!

[jlm699]

I don't get it. When I run this all I get is a black screen with a blue pixel that I can move around with the arrow keys. Occasionally there is a white rectangle that will zoom by in the background.

Is this what the problem is? Or am I missing something?

[raubana]

Yes, that's the problem.

OH! the dot is like a map thing that shows where your at and you start out with the face behind you. To see it, movge untill the dot is still visable and is diaganal to the corner it starts at. Then turn to see the face.