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OpenGL 3D code producing program

davior · 2000-05-09T13:53:08

Hi all.. I just thought I might post an idea of a program I am working on, to see what people think about it, and to brainstorm the whole idea... I am currently working on a program which creates self contained OpenGL code.. I am wanting to eventually create a game which is based in a 3D world, but I don''t want to have to hard code the graphics and levels. Here is a basic example of how it works. For each object you want to create you input a number of parameters. eg. for a box/cube you only need Height, width and depth. From these 3 parameters it produces the code for the box, and displys it on the screen. So effectively, you have created a 3D object which normally uses 24 vertexs (or 72 coordinates), with only 3 variables.... Pretty cool hey? Anyway, I have inplemented this code and it works fine. I could quite easily include another 3 variables for the position of the object. So thats cool, but imagine the same concept applied to a complex series of polygons, like a room. You could have variables to include objects in this room like windows or doors. Enter height, width, depth, wall thickness, window?, doors? and BOOM goto "save as code" and there you have it. What is essentually written to file when saved, is a single function which contains information on all the objects created, thier position etc.. and all you have to do is call this function from your main program, compile and there you have it.... So basicly, in the end I will have a program, remeniscent of 3D Studio Max, except it saves in OpenGL code, instead of raw data.. What dya think of that? Any ideas?? I just thought that this was an idea worth sharing with others, cos the applications for a program like this one are endless.. Anyway I hope this simple idea gives others inspiration for thier programs. davior

General and Gameplay Programming Programming

Started by davior May 07, 2000 12:23 PM

12 comments, last by davior 23 years, 11 months ago

benjamin bunny

838

May 08, 2000 02:41 PM

I hope this helps. Here''s how I store my objects:

typedef struct
{
int ver[3]; //vertex
float norm[3]; //flat tri normal (for flat shading)
float pNorm[3][3]; //point normals (for smooth shading)

float texCo[3][2]; //tex coord [point] [x/y]
} obtri_t;

typedef struct
{
unsigned numvers;
unsigned numfaces;

obver_t *ver;
obtri_t *tri;

char texFN[30]; //texture filename
int texNum; //GL texture object
} objectType_t;

typedef struct
{
float rot[3];
float pos[3];
objectType_t *OT;
} object_t;

http://www.geocities.com/ben32768

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davior

122

Author

May 09, 2000 09:50 AM

While obviously an idea which needs much refining, I feel that the concept still stands. While producing many lines of code for every object created IS ridiculous, with little thought and tweaking the same concept could produce a single line of code which uses a class or stucture to produce the same results. So essentually, yes, the iniatial idea was ridiculous. But the concept..... Thanks for your inputs. I'll let you know what I come up with, eventually...
davior