Thread: invalid initializer

hello!

i declared these types:

Code:

typedef struct fVector2D {
  float x;
  float y;
}tVector2D;

...

typedef struct fVector3D {
  float x;
  float y;
  float z;    
}tVector3D;

...

typedef struct tDreieck *pDreieck;
struct tDreieck {
	unsigned int punkte[3];
...
};

...

typedef struct koerper{
...
      unsigned int anzDreieck;
      pDreieck dreiecke;
      tVector3D *p_punkte;
...
}tKoerper; 
typedef struct koerper *pKoerper;

...

typedef struct objekt {
...
      pKoerper p_koerper;
...
}tObjekt;

...

typedef struct szenenGraph *pSzenenGraph;
struct szenenGraph
{
  tObjekt objekt;
  pSzenenGraph kind;
  pSzenenGraph prev;
  pSzenenGraph next;
};

and im trying this:

Code:

void
zeichneSzenenGraph(pSzenenGraph wurzelzeiger){
...
tVector3D normale = vec3Cross(vec3Sub(wurzelzeiger->objekt.p_koerper->p_punkte[wurzelzeiger->objekt.p_koerper->dreiecke[n].punkte[3]],
                                                           wurzelzeiger->objekt.p_koerper->p_punkte[wurzelzeiger->objekt.p_koerper->dreiecke[n].punkte[2]]),
                                                   vec3Sub(wurzelzeiger->objekt.p_koerper->p_punkte[wurzelzeiger->objekt.p_koerper->dreiecke[n].punkte[1]],
                                                           wurzelzeiger->objekt.p_koerper->p_punkte[wurzelzeiger->objekt.p_koerper->dreiecke[n].punkte[2]]));
...
}

trying to compile, i get :"invalid initializer"

can anyone tell me why, please?

thanks
martin

Well peeling away several layers of indirection with a local variable would help

Code:

pKoerper *bar = wurzelzeiger->objekt.p_koerper;
tVector3D normale = vec3Cross(vec3Sub(bar->p_punkte[bar->dreiecke[n].punkte[3]],
                                      bar->p_punkte[bar->dreiecke[n].punkte[2]]),
                              vec3Sub(bar->p_punkte[bar->dreiecke[n].punkte[1]],
                                      bar->p_punkte[bar->dreiecke[n].punkte[2]]));

Then my next impression is that you think arrays start at 1, and not 0, because you have this declaration in a struct
unsigned int punkte[3];
and your code is trying to access an out-of-range element

thank you for your answer salem.
the problem is, i cannot initialize a variable *bar like you did. i get:

Code:

[Warning] initialization from incompatible pointer type

i tried not to hide my pointers, like quzah suggested, but that didnt do it either.

>>misplaced
vec3Cross and vec3Sub return tVector3D.

any other idea?

Well I would assume you would pick the right type for the pointer.

>>Well I would assume you would pick the right type for the pointer.
i did!

Code:

pKoerper *bar = wurzelzeiger->objekt.p_koerper;

I suggest you create a single file containing the bare minimum of declarations and code which compiles with the same error messages, then post that code.

thanks guys. i found out myself.
i forgot to include "vectorOperations.h"...
hmpf!

sorry to bother with such a beginner problem