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copying array structure to dynamic array

General and Gameplay Programming Programming

Started by Julio August 03, 2001 10:01 PM

2 comments, last by Julio 23 years, 6 months ago

Julio

Author

116

August 03, 2001 10:01 PM

hi, for this compiled vertex array class I'm doing I delete the pointer to the indicies, re-allocate memory for it based on the vertex count * 3 (x,y,z). My rendering code worked fine before I added a feature to copy data from my Face data structure to my vertex array pointer. here's what the code looks like: basic stuff

    
const short unsigned int x = 0;
const short unsigned int y = 1;
const short unsigned int z = 2;

typedef struct 
{
	float fU, fV;
}Vector2D;

typedef struct 
{
	float fX, fY, fZ;
	float fU, fV;
}Vector3D;

struct Face
{
	Vector3D Triangle[3];
	//Vector2D TexCoord;

	Vector3D Normal;
	unsigned int iTexID;
};

for testing purposes. all values are getting set correctly.

  
        Face Tri[1];

	Tri[0].Triangle[0].fX=-1.0f; //-1,0,0

	Tri[0].Triangle[0].fY=0.0f;
	Tri[0].Triangle[0].fZ=0.0f;
	Tri[0].Triangle[1].fX=1.0f; //1,0,0

	Tri[0].Triangle[1].fY=0.0f;
	Tri[0].Triangle[1].fZ=0.0f;
	Tri[0].Triangle[2].fX=0.5f; //0.5,1,0

	Tri[0].Triangle[2].fY=1.0f;
	Tri[0].Triangle[2].fZ=0.0f;

Delete the array

  
	if (pIndicies)
	{
		delete [] pIndicies;
		pIndicies=0;
	}

Re-allocate memory

      
	pIndicies = new float[iVertexCount*3];

and finally copy it. I'd think this would be pretty easy but the values don't seem to be getting set.

      
	unsigned int v=0;
	for (unsigned int i=0; i<iVertexCount; i++)
	{
		/*for (int v=0; v<3; v++)
		{
			if (v==0)
				pIndicies[i+v]=pFaces.Triangle[x].fX;
			if (v==1)
				pIndicies[i+v]=pFaces.Triangle[y].fY;
			if (v==2)
				pIndicies[i+v]=pFaces.Triangle[z].fZ;
		}*/</font>
		pIndicies[<font color="purple">v+0</font>]=pFaces[<font color="purple">i</font>].Triangle[<font color="purple">x</font>].fX;
		pIndicies[<font color="purple">v+1</font>]=pFaces[<font color="purple">i</font>].Triangle[<font color="purple">y</font>].fY;
		pIndicies[<font color="purple">v+2</font>]=pFaces[<font color="purple">i</font>].Triangle[<font color="purple">z</font>].fZ;

		v+=3;
	}
    </pre></font></td></tr></table></center><!–ENDSCRIPT–>
thanks in advance to any who reply,
Joe    

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Edited by - Julio on August 3, 2001 11:05:03 PM

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