CurvaMal

#include "stdafx.h"
#include "Pieza_CurvaExt.h"
#include <glew.h>
#define _USE_MATH_DEFINES
#include <math.h>

#include "CurvaExterior.h"


Pieza_CurvaExt::Pieza_CurvaExt(Material* mtl, GLfloat p, GLfloat m, GLfloat r0, GLfloat r1)
{
        numFaces = 2 * (2 * (m+1) * p);      // Number of faces
        numVertices = 2 * ((m+1)* (p + 1));  // Number of vertices
        vertices = new GLfloat[numVertices * 3];
        indexes = new GLushort[numFaces * 3];

        int verticesIndex = 0;
        int indexesIndex = 0;

        for (int i = 0; i <= p; i++)
        {
            GLfloat r = r0 + (r1 - r0)*i / p;
            for (int j = 0; j <= m; j++)
            {
                GLfloat mCos = (GLfloat)cos(2 * M_PI*j / m);
                GLfloat mSin = (GLfloat)sin(2 * M_PI*j / m);
                vertices[verticesIndex] = mCos * r;
                vertices[verticesIndex + 1] = 0.0f;
                    vertices[verticesIndex + 2] =  mSin * r;
                verticesIndex += 3;
            }
        }

        for (int i = 0; i < p; i++)
        {
            for (int j = 0; j <= m; j++)
            {
                indexes[indexesIndex] = m * i + j;
                indexes[indexesIndex + 1] = m * (i + 1) + j;
                indexes[indexesIndex + 2] = (m * (i + 1) + j + 1);
                indexesIndex += 3;

                indexes[indexesIndex] = m * i + j;
                indexes[indexesIndex + 1] = ( m * (i + 1) + j + 1);
                indexes[indexesIndex + 2] = ( m * i + j + 1);
                indexesIndex += 3;
            }
        }

        int base = verticesIndex / 3;

        for (int i = 0; i <= p; i++)
        {
            GLfloat r = r0 + (r1 - r0)*i / p;
            for (int j = 0; j <= m; j++)
            {
                GLfloat mCos = (GLfloat)cos((M_PI / 8)*j / m);
                GLfloat mSin = (GLfloat)sin((M_PI / 8)*j / m);
                vertices[verticesIndex] = mCos * r;
                vertices[verticesIndex + 1] =  0.0f;
                vertices[verticesIndex + 2] = mSin * r;
                verticesIndex += 3;
            }
        }

        for (int i = 0; i < p; i++)
        {
            for (int j = 0; j <= m; j++)
            {
                indexes[indexesIndex] = base + m * i + j;
                indexes[indexesIndex + 1] = base + (m * (i + 1) + j + 1);
                indexes[indexesIndex + 2] = base + m * (i + 1) + j;
                indexesIndex += 3;

                indexes[indexesIndex] = base + m * i + j;
                indexes[indexesIndex + 1] = base + (m * i + j + 1);
                indexes[indexesIndex + 2] = base + (m * (i + 1) + j + 1);
                indexesIndex += 3;
            }
        }

    InitBuffers();
    SetMaterial(mtl);
}