Hi guys!

I'm working on a new OpenGL problem today: Creating a 3D Solid Sphere in OpenGL.

I've used the following code to define a class '3DSphere.cpp' (according to Link).

Code:/* * 3DSphere.cpp * * Created on: Oct 30, 2012 * Author: guptaa */ #include <stdio.h> #include <stdlib.h> #include <gl.h> #include <glu.h> #include <glut.h> #include <math.h> #include <vector.h> class 3DSphere { protected: vector<GLfloat> vertices; vector<GLfloat> normals; vector<GLfloat> texcoords; vector<GLushort> indices; public: void SolidSphere(float radius, unsigned int rings, unsigned int sectors) { float const R = 1./(float)(rings-1); float const S = 1./(float)(sectors-1); int r, s; sphere_vertices.resize(rings * sectors * 3); sphere_normals.resize(rings * sectors * 3); sphere_texcoords.resize(rings * sectors * 2); vector<GLfloat>::iterator v = sphere_vertices.begin(); vector<GLfloat>::iterator n = sphere_normals.begin(); vector<GLfloat>::iterator t = sphere_texcoords.begin(); for(r = 0; r < rings; r++) for(s = 0; s < sectors; s++) { float const y = sin( -M_PI_2 + M_PI * r * R ); float const x = cos(2*M_PI * s * S) * sin( M_PI * r * R ); float const z = sin(2*M_PI * s * S) * sin( M_PI * r * R ); *t++ = s*S; *t++ = r*R; *v++ = x * radius; *v++ = y * radius; *v++ = z * radius; *n++ = x; *n++ = y; *n++ = z; } sphere_indices.resize(rings * sectors * 4); std:vector<GLushort>::iterator i = sphere_indices.begin(); for(r = 0; r < rings; r++) for(s = 0; s < sectors; s++) { *i++ = r * sectors + s; *i++ = r * sectors + (s+1); *i++ = (r+1) * sectors + (s+1); *i++ = (r+1) * sectors + s; } } void draw(GLfloat x, GLfloat y, GLfloat z) { glMatrixMode(GL_MODELVIEW); glPushMatrix(); glTranslatef(x,y,z); glEnableClientState(GL_VERTEX_ARRAY); glEnableClientState(GL_NORMAL_ARRAY); glEnableClientState(GL_TEXTURE_COORD_ARRAY); glVertexPointer(3, GL_FLOAT, 0, &sphere_vertices[0]); glNormalPointer(GL_FLOAT, 0, &sphere_normals[0]); glTexCoordPointer(2, GL_FLOAT, 0, &sphere_texcoords[0]); glDrawElements(GL_QUADS, sphere_indices.size()/4, GL_UNSIGNED_SHORT, sphere_indices); glPopMatrix(); } }

However, I receive the following error (ref: line 21 - opening of 3DSphere class):

It seems a C error rather than an OpenGL one.invalid suffix "DSphere" on integer constant

Also - where does the actual drawing take place? There is no main function here!