Removed all GLUT dependencies!
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de11419338
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@ -23,12 +23,14 @@
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/****************************************************************************
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History
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$Log: not supported by cvs2svn $
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Revision 1.11 2006/03/29 07:54:03 cignoni
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Wrong matrix type in cone (thx Maarten)
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****************************************************************************/
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#ifndef __VCG_GLADDONS
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#define __VCG_GLADDONS
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#include <GL/glut.h>
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#include <wrap/gl/math.h>
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#include <wrap/gl/space.h>
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#include <vcg/space/point3.h>
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@ -36,7 +38,7 @@ $Log: not supported by cvs2svn $
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namespace vcg
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{
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#include "gl_geometry.h"
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/** Class Add_Ons.
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This is class draw 3d icons on the screen
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*/
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@ -0,0 +1,221 @@
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/* Portion of this file were more or less adapted from
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* freeglut_geometry.c
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*
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* Copyright (c) 1999-2000 Pawel W. Olszta. All Rights Reserved.
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* that was Written by Pawel W. Olszta, <olszta@sourceforge.net>
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*/
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#include<stdlib.h>
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#include<math.h>
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/*
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* Compute lookup table of cos and sin values forming a cirle
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*
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* Notes:
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* It is the responsibility of the caller to free these tables
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* The size of the table is (n+1) to form a connected loop
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* The last entry is exactly the same as the first
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* The sign of n can be flipped to get the reverse loop
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*/
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static void fghCircleTable(double **sint,double **cost,const int n)
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{
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int i;
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/* Table size, the sign of n flips the circle direction */
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const int size = abs(n);
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/* Determine the angle between samples */
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const double angle = 2*M_PI/(double)( ( n == 0 ) ? 1 : n );
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/* Allocate memory for n samples, plus duplicate of first entry at the end */
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*sint = (double *) calloc(sizeof(double), size+1);
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*cost = (double *) calloc(sizeof(double), size+1);
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/* Bail out if memory allocation fails, fgError never returns */
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if (!(*sint) || !(*cost))
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{
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free(*sint);
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free(*cost);
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abort(); //fgError("Failed to allocate memory in fghCircleTable");
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}
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/* Compute cos and sin around the circle */
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(*sint)[0] = 0.0;
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(*cost)[0] = 1.0;
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for (i=1; i<size; i++)
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{
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(*sint)[i] = sin(angle*i);
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(*cost)[i] = cos(angle*i);
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}
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/* Last sample is duplicate of the first */
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(*sint)[size] = (*sint)[0];
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(*cost)[size] = (*cost)[0];
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}
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/*
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* Draws a solid sphere
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*/
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void glutSolidSphere(GLdouble radius, GLint slices, GLint stacks)
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{
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int i,j;
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/* Adjust z and radius as stacks are drawn. */
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double z0,z1;
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double r0,r1;
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/* Pre-computed circle */
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double *sint1,*cost1;
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double *sint2,*cost2;
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// FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSolidSphere" );
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fghCircleTable(&sint1,&cost1,-slices);
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fghCircleTable(&sint2,&cost2,stacks*2);
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/* The top stack is covered with a triangle fan */
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z0 = 1.0;
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z1 = cost2[(stacks>0)?1:0];
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r0 = 0.0;
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r1 = sint2[(stacks>0)?1:0];
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glBegin(GL_TRIANGLE_FAN);
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glNormal3d(0,0,1);
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glVertex3d(0,0,radius);
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for (j=slices; j>=0; j--)
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{
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glNormal3d(cost1[j]*r1, sint1[j]*r1, z1 );
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glVertex3d(cost1[j]*r1*radius, sint1[j]*r1*radius, z1*radius);
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}
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glEnd();
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/* Cover each stack with a quad strip, except the top and bottom stacks */
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for( i=1; i<stacks-1; i++ )
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{
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z0 = z1; z1 = cost2[i+1];
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r0 = r1; r1 = sint2[i+1];
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glBegin(GL_QUAD_STRIP);
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for(j=0; j<=slices; j++)
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{
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glNormal3d(cost1[j]*r1, sint1[j]*r1, z1 );
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glVertex3d(cost1[j]*r1*radius, sint1[j]*r1*radius, z1*radius);
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glNormal3d(cost1[j]*r0, sint1[j]*r0, z0 );
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glVertex3d(cost1[j]*r0*radius, sint1[j]*r0*radius, z0*radius);
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}
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glEnd();
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}
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/* The bottom stack is covered with a triangle fan */
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z0 = z1;
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r0 = r1;
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glBegin(GL_TRIANGLE_FAN);
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glNormal3d(0,0,-1);
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glVertex3d(0,0,-radius);
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for (j=0; j<=slices; j++)
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{
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glNormal3d(cost1[j]*r0, sint1[j]*r0, z0 );
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glVertex3d(cost1[j]*r0*radius, sint1[j]*r0*radius, z0*radius);
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}
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glEnd();
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/* Release sin and cos tables */
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free(sint1);
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free(cost1);
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free(sint2);
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free(cost2);
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}
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/*
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* Draws a wire sphere
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*/
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void glutWireSphere(GLdouble radius, GLint slices, GLint stacks)
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{
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int i,j;
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/* Adjust z and radius as stacks and slices are drawn. */
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double r;
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double x,y,z;
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/* Pre-computed circle */
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double *sint1,*cost1;
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double *sint2,*cost2;
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//FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutWireSphere" );
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fghCircleTable(&sint1,&cost1,-slices );
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fghCircleTable(&sint2,&cost2, stacks*2);
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/* Draw a line loop for each stack */
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for (i=1; i<stacks; i++)
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{
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z = cost2[i];
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r = sint2[i];
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glBegin(GL_LINE_LOOP);
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for(j=0; j<=slices; j++)
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{
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x = cost1[j];
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y = sint1[j];
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glNormal3d(x,y,z);
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glVertex3d(x*r*radius,y*r*radius,z*radius);
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}
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glEnd();
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}
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/* Draw a line loop for each slice */
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for (i=0; i<slices; i++)
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{
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glBegin(GL_LINE_STRIP);
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for(j=0; j<=stacks; j++)
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{
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x = cost1[i]*sint2[j];
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y = sint1[i]*sint2[j];
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z = cost2[j];
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glNormal3d(x,y,z);
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glVertex3d(x*radius,y*radius,z*radius);
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}
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glEnd();
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}
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/* Release sin and cos tables */
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free(sint1);
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free(cost1);
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free(sint2);
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free(cost2);
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}
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