X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=src%2F3dengfx%2Flibs%2Flib3ds%2Fmatrix.c;fp=src%2F3dengfx%2Flibs%2Flib3ds%2Fmatrix.c;h=0000000000000000000000000000000000000000;hb=6c322d339ec9c5063c8f47117633b46e2a8eafd0;hp=e21534f07d87fff4feed76f292ed679625f630ee;hpb=787ad7856f5074db4fe805b15bfca61553895de1;p=summerhack

diff --git a/src/3dengfx/libs/lib3ds/matrix.c b/src/3dengfx/libs/lib3ds/matrix.c
deleted file mode 100644
index e21534f..0000000
--- a/src/3dengfx/libs/lib3ds/matrix.c
+++ /dev/null
@@ -1,723 +0,0 @@
-/*
- * The 3D Studio File Format Library
- * Copyright (C) 1996-2001 by J.E. Hoffmann <je-h@gmx.net>
- * All rights reserved.
- *
- * This program is  free  software;  you can redistribute it and/or modify it
- * under the terms of the  GNU Lesser General Public License  as published by 
- * the  Free Software Foundation;  either version 2.1 of the License,  or (at 
- * your option) any later version.
- *
- * This  program  is  distributed in  the  hope that it will  be useful,  but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or  FITNESS FOR A  PARTICULAR PURPOSE.  See the  GNU Lesser General Public  
- * License for more details.
- *
- * You should  have received  a copy of the GNU Lesser General Public License
- * along with  this program;  if not, write to the  Free Software Foundation,
- * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * $Id: matrix.c,v 1.10 2004/11/16 07:41:44 efalk Exp $
- */
-#define LIB3DS_EXPORT
-#include <lib3ds/matrix.h>
-#include <lib3ds/quat.h>
-#include <lib3ds/vector.h>
-#include <string.h>
-#include <math.h>
-
-
-/*!
- * \defgroup matrix Matrix Mathematics
- *
- * \author J.E. Hoffmann <je-h@gmx.net>
- */
-/*!
- * \typedef Lib3dsMatrix
- *   \ingroup matrix
- */
-
-
-/*!
- * Clear a matrix to all zeros.
- *
- * \param m Matrix to be cleared.
- *
- * \ingroup matrix
- */
-void
-lib3ds_matrix_zero(Lib3dsMatrix m)
-{
-  int i,j;
-
-  for (i=0; i<4; i++) {
-    for (j=0; j<4; j++) m[i][j]=0.0f;
-  }
-}
-
-
-/*!
- * Set a matrix to identity.
- *
- * \param m Matrix to be set.
- *
- * \ingroup matrix
- */
-void
-lib3ds_matrix_identity(Lib3dsMatrix m)
-{
-  int i,j;
-
-  for (i=0; i<4; i++) {
-    for (j=0; j<4; j++) m[i][j]=0.0;
-  }
-  for (i=0; i<4; i++) m[i][i]=1.0;
-}
-
-
-/*!
- * Copy a matrix.
- *
- * \ingroup matrix
- */
-void
-lib3ds_matrix_copy(Lib3dsMatrix dest, Lib3dsMatrix src)
-{
-  memcpy(dest, src, sizeof(Lib3dsMatrix)); 
-}
-
-
-/*!
- * Negate a matrix -- all elements negated.
- *
- * \ingroup matrix
- */
-void 
-lib3ds_matrix_neg(Lib3dsMatrix m)
-{
-  int i,j;
-
-  for (j=0; j<4; j++) {
-    for (i=0; i<4; i++) {
-      m[j][i]=-m[j][i];
-    }
-  }
-}
-
-
-/*!
- * Set all matrix elements to their absolute value.
- *
- * \ingroup matrix
- */
-void 
-lib3ds_matrix_abs(Lib3dsMatrix m)
-{
-  int i,j;
-
-  for (j=0; j<4; j++) {
-    for (i=0; i<4; i++) {
-      m[j][i]=(Lib3dsFloat)fabs(m[j][i]);
-    }
-  }
-}
-
-
-/*!
- * Transpose a matrix in place.
- *
- * \ingroup matrix
- */
-void
-lib3ds_matrix_transpose(Lib3dsMatrix m)
-{
-  int i,j;
-  Lib3dsFloat swp;
-
-  for (j=0; j<4; j++) {
-    for (i=j+1; i<4; i++) {
-      swp=m[j][i];
-      m[j][i]=m[i][j];
-      m[i][j]=swp;
-    }
-  }
-}
-
-
-/*!
- * Add two matrices.
- *
- * \ingroup matrix
- */
-void
-lib3ds_matrix_add(Lib3dsMatrix m, Lib3dsMatrix a, Lib3dsMatrix b)
-{
-  int i,j;
-
-  for (j=0; j<4; j++) {
-    for (i=0; i<4; i++) {
-      m[j][i]=a[j][i]+b[j][i];
-    }
-  }
-}
-
-
-/*!
- * Subtract two matrices.
- *
- * \param m Result.
- * \param a Addend.
- * \param b Minuend.
- *
- * \ingroup matrix
- */
-void
-lib3ds_matrix_sub(Lib3dsMatrix m, Lib3dsMatrix a, Lib3dsMatrix b)
-{
-  int i,j;
-
-  for (j=0; j<4; j++) {
-    for (i=0; i<4; i++) {
-      m[j][i]=a[j][i]-b[j][i];
-    }
-  }
-}
-
-
-/*!
- * Multiply two matrices.
- *
- * \param m Result.
- * \param a Left matrix.
- * \param b Right matrix.
- *
- * \ingroup matrix
- */
-void
-lib3ds_matrix_mul(Lib3dsMatrix m, Lib3dsMatrix a, Lib3dsMatrix b)
-{
-  int i,j,k;
-  Lib3dsFloat ab;
-
-  for (j=0; j<4; j++) {
-    for (i=0; i<4; i++) {
-      ab=0.0f;
-      for (k=0; k<4; k++) ab+=a[k][i]*b[j][k];
-      m[j][i]=ab;
-    }
-  }
-}
-
-
-/*!
- * Multiply a matrix by a scalar.
- *
- * \param m Matrix to be set.
- * \param k Scalar.
- *
- * \ingroup matrix
- */
-void
-lib3ds_matrix_scalar(Lib3dsMatrix m, Lib3dsFloat k)
-{
-  int i,j;
-
-  for (j=0; j<4; j++) {
-    for (i=0; i<4; i++) {
-      m[j][i]*=k;
-    }
-  }
-}
-
-
-static Lib3dsFloat
-det2x2(
-  Lib3dsFloat a, Lib3dsFloat b,
-  Lib3dsFloat c, Lib3dsFloat d) 
-{
-  return((a)*(d)-(b)*(c));
-}
-
-
-static Lib3dsFloat
-det3x3(
-  Lib3dsFloat a1, Lib3dsFloat a2, Lib3dsFloat a3,
-  Lib3dsFloat b1, Lib3dsFloat b2, Lib3dsFloat b3,
-  Lib3dsFloat c1, Lib3dsFloat c2, Lib3dsFloat c3)
-{
-  return(
-    a1*det2x2(b2,b3,c2,c3)-
-    b1*det2x2(a2,a3,c2,c3)+
-    c1*det2x2(a2,a3,b2,b3)
-  );
-}
-
-
-/*!
- * Find determinant of a matrix.
- *
- * \ingroup matrix
- */
-Lib3dsFloat
-lib3ds_matrix_det(Lib3dsMatrix m)
-{
-  Lib3dsFloat a1,a2,a3,a4,b1,b2,b3,b4,c1,c2,c3,c4,d1,d2,d3,d4;
-
-  a1 = m[0][0];
-  b1 = m[1][0];
-  c1 = m[2][0];
-  d1 = m[3][0];
-  a2 = m[0][1];
-  b2 = m[1][1];
-  c2 = m[2][1];
-  d2 = m[3][1];
-  a3 = m[0][2];
-  b3 = m[1][2];
-  c3 = m[2][2];
-  d3 = m[3][2];
-  a4 = m[0][3];
-  b4 = m[1][3];
-  c4 = m[2][3];
-  d4 = m[3][3];
-  return(
-    a1 * det3x3(b2, b3, b4, c2, c3, c4, d2, d3, d4)-
-    b1 * det3x3(a2, a3, a4, c2, c3, c4, d2, d3, d4)+
-    c1 * det3x3(a2, a3, a4, b2, b3, b4, d2, d3, d4)-
-    d1 * det3x3(a2, a3, a4, b2, b3, b4, c2, c3, c4)
-  );
-}
-
-
-/*!
- * Find the adjoint of a matrix.
- *
- * \ingroup matrix
- */
-void
-lib3ds_matrix_adjoint(Lib3dsMatrix m)
-{
-  Lib3dsFloat a1,a2,a3,a4,b1,b2,b3,b4,c1,c2,c3,c4,d1,d2,d3,d4;
-
-  a1 = m[0][0];
-  b1 = m[1][0];
-  c1 = m[2][0];
-  d1 = m[3][0];
-  a2 = m[0][1];
-  b2 = m[1][1];
-  c2 = m[2][1];
-  d2 = m[3][1];
-  a3 = m[0][2];
-  b3 = m[1][2];
-  c3 = m[2][2];
-  d3 = m[3][2];
-  a4 = m[0][3];
-  b4 = m[1][3];
-  c4 = m[2][3];
-  d4 = m[3][3];
-  m[0][0]=  det3x3 (b2, b3, b4, c2, c3, c4, d2, d3, d4);
-  m[0][1]= -det3x3 (a2, a3, a4, c2, c3, c4, d2, d3, d4);
-  m[0][2]=  det3x3 (a2, a3, a4, b2, b3, b4, d2, d3, d4);
-  m[0][3]= -det3x3 (a2, a3, a4, b2, b3, b4, c2, c3, c4);
-  m[1][0]= -det3x3 (b1, b3, b4, c1, c3, c4, d1, d3, d4);
-  m[1][1]=  det3x3 (a1, a3, a4, c1, c3, c4, d1, d3, d4);
-  m[1][2]= -det3x3 (a1, a3, a4, b1, b3, b4, d1, d3, d4);
-  m[1][3]=  det3x3 (a1, a3, a4, b1, b3, b4, c1, c3, c4);
-  m[2][0]=  det3x3 (b1, b2, b4, c1, c2, c4, d1, d2, d4);
-  m[2][1]= -det3x3 (a1, a2, a4, c1, c2, c4, d1, d2, d4);
-  m[2][2]=  det3x3 (a1, a2, a4, b1, b2, b4, d1, d2, d4);
-  m[2][3]= -det3x3 (a1, a2, a4, b1, b2, b4, c1, c2, c4);
-  m[3][0]= -det3x3 (b1, b2, b3, c1, c2, c3, d1, d2, d3);
-  m[3][1]=  det3x3 (a1, a2, a3, c1, c2, c3, d1, d2, d3);
-  m[3][2]= -det3x3 (a1, a2, a3, b1, b2, b3, d1, d2, d3);
-  m[3][3]=  det3x3 (a1, a2, a3, b1, b2, b3, c1, c2, c3);
-}
-
-
-/*!
- * Invert a matrix in place.
- *
- * \param m Matrix to invert.
- *
- * \return LIB3DS_TRUE on success, LIB3DS_FALSE on failure.
- * \ingroup matrix
- *
- * GGemsII, K.Wu, Fast Matrix Inversion 
- */
-Lib3dsBool
-lib3ds_matrix_inv(Lib3dsMatrix m)
-{                          
-  int i,j,k;               
-  int pvt_i[4], pvt_j[4];            /* Locations of pivot elements */
-  Lib3dsFloat pvt_val;               /* Value of current pivot element */
-  Lib3dsFloat hold;                  /* Temporary storage */
-  Lib3dsFloat determinat;            
-
-  determinat = 1.0f;
-  for (k=0; k<4; k++)  {
-    /* Locate k'th pivot element */
-    pvt_val=m[k][k];            /* Initialize for search */
-    pvt_i[k]=k;
-    pvt_j[k]=k;
-    for (i=k; i<4; i++) {
-      for (j=k; j<4; j++) {
-        if (fabs(m[i][j]) > fabs(pvt_val)) {
-          pvt_i[k]=i;
-          pvt_j[k]=j;
-          pvt_val=m[i][j];
-        }
-      }
-    }
-
-    /* Product of pivots, gives determinant when finished */
-    determinat*=pvt_val;
-    if (fabs(determinat)<LIB3DS_EPSILON) {    
-      return(LIB3DS_FALSE);  /* Matrix is singular (zero determinant) */
-    }
-
-    /* "Interchange" rows (with sign change stuff) */
-    i=pvt_i[k];
-    if (i!=k) {               /* If rows are different */
-      for (j=0; j<4; j++) {
-        hold=-m[k][j];
-        m[k][j]=m[i][j];
-        m[i][j]=hold;
-      }
-    }
-
-    /* "Interchange" columns */
-    j=pvt_j[k];
-    if (j!=k) {              /* If columns are different */
-      for (i=0; i<4; i++) {
-        hold=-m[i][k];
-        m[i][k]=m[i][j];
-        m[i][j]=hold;
-      }
-    }
-    
-    /* Divide column by minus pivot value */
-    for (i=0; i<4; i++) {
-      if (i!=k) m[i][k]/=( -pvt_val) ; 
-    }
-
-    /* Reduce the matrix */
-    for (i=0; i<4; i++) {
-      hold = m[i][k];
-      for (j=0; j<4; j++) {
-        if (i!=k && j!=k) m[i][j]+=hold*m[k][j];
-      }
-    }
-
-    /* Divide row by pivot */
-    for (j=0; j<4; j++) {
-      if (j!=k) m[k][j]/=pvt_val;
-    }
-
-    /* Replace pivot by reciprocal (at last we can touch it). */
-    m[k][k] = 1.0f/pvt_val;
-  }
-
-  /* That was most of the work, one final pass of row/column interchange */
-  /* to finish */
-  for (k=4-2; k>=0; k--) { /* Don't need to work with 1 by 1 corner*/
-    i=pvt_j[k];            /* Rows to swap correspond to pivot COLUMN */
-    if (i!=k) {            /* If rows are different */
-      for(j=0; j<4; j++) {
-        hold = m[k][j];
-        m[k][j]=-m[i][j];
-        m[i][j]=hold;
-      }
-    }
-
-    j=pvt_i[k];           /* Columns to swap correspond to pivot ROW */
-    if (j!=k)             /* If columns are different */
-    for (i=0; i<4; i++) {
-      hold=m[i][k];
-      m[i][k]=-m[i][j];
-      m[i][j]=hold;
-    }
-  }
-  return(LIB3DS_TRUE);                          
-}
-
-
-/*!
- * Apply a translation to a matrix.
- *
- * \ingroup matrix
- */
-void
-lib3ds_matrix_translate_xyz(Lib3dsMatrix m, Lib3dsFloat x, Lib3dsFloat y, Lib3dsFloat z)
-{
-  int i;
-  
-  for (i=0; i<3; i++) {
-    m[3][i]+= m[0][i]*x + m[1][i]*y + m[2][i]*z;
-  }
-}
-
-
-/*!
- * Apply a translation to a matrix.
- *
- * \ingroup matrix
- */
-void
-lib3ds_matrix_translate(Lib3dsMatrix m, Lib3dsVector t)
-{
-  int i;
-  
-  for (i=0; i<3; i++) {
-    m[3][i]+= m[0][i]*t[0] + m[1][i]*t[1] + m[2][i]*t[2];
-  }
-}
-
-
-/*!
- * Apply scale factors to a matrix.
- *
- * \ingroup matrix
- */
-void
-lib3ds_matrix_scale_xyz(Lib3dsMatrix m, Lib3dsFloat x, Lib3dsFloat y, Lib3dsFloat z)
-{
-  int i;
-
-  for (i=0; i<4; i++) {
-    m[0][i]*=x;
-    m[1][i]*=y;
-    m[2][i]*=z;
-  }
-}
-
-
-/*!
- * Apply scale factors to a matrix.
- *
- * \ingroup matrix
- */
-void
-lib3ds_matrix_scale(Lib3dsMatrix m, Lib3dsVector s)
-{
-  int i;
-
-  for (i=0; i<4; i++) {
-    m[0][i]*=s[0];
-    m[1][i]*=s[1];
-    m[2][i]*=s[2];
-  }
-}
-
-
-/*!
- * Apply a rotation about the x axis to a matrix.
- *
- * \ingroup matrix
- */
-void
-lib3ds_matrix_rotate_x(Lib3dsMatrix m, Lib3dsFloat phi)
-{
-  Lib3dsFloat SinPhi,CosPhi;
-  Lib3dsFloat a1[4],a2[4];
-
-  SinPhi=(Lib3dsFloat)sin(phi);
-  CosPhi=(Lib3dsFloat)cos(phi);
-  memcpy(a1,m[1],4*sizeof(Lib3dsFloat));
-  memcpy(a2,m[2],4*sizeof(Lib3dsFloat));
-  m[1][0]=CosPhi*a1[0]+SinPhi*a2[0];
-  m[1][1]=CosPhi*a1[1]+SinPhi*a2[1];
-  m[1][2]=CosPhi*a1[2]+SinPhi*a2[2];
-  m[1][3]=CosPhi*a1[3]+SinPhi*a2[3];
-  m[2][0]=-SinPhi*a1[0]+CosPhi*a2[0];
-  m[2][1]=-SinPhi*a1[1]+CosPhi*a2[1];
-  m[2][2]=-SinPhi*a1[2]+CosPhi*a2[2];
-  m[2][3]=-SinPhi*a1[3]+CosPhi*a2[3];
-}
-
-
-/*!
- * Apply a rotation about the y axis to a matrix.
- *
- * \ingroup matrix
- */
-void
-lib3ds_matrix_rotate_y(Lib3dsMatrix m, Lib3dsFloat phi)
-{
-  Lib3dsFloat SinPhi,CosPhi;
-  Lib3dsFloat a0[4],a2[4];
-
-  SinPhi=(Lib3dsFloat)sin(phi);
-  CosPhi=(Lib3dsFloat)cos(phi);
-  memcpy(a0,m[0],4*sizeof(Lib3dsFloat));
-  memcpy(a2,m[2],4*sizeof(Lib3dsFloat));
-  m[0][0]=CosPhi*a0[0]-SinPhi*a2[0];
-  m[0][1]=CosPhi*a0[1]-SinPhi*a2[1];
-  m[0][2]=CosPhi*a0[2]-SinPhi*a2[2];
-  m[0][3]=CosPhi*a0[3]-SinPhi*a2[3];
-  m[2][0]=SinPhi*a0[0]+CosPhi*a2[0];
-  m[2][1]=SinPhi*a0[1]+CosPhi*a2[1];
-  m[2][2]=SinPhi*a0[2]+CosPhi*a2[2];
-  m[2][3]=SinPhi*a0[3]+CosPhi*a2[3];
-}
-
-
-/*!
- * Apply a rotation about the z axis to a matrix.
- *
- * \ingroup matrix
- */
-void
-lib3ds_matrix_rotate_z(Lib3dsMatrix m, Lib3dsFloat phi)
-{
-  Lib3dsFloat SinPhi,CosPhi;
-  Lib3dsFloat a0[4],a1[4];
-  
-  SinPhi=(Lib3dsFloat)sin(phi);
-  CosPhi=(Lib3dsFloat)cos(phi);
-  memcpy(a0,m[0],4*sizeof(Lib3dsFloat));
-  memcpy(a1,m[1],4*sizeof(Lib3dsFloat));
-  m[0][0]=CosPhi*a0[0]+SinPhi*a1[0];
-  m[0][1]=CosPhi*a0[1]+SinPhi*a1[1];
-  m[0][2]=CosPhi*a0[2]+SinPhi*a1[2];
-  m[0][3]=CosPhi*a0[3]+SinPhi*a1[3];
-  m[1][0]=-SinPhi*a0[0]+CosPhi*a1[0];
-  m[1][1]=-SinPhi*a0[1]+CosPhi*a1[1];
-  m[1][2]=-SinPhi*a0[2]+CosPhi*a1[2];
-  m[1][3]=-SinPhi*a0[3]+CosPhi*a1[3];
-}
-
-
-/*!
- * Apply a rotation about an arbitrary axis to a matrix.
- *
- * \ingroup matrix
- */
-void
-lib3ds_matrix_rotate(Lib3dsMatrix m, Lib3dsQuat q)
-{
-  Lib3dsFloat s,xs,ys,zs,wx,wy,wz,xx,xy,xz,yy,yz,zz,l;
-  Lib3dsMatrix a,b;
-
-  lib3ds_matrix_copy(a, m);
-
-  l=q[0]*q[0] + q[1]*q[1] + q[2]*q[2] + q[3]*q[3];
-  if (fabs(l)<LIB3DS_EPSILON) {
-    s=1.0f;
-  }
-  else {
-    s=2.0f/l;
-  }
-
-  xs = q[0] * s;   ys = q[1] * s;  zs = q[2] * s;
-  wx = q[3] * xs;  wy = q[3] * ys; wz = q[3] * zs;
-  xx = q[0] * xs;  xy = q[0] * ys; xz = q[0] * zs;
-  yy = q[1] * ys;  yz = q[1] * zs; zz = q[2] * zs;
-
-  b[0][0]=1.0f - (yy +zz);
-  b[1][0]=xy - wz;
-  b[2][0]=xz + wy;
-  b[0][1]=xy + wz;
-  b[1][1]=1.0f - (xx +zz);
-  b[2][1]=yz - wx;
-  b[0][2]=xz - wy;
-  b[1][2]=yz + wx;
-  b[2][2]=1.0f - (xx + yy);
-  b[3][0]=b[3][1]=b[3][2]=b[0][3]=b[1][3]=b[2][3]=0.0f;
-  b[3][3]=1.0f;
-
-  lib3ds_matrix_mul(m,a,b);
-}
-
-
-/*!
- * Apply a rotation about an arbitrary axis to a matrix.
- *
- * \ingroup matrix
- */
-void
-lib3ds_matrix_rotate_axis(Lib3dsMatrix m, Lib3dsVector axis, Lib3dsFloat angle)
-{
-  Lib3dsQuat q;
-  
-  lib3ds_quat_axis_angle(q,axis,angle);
-  lib3ds_matrix_rotate(m,q);
-}
-
-
-/*!
- * Compute a camera matrix based on position, target and roll.
- *
- * Generates a translate/rotate matrix that maps world coordinates
- * to camera coordinates.  Resulting matrix does not include perspective
- * transform.
- *
- * \param matrix Destination matrix.
- * \param pos Camera position
- * \param tgt Camera target
- * \param roll Roll angle
- *
- * \ingroup matrix
- */
-void
-lib3ds_matrix_camera(Lib3dsMatrix matrix, Lib3dsVector pos,
-  Lib3dsVector tgt, Lib3dsFloat roll)
-{
-  Lib3dsMatrix M,R;
-  Lib3dsVector x, y, z;
-
-  lib3ds_vector_sub(y, tgt, pos);
-  lib3ds_vector_normalize(y);
-
-  if (y[0] != 0. || y[1] != 0) {
-    z[0] = 0;
-    z[1] = 0;
-    z[2] = 1.0;
-  }
-  else {	/* Special case:  looking straight up or down z axis */
-    z[0] = -1.0;
-    z[1] = 0;
-    z[2] = 0;
-  }
-
-  lib3ds_vector_cross(x, y, z);
-  lib3ds_vector_cross(z, x, y);
-  lib3ds_vector_normalize(x);
-  lib3ds_vector_normalize(z);
-
-  lib3ds_matrix_identity(M);
-  M[0][0] = x[0];
-  M[1][0] = x[1];
-  M[2][0] = x[2];
-  M[0][1] = y[0];
-  M[1][1] = y[1];
-  M[2][1] = y[2];
-  M[0][2] = z[0];
-  M[1][2] = z[1];
-  M[2][2] = z[2];
-
-  lib3ds_matrix_identity(R);
-  lib3ds_matrix_rotate_y(R, roll);
-  lib3ds_matrix_mul(matrix, R,M);
-  lib3ds_matrix_translate_xyz(matrix, -pos[0],-pos[1],-pos[2]);
-}
-
-
-/*!
- * \ingroup matrix
- */
-void
-lib3ds_matrix_dump(Lib3dsMatrix matrix)
-{
-  int i,j;
-
-  for (i=0; i<4; ++i) {
-    for (j=0; j<4; ++j) {
-      printf("%f ", matrix[j][i]);
-    }
-    printf("\n");
-  }
-}
-
-
-
-
-