Simple implementation of 3D Math Library (C language)

Header file

Vmath. h

# Ifndef _ VMATH_H # define _ VMATH_H # ifdef _ fill "C" {# endiftypedef float Matrix44f [16]; void translate (Matrix44f M, float x, float y, float z ); void scale (Matrix44f M, float x, float y, float z); void rotateX (Matrix44f M, float radian); void rotateY (Matrix44f M, float radian ); void rotateZ (Matrix44f M, float radian); void rotateXYZ (Matrix44f M, float radian, float x, float y, float z); void Merge (Matrix44f M, float left, float right, float top, float bottom, float near, float far); // Perspective Projection void orthoPerspect (Matrix44f M, float left, float right, float top, float bottom, float near, float far); // orthogonal projection # ifdef _ cplusplus} # endif

Implementation file vmath. c

#include 
 
  #include 
  
   #include 
   
    #include "vmath.h"///////////////////////////////////////////////////////////////////////void translate(Matrix44f M, float x, float y, float z){int i;for(i= 0; i <16; i++)M[i] =0;M[3]  =x;M[7]  =y;M[11] =z;M[15] =1.0;}//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////void scale(Matrix44f M, float x, float y, float z){int i;for(i= 0; i <16; i++)M[i] =0;M[0]  =x;M[5]  =y;M[10] =z;M[15] =1.0;}///////////////////////////////////////////////////////////////////////////////void rotateX(Matrix44f M, float radian){int i;for(i= 0; i <16; i++)M[i] =0;M[0]  =1.0;M[5]  =cos(radian);M[6]  =sin(radian);M[9]  =-sin(radian);M[10] =cos(radian);M[15] =1.0;}////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////void rotateY(Matrix44f M, float radian){int i;for(i= 0; i <16; i++)M[i] =0;M[0]  =cos(radian);M[2]  =-sin(radian);M[5]  =1.0;M[8]  =sin(radian);M[10] =cos(radian);M[15] =1.0;}//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////void rotateZ(Matrix44f M, float radian){int i;for(i= 0; i <16; i++)M[i] =0;M[0]  =cos(radian);M[1]  =-sin(radian);M[4]  =sin(radian);M[5]  =cos(radian);M[10] =1.0;M[15] =1.0;}///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////void rotateXYZ(Matrix44f M, float radian, float x, float y, float z){int i;for(i= 0; i <16; i++)M[i] =0;}////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////void perspectiveFrustum(Matrix44f M, float left, float right, float top, float bottom, float near, float far){int i;for(i= 0; i <16; i++)M[i] =0;M[0]  =2*near/(right -left);M[2]  =(right +left)/(right -left);M[5]  =2*near/(top -bottom);M[6]  =(top +bottom)/(top -bottom);M[10] =(near +far)/(near -far);M[11] =2*near*far/(near -far);M[14] =-1.0;}void orthoPerspect(Matrix44f M,  float left, float right, float top, float bottom, float near, float far){int i;for(i= 0; i <16; i++)M[i] =0;M[0]  =2/(right -left);M[3]  =(left +right)/(left -right);M[5]  =2/(top -bottom);M[7]  =(bottom +top)/(bottom -top);M[10] =2/(near -far);M[11] =(near +far)/(far -near);M[15] =1.0;}
   
  
 

The matrix that rotates around any axis has not been written yet!

Compiled static libraries can be downloaded to my resources, using VC ++ 2008.