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/* RCSid: $Id: vect.h,v 1.3 2003/06/07 01:11:17 schorsch Exp $ */
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#ifndef _MGF_VECT_H_
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#define _MGF_VECT_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdio.h>
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typedef float Vector[3];
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#define X 0
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#define Y 1
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#define Z 2
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/* Transformation matrix */
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typedef float Matrix[4][4];
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void vect_init (Vector v, float x, float y, float z);
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void vect_copy (Vector v1, Vector v2);
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int vect_equal (Vector v1, Vector v2);
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void vect_add (Vector v1, Vector v2, Vector v3);
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void vect_sub (Vector v1, Vector v2, Vector v3);
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void vect_scale (Vector v1, Vector v2, float k);
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float vect_mag (Vector v);
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void vect_normalize (Vector v);
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float vect_dot (Vector v1, Vector v2);
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void vect_cross (Vector v1, Vector v2, Vector v3);
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void vect_min (Vector v1, Vector v2, Vector v3);
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void vect_max (Vector v1, Vector v2, Vector v3);
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float vect_angle (Vector v1, Vector v2);
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void vect_print (FILE *f, Vector v, int dec, char sep);
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void vect_rotate (Vector v1, Vector v2, int axis, float angle);
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void vect_axis_rotate (Vector v1, Vector v2, Vector axis, float angle);
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void mat_identity (Matrix mat);
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void mat_copy (Matrix mat1, Matrix mat2);
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void mat_rotate (Matrix mat1, Matrix mat2, int axis, float angle);
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void mat_axis_rotate (Matrix mat1, Matrix mat2, Vector axis, float angle);
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void mat_mult (Matrix mat1, Matrix mat2, Matrix mat3);
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void vect_transform (Vector v1, Vector v2, Matrix mat);
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void mat_decode (Matrix mat, Vector scale, Vector shear, Vector rotate, Vector
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transl);
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float mat_inv (Matrix mat1, Matrix mat2);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _MGF_VECT_H_ */
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