83 static INLINE void matrix_init(struct matrix *mat,  in matrix_init()  argument
86    memcpy(mat->m, val, sizeof(VGfloat) * 9);  in matrix_init()
89 static INLINE void matrix_inits(struct matrix *mat,  in matrix_inits()  argument
94    mat->m[0] = m11; mat->m[1] = m12; mat->m[2] = m13;  in matrix_inits()
95    mat->m[3] = m21; mat->m[4] = m22; mat->m[5] = m23;  in matrix_inits()
96    mat->m[6] = m31; mat->m[7] = m32; mat->m[8] = m33;  in matrix_inits()
152 static INLINE void matrix_map_point(struct matrix *mat,  in matrix_map_point()  argument
160    *out_x = mat->m[0]*tmp_x + mat->m[3]*tmp_y + mat->m[6];  in matrix_map_point()
161    *out_y = mat->m[1]*tmp_x + mat->m[4]*tmp_y + mat->m[7];  in matrix_map_point()
162    if (!matrix_is_affine(mat)) {  in matrix_map_point()
163       VGfloat w = 1/(mat->m[2]*tmp_x + mat->m[5]*tmp_y + mat->m[8]);  in matrix_map_point()
212    struct matrix mat;  in matrix_rotate()  local
230       matrix_load_identity(&mat);  in matrix_rotate()
231       mat.m[0] =  cos_val;   mat.m[1] =  sin_val;  in matrix_rotate()
232       mat.m[3] = -sin_val;   mat.m[4] =  cos_val;  in matrix_rotate()
234       matrix_mult(dst, &mat);  in matrix_rotate()
246 static INLINE VGfloat matrix_determinant(struct matrix *mat)  in matrix_determinant()  argument
248    return mat->m[0]*(mat->m[8]*mat->m[4]-mat->m[7]*mat->m[5]) -  in matrix_determinant()
249       mat->m[3]*(mat->m[8]*mat->m[1]-mat->m[7]*mat->m[2])+  in matrix_determinant()
250       mat->m[6]*(mat->m[5]*mat->m[1]-mat->m[4]*mat->m[2]);  in matrix_determinant()
254 static INLINE void matrix_adjoint(struct matrix *mat)  in matrix_adjoint()  argument
257     h[0] = mat->m[4]*mat->m[8] - mat->m[5]*mat->m[7];  in matrix_adjoint()
258     h[3] = mat->m[5]*mat->m[6] - mat->m[3]*mat->m[8];  in matrix_adjoint()
259     h[6] = mat->m[3]*mat->m[7] - mat->m[4]*mat->m[6];  in matrix_adjoint()
260     h[1] = mat->m[2]*mat->m[7] - mat->m[1]*mat->m[8];  in matrix_adjoint()
261     h[4] = mat->m[0]*mat->m[8] - mat->m[2]*mat->m[6];  in matrix_adjoint()
262     h[7] = mat->m[1]*mat->m[6] - mat->m[0]*mat->m[7];  in matrix_adjoint()
263     h[2] = mat->m[1]*mat->m[5] - mat->m[2]*mat->m[4];  in matrix_adjoint()
264     h[5] = mat->m[2]*mat->m[3] - mat->m[0]*mat->m[5];  in matrix_adjoint()
265     h[8] = mat->m[0]*mat->m[4] - mat->m[1]*mat->m[3];  in matrix_adjoint()
268     memcpy(mat->m, h, sizeof(VGfloat) * 9);  in matrix_adjoint()
271 static INLINE void matrix_divs(struct matrix *mat,  in matrix_divs()  argument
274    mat->m[0] /= s;  in matrix_divs()
275    mat->m[1] /= s;  in matrix_divs()
276    mat->m[2] /= s;  in matrix_divs()
277    mat->m[3] /= s;  in matrix_divs()
278    mat->m[4] /= s;  in matrix_divs()
279    mat->m[5] /= s;  in matrix_divs()
280    mat->m[6] /= s;  in matrix_divs()
281    mat->m[7] /= s;  in matrix_divs()
282    mat->m[8] /= s;  in matrix_divs()
285 static INLINE VGboolean matrix_invert(struct matrix *mat)  in matrix_invert()  argument
287    VGfloat det = matrix_determinant(mat);  in matrix_invert()
292    matrix_adjoint(mat);  in matrix_invert()
293    matrix_divs(mat, det);  in matrix_invert()
297 static INLINE VGboolean matrix_is_invertible(struct matrix *mat)  in matrix_is_invertible()  argument
299    return !floatIsZero(matrix_determinant(mat));  in matrix_is_invertible()
307                                               struct matrix *mat)  in matrix_square_to_quad()  argument
314       matrix_inits(mat,  in matrix_square_to_quad()
343       matrix_inits(mat,  in matrix_square_to_quad()
356                                               struct matrix *mat)  in matrix_quad_to_square()  argument
360                               mat))  in matrix_quad_to_square()
363     return matrix_invert(mat);  in matrix_quad_to_square()
375                                             struct matrix *mat)  in matrix_quad_to_quad()  argument
381                               mat))  in matrix_quad_to_quad()
389    matrix_mult(mat, &sqr_to_qd);  in matrix_quad_to_quad()