added matrix code

[csgray] / src / matrix.h

diff --git a/src/matrix.h b/src/matrix.h
new file mode 100644 (file)
index 0000000..193fc39
--- /dev/null
+++ b/src/matrix.h
@@ -0,0 +1,52 @@
+#ifndef MATRIX_H_
+#define MATRIX_H_
+
+#include <stdio.h>
+
+void mat4_identity(float *m);
+void mat4_copy(float *dest, float *src);
+void mat4_mul(float *dest, float *a, float *b);
+
+void mat4_xform3(float *vdest, float *m, float *v);
+void mat4_xform4(float *vdest, float *m, float *v);
+
+float *mat4_row(float *m, int row);
+float mat4_elem(float *m, int row, int col);
+
+void mat4_upper3x3(float *m);
+
+void mat4_transpose(float *m);
+int mat4_inverse(float *m);
+
+void mat4_translation(float *m, float x, float y, float z);
+void mat4_rotation_x(float *m, float angle);
+void mat4_rotation_y(float *m, float angle);
+void mat4_rotation_z(float *m, float angle);
+void mat4_rotation(float *m, float angle, float x, float y, float z);
+void mat4_scaling(float *m, float sx, float sy, float sz);
+
+void mat4_translate(float *m, float x, float y, float z);
+void mat4_rotate_x(float *m, float angle);
+void mat4_rotate_y(float *m, float angle);
+void mat4_rotate_z(float *m, float angle);
+void mat4_rotate(float *m, float angle, float x, float y, float z);
+void mat4_scale(float *m, float sx, float sy, float sz);
+
+void mat4_pre_translate(float *m, float x, float y, float z);
+void mat4_pre_rotate_x(float *m, float angle);
+void mat4_pre_rotate_y(float *m, float angle);
+void mat4_pre_rotate_z(float *m, float angle);
+void mat4_pre_rotate(float *m, float angle, float x, float y, float z);
+void mat4_pre_scale(float *m, float sx, float sy, float sz);
+
+void mat4_lookat(float *m, float x, float y, float z, float tx, float ty, float tz, float ux, float uy, float uz);
+void mat4_inv_lookat(float *m, float x, float y, float z, float tx, float ty, float tz, float ux, float uy, float uz);
+void mat4_ortho(float *m, float left, float right, float bottom, float top, float znear, float zfar);
+void mat4_frustum(float *m, float *left, float right, float bottom, float top, float znear, float zfar);
+void mat4_perspective(float *m, float fov, float aspect, float znear, float zfar);
+
+void mat4_mirror(float *m, float a, float b, float c, float d);
+
+void mat4_print(float *m, FILE *fp);
+
+#endif /* MATRIX_H_ */