native_client_sdk/src/examples/hello_world_instance3d/matrix.h - Issue 15011003: ppapi_simple

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Side by Side Diff: native_client_sdk/src/examples/hello_world_instance3d/matrix.h

Issue 15011003: ppapi_simple (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src

Patch Set: Copyright Created 7 years, 6 months ago

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1 #ifndef EXAMPLES_HELLO_WORLD_GLES_MATRIX_H

2 #define EXAMPLES_HELLO_WORLD_GLES_MATRIX_H

3

4 /* Copyright (c) 2012 The Chromium Authors. All rights reserved.

5 * Use of this source code is governed by a BSD-style license that can be

6 * found in the LICENSE file.

7 */

8

9 /** @file matrix.cc

10 * Implements simple matrix manipulation functions.

11 */

12

13 //-----------------------------------------------------------------------------

14 #define _USE_MATH_DEFINES 1

15 #include <limits.h>

16 #include <math.h>

17 #include <GLES2/gl2.h>

18

19 typedef GLfloat Matrix_t[16];

20

21 /// Since GLES2 doesn't have all the nifty matrix transform functions that GL

22 /// has, we emulate some of them here for the sake of sanity from:

23 /// http://www.opengl.org/wiki/GluPerspective_code

24 void glhFrustumf2(Matrix_t mat,

25 GLfloat left,

26 GLfloat right,

27 GLfloat bottom,

28 GLfloat top,

29 GLfloat znear,

30 GLfloat zfar);

31

32 void glhPerspectivef2(Matrix_t mat,

33 GLfloat fovyInDegrees,

34 GLfloat aspectRatio,

35 GLfloat znear,

36 GLfloat zfar);

37

38 void identity_matrix(Matrix_t mat);

39 void multiply_matrix(const Matrix_t a, const Matrix_t b, Matrix_t mat);

40 void rotate_matrix(GLfloat x_deg, GLfloat y_deg, GLfloat z_deg, Matrix_t mat);

41 void translate_matrix(GLfloat x, GLfloat y, GLfloat z, Matrix_t mat);

42

43 #endif // EXAMPLES_HELLO_WORLD_GLES_MATRIX_H

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