50 lines
1.3 KiB
C
50 lines
1.3 KiB
C
/*
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* Copyright 2014 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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// EXPERIMENTAL EXPERIMENTAL EXPERIMENTAL EXPERIMENTAL
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// DO NOT USE -- FOR INTERNAL TESTING ONLY
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#ifndef sk_matrix_DEFINED
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#define sk_matrix_DEFINED
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#include "sk_types.h"
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SK_C_PLUS_PLUS_BEGIN_GUARD
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/** Set the matrix to identity */
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void sk_matrix_set_identity(sk_matrix_t*);
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/** Set the matrix to translate by (tx, ty). */
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void sk_matrix_set_translate(sk_matrix_t*, float tx, float ty);
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/**
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Preconcats the matrix with the specified translation.
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M' = M * T(dx, dy)
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*/
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void sk_matrix_pre_translate(sk_matrix_t*, float tx, float ty);
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/**
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Postconcats the matrix with the specified translation.
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M' = T(dx, dy) * M
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*/
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void sk_matrix_post_translate(sk_matrix_t*, float tx, float ty);
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/** Set the matrix to scale by sx and sy. */
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void sk_matrix_set_scale(sk_matrix_t*, float sx, float sy);
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/**
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Preconcats the matrix with the specified scale.
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M' = M * S(sx, sy)
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*/
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void sk_matrix_pre_scale(sk_matrix_t*, float sx, float sy);
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/**
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Postconcats the matrix with the specified scale.
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M' = S(sx, sy) * M
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*/
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void sk_matrix_post_scale(sk_matrix_t*, float sx, float sy);
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SK_C_PLUS_PLUS_END_GUARD
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#endif
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