diff options
author | Omar Emara <mail@OmarEmara.dev> | 2022-09-09 14:15:01 +0300 |
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committer | Omar Emara <mail@OmarEmara.dev> | 2022-09-09 14:15:01 +0300 |
commit | ac66a819c14265ee3e0f48e4cb54b6c10b7fb064 (patch) | |
tree | 327467ab316792461f11ecf242a58466596dfccc /source/blender/blenlib | |
parent | 77a4bb02cc99bfd581c6bb9e35ca3fe53389915e (diff) |
Realtime Compositor: Implement pixelate node
This patch implements the pixelate node for the realtime compositor.
Differential Revision: https://developer.blender.org/D15662
Reviewed By: Clement Foucault
Diffstat (limited to 'source/blender/blenlib')
-rw-r--r-- | source/blender/blenlib/BLI_float3x3.hh | 16 | ||||
-rw-r--r-- | source/blender/blenlib/BLI_math_matrix.h | 2 | ||||
-rw-r--r-- | source/blender/blenlib/intern/math_matrix.c | 6 | ||||
-rw-r--r-- | source/blender/blenlib/tests/BLI_float3x3_test.cc | 16 |
4 files changed, 40 insertions, 0 deletions
diff --git a/source/blender/blenlib/BLI_float3x3.hh b/source/blender/blenlib/BLI_float3x3.hh index 6a9e7dd04f0..178973c155d 100644 --- a/source/blender/blenlib/BLI_float3x3.hh +++ b/source/blender/blenlib/BLI_float3x3.hh @@ -63,6 +63,15 @@ struct float3x3 { return result; } + static float3x3 from_scale(const float2 scale) + { + float3x3 result = zero(); + result.values[0][0] = scale.x; + result.values[1][1] = scale.y; + result.values[2][2] = 1.0f; + return result; + } + static float3x3 from_translation_rotation_scale(const float2 translation, float rotation, const float2 scale) @@ -190,6 +199,13 @@ struct float3x3 { return result; } + float2 scale_2d() const + { + float2 scale; + mat3_to_size_2d(scale, values); + return scale; + } + friend bool operator==(const float3x3 &a, const float3x3 &b) { return equals_m3m3(a.values, b.values); diff --git a/source/blender/blenlib/BLI_math_matrix.h b/source/blender/blenlib/BLI_math_matrix.h index 467e6db4805..19943614881 100644 --- a/source/blender/blenlib/BLI_math_matrix.h +++ b/source/blender/blenlib/BLI_math_matrix.h @@ -410,6 +410,8 @@ float mat4_to_xy_scale(const float mat[4][4]); void size_to_mat3(float R[3][3], const float size[3]); void size_to_mat4(float R[4][4], const float size[3]); +/** Return 2D size assuming the given matrix is a 2D affine matrix. */ +void mat3_to_size_2d(float size[2], const float M[3][3]); void mat3_to_size(float size[3], const float M[3][3]); void mat4_to_size(float size[3], const float M[4][4]); diff --git a/source/blender/blenlib/intern/math_matrix.c b/source/blender/blenlib/intern/math_matrix.c index e96b12033a9..221ae84e74d 100644 --- a/source/blender/blenlib/intern/math_matrix.c +++ b/source/blender/blenlib/intern/math_matrix.c @@ -2127,6 +2127,12 @@ void size_to_mat4(float R[4][4], const float size[3]) R[3][3] = 1.0f; } +void mat3_to_size_2d(float size[2], const float M[3][3]) +{ + size[0] = len_v2(M[0]); + size[1] = len_v2(M[1]); +} + void mat3_to_size(float size[3], const float M[3][3]) { size[0] = len_v3(M[0]); diff --git a/source/blender/blenlib/tests/BLI_float3x3_test.cc b/source/blender/blenlib/tests/BLI_float3x3_test.cc index d22993ee69e..cd823b6e368 100644 --- a/source/blender/blenlib/tests/BLI_float3x3_test.cc +++ b/source/blender/blenlib/tests/BLI_float3x3_test.cc @@ -34,6 +34,15 @@ TEST(float3x3, Rotation) EXPECT_FLOAT_EQ(result[1], 1.0f); } +TEST(float3x3, Scale) +{ + float2 point(1.0f, 2.0f); + float3x3 transformation = float3x3::from_scale(float2(2.0f, 3.0f)); + float2 result = transformation * point; + EXPECT_FLOAT_EQ(result[0], 2.0f); + EXPECT_FLOAT_EQ(result[1], 6.0f); +} + TEST(float3x3, TranslationRotationScale) { float2 point(1.0f, 2.0f); @@ -116,4 +125,11 @@ TEST(float3x3, Origin) EXPECT_FLOAT_EQ(result[1], 3.0f); } +TEST(float3x3, GetScale2D) +{ + float2 scale(2.0f, 3.0f); + float3x3 transformation = float3x3::from_scale(scale); + EXPECT_EQ(scale, transformation.scale_2d()); +} + } // namespace blender::tests |