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Add HMM_Transpose

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Ben Visness
2016-08-30 18:53:53 -05:00
parent 90198604b8
commit 2ea471b3ce
2 changed files with 55 additions and 0 deletions
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20
HandmadeMath.h
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@@ -393,6 +393,8 @@ HMMDEF hmm_mat4 HMM_MultiplyMat4f(hmm_mat4 Matrix, float Scalar);
HMMDEF hmm_vec4 HMM_MultiplyMat4ByVec4(hmm_mat4 Matrix, hmm_vec4 Vector);
HMMDEF hmm_mat4 HMM_DivideMat4f(hmm_mat4 Matrix, float Scalar);
HMMDEF hmm_mat4 HMM_Transpose(hmm_mat4 Matrix);
HMMDEF hmm_mat4 HMM_Orthographic(float Left, float Right, float Bottom, float Top, float Near, float Far);
HMMDEF hmm_mat4 HMM_Perspective(float FOV, float AspectRatio, float Near, float Far);
HMMDEF hmm_mat4 HMM_Translate(hmm_vec3 Translation);
@@ -1135,6 +1137,24 @@ HMM_DivideMat4f(hmm_mat4 Matrix, float Scalar)
return (Result);
}
hmm_mat4
HMM_Transpose(hmm_mat4 Matrix)
{
hmm_mat4 Result = HMM_Mat4();
int Columns;
for(Columns = 0; Columns < 4; ++Columns)
{
int Rows;
for(Rows = 0; Rows < 4; ++Rows)
{
Result.Elements[Rows][Columns] = Matrix.Elements[Columns][Rows];
}
}
return (Result);
}
hmm_mat4
HMM_Orthographic(float Left, float Right, float Bottom, float Top, float Near, float Far)
{

35
test/hmm_test.cpp
View File

@@ -206,6 +206,41 @@ TEST(VectorOps, DotVec4)
EXPECT_FLOAT_EQ(HMM_Dot(v1, v2), 70.0f);
}
TEST(MatrixOps, Transpose)
{
hmm_mat4 m4 = HMM_Mat4(); // will have 1 - 16
// Fill the matrix
int Counter = 1;
for (int Column = 0; Column < 4; ++Column)
{
for (int Row = 0; Row < 4; ++Row)
{
m4.Elements[Column][Row] = Counter;
++Counter;
}
}
// Test the matrix
hmm_mat4 result = HMM_Transpose(m4);
EXPECT_FLOAT_EQ(result.Elements[0][0], 1.0f);
EXPECT_FLOAT_EQ(result.Elements[0][1], 5.0f);
EXPECT_FLOAT_EQ(result.Elements[0][2], 9.0f);
EXPECT_FLOAT_EQ(result.Elements[0][3], 13.0f);
EXPECT_FLOAT_EQ(result.Elements[1][0], 2.0f);
EXPECT_FLOAT_EQ(result.Elements[1][1], 6.0f);
EXPECT_FLOAT_EQ(result.Elements[1][2], 10.0f);
EXPECT_FLOAT_EQ(result.Elements[1][3], 14.0f);
EXPECT_FLOAT_EQ(result.Elements[2][0], 3.0f);
EXPECT_FLOAT_EQ(result.Elements[2][1], 7.0f);
EXPECT_FLOAT_EQ(result.Elements[2][2], 11.0f);
EXPECT_FLOAT_EQ(result.Elements[2][3], 15.0f);
EXPECT_FLOAT_EQ(result.Elements[3][0], 4.0f);
EXPECT_FLOAT_EQ(result.Elements[3][1], 8.0f);
EXPECT_FLOAT_EQ(result.Elements[3][2], 12.0f);
EXPECT_FLOAT_EQ(result.Elements[3][3], 16.0f);
}
TEST(Addition, Vec2)
{
hmm_vec2 v2_1 = HMM_Vec2(1.0f, 2.0f);