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Make everything use radians (#107)

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* Make everything use radians (and provide an escape hatch)

* Fix tests

* Add tests for forcing degrees

* Add degrees tests for windows

* Remove coverage macro; just always use radians

* Update forward declarations and clean up tests

* Tell the user that angles are in radians
This commit is contained in:
Ben Visness
2020-04-06 09:56:43 -05:00
committed by GitHub
parent a9b08b9147
commit 68d2af495c
5 changed files with 39 additions and 18 deletions
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2
test/categories/Projection.h
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@@ -15,7 +15,7 @@ TEST(Projection, Orthographic)
TEST(Projection, Perspective)
{
hmm_mat4 projection = HMM_Perspective(90.0f, 2.0f, 5.0f, 15.0f);
hmm_mat4 projection = HMM_Perspective(HMM_ToRadians(90.0f), 2.0f, 5.0f, 15.0f);
{
hmm_vec3 original = HMM_Vec3(5.0f, 5.0f, -15.0f);

8
test/categories/QuaternionOps.h
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@@ -111,7 +111,7 @@ TEST(QuaternionOps, Mat4ToQuat)
// Rotate 90 degrees on the X axis
{
hmm_mat4 m = HMM_Rotate(90, HMM_Vec3(1, 0, 0));
hmm_mat4 m = HMM_Rotate(HMM_ToRadians(90.0f), HMM_Vec3(1, 0, 0));
hmm_quaternion result = HMM_Mat4ToQuaternion(m);
float cosf = 0.707107f; // cos(90/2 degrees)
@@ -125,7 +125,7 @@ TEST(QuaternionOps, Mat4ToQuat)
// Rotate 90 degrees on the Y axis (axis not normalized, just for fun)
{
hmm_mat4 m = HMM_Rotate(90, HMM_Vec3(0, 2, 0));
hmm_mat4 m = HMM_Rotate(HMM_ToRadians(90.0f), HMM_Vec3(0, 2, 0));
hmm_quaternion result = HMM_Mat4ToQuaternion(m);
float cosf = 0.707107f; // cos(90/2 degrees)
@@ -139,7 +139,7 @@ TEST(QuaternionOps, Mat4ToQuat)
// Rotate 90 degrees on the Z axis
{
hmm_mat4 m = HMM_Rotate(90, HMM_Vec3(0, 0, 1));
hmm_mat4 m = HMM_Rotate(HMM_ToRadians(90.0f), HMM_Vec3(0, 0, 1));
hmm_quaternion result = HMM_Mat4ToQuaternion(m);
float cosf = 0.707107f; // cos(90/2 degrees)
@@ -153,7 +153,7 @@ TEST(QuaternionOps, Mat4ToQuat)
// Rotate 45 degrees on the X axis (this hits case 4)
{
hmm_mat4 m = HMM_Rotate(45, HMM_Vec3(1, 0, 0));
hmm_mat4 m = HMM_Rotate(HMM_ToRadians(45.0f), HMM_Vec3(1, 0, 0));
hmm_quaternion result = HMM_Mat4ToQuaternion(m);
float cosf = 0.9238795325f; // cos(90/2 degrees)

7
test/categories/ScalarMath.h
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@@ -36,6 +36,13 @@ TEST(ScalarMath, Trigonometry)
// checking that things work by default.
}
TEST(ScalarMath, ToDegrees)
{
EXPECT_FLOAT_EQ(HMM_ToDegrees(0.0f), 0.0f);
EXPECT_FLOAT_EQ(HMM_ToDegrees(HMM_PI32), 180.0f);
EXPECT_FLOAT_EQ(HMM_ToDegrees(-HMM_PI32), -180.0f);
}
TEST(ScalarMath, ToRadians)
{
EXPECT_FLOAT_EQ(HMM_ToRadians(0.0f), 0.0f);

8
test/categories/Transformation.h
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@@ -17,21 +17,23 @@ TEST(Transformations, Rotate)
{
hmm_vec3 original = HMM_Vec3(1.0f, 1.0f, 1.0f);
hmm_mat4 rotateX = HMM_Rotate(90, HMM_Vec3(1, 0, 0));
float angle = HMM_ToRadians(90.0f);
hmm_mat4 rotateX = HMM_Rotate(angle, HMM_Vec3(1, 0, 0));
hmm_vec4 rotatedX = HMM_MultiplyMat4ByVec4(rotateX, HMM_Vec4v(original, 1));
EXPECT_FLOAT_EQ(rotatedX.X, 1.0f);
EXPECT_FLOAT_EQ(rotatedX.Y, -1.0f);
EXPECT_FLOAT_EQ(rotatedX.Z, 1.0f);
EXPECT_FLOAT_EQ(rotatedX.W, 1.0f);
hmm_mat4 rotateY = HMM_Rotate(90, HMM_Vec3(0, 1, 0));
hmm_mat4 rotateY = HMM_Rotate(angle, HMM_Vec3(0, 1, 0));
hmm_vec4 rotatedY = HMM_MultiplyMat4ByVec4(rotateY, HMM_Vec4v(original, 1));
EXPECT_FLOAT_EQ(rotatedY.X, 1.0f);
EXPECT_FLOAT_EQ(rotatedY.Y, 1.0f);
EXPECT_FLOAT_EQ(rotatedY.Z, -1.0f);
EXPECT_FLOAT_EQ(rotatedY.W, 1.0f);
hmm_mat4 rotateZ = HMM_Rotate(90, HMM_Vec3(0, 0, 1));
hmm_mat4 rotateZ = HMM_Rotate(angle, HMM_Vec3(0, 0, 1));
hmm_vec4 rotatedZ = HMM_MultiplyMat4ByVec4(rotateZ, HMM_Vec4v(original, 1));
EXPECT_FLOAT_EQ(rotatedZ.X, -1.0f);
EXPECT_FLOAT_EQ(rotatedZ.Y, 1.0f);