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PR addressing. Removed RTTI from HeightMaterialPoint since it's just a struct of data with no intention being a part of class hierarchy

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Signed-off-by: Sergey Pereslavtsev <pereslav@amazon.com>
monroegm-disable-blank-issue-2
Sergey Pereslavtsev 4 years ago
parent c31e3c0208
commit 56c6f81627
3 changed files with 52 additions and 49 deletions
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5
Code/Framework/AzFramework/AzFramework/Physics/HeightfieldProviderBus.h
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@ -35,16 +35,15 @@ namespace Physics
{
}
virtual ~HeightMaterialPoint() = default;
~HeightMaterialPoint() = default;
static void Reflect(AZ::ReflectContext* context);
AZ_RTTI(HeightMaterialPoint, "{DF167ED4-24E6-4F7B-8AB7-42622F7DBAD3}");
AZ_TYPE_INFO(HeightMaterialPoint, "{DF167ED4-24E6-4F7B-8AB7-42622F7DBAD3}");
float m_height{ 0.0f }; //!< Holds the height of this point in the heightfield relative to the heightfield entity location.
QuadMeshType m_quadMeshType{ QuadMeshType::SubdivideUpperLeftToBottomRight }; //!< By default, create two triangles like this |\|, where this point is in the upper left corner.
uint8_t m_materialIndex{ 0 }; //!< The surface material index for the upper left corner of this quad.
uint16_t m_padding{ 0 }; //!< available for future use.
};
//! An interface to provide heightfield values.

83
Gems/PhysX/Code/Source/Utils.cpp
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@ -71,7 +71,6 @@ namespace PhysX
const int32_t row, const int32_t col,
const int32_t numRows, const int32_t numCols)
{
uint8_t materialIndex0 = 0;
uint8_t materialIndex1 = 0;
@ -81,49 +80,51 @@ namespace PhysX
// In PhysX, the material indices refer to the quad down and to the right of the sample.
// If we're in the last row or last column, there aren't any quads down or to the right,
// so just clear these out.
if (!lastRowIndex && !lastColumnIndex)
if (lastRowIndex || lastColumnIndex)
{
auto GetIndex = [numCols](int32_t row, int32_t col)
{
return (row * numCols) + col;
};
return { materialIndex0, materialIndex1 };
}
auto GetIndex = [numCols](int32_t row, int32_t col)
{
return (row * numCols) + col;
};
// Our source data is providing one material index per vertex, but PhysX wants one material index
// per triangle. The heuristic that we'll go with for selecting the material index is to choose
// the material for the vertex that's not on the diagonal of each triangle.
// Ex: A *---* B
// | / | For this, we'll use A for index0 and D for index1.
// C *---* D
//
// Ex: A *---* B
// | \ | For this, we'll use C for index0 and B for index1.
// C *---* D
//
// This is a pretty arbitrary choice, so the heuristic might need to be revisited over time if this
// causes incorrect or unpredictable physics material mappings.
const Physics::HeightMaterialPoint& currentSample = samples[GetIndex(row, col)];
switch (currentSample.m_quadMeshType)
{
case Physics::QuadMeshType::SubdivideUpperLeftToBottomRight:
materialIndex0 = samples[GetIndex(row + 1, col)].m_materialIndex;
materialIndex1 = samples[GetIndex(row, col + 1)].m_materialIndex;
break;
case Physics::QuadMeshType::SubdivideBottomLeftToUpperRight:
materialIndex0 = currentSample.m_materialIndex;
materialIndex1 = samples[GetIndex(row + 1, col + 1)].m_materialIndex;
break;
case Physics::QuadMeshType::Hole:
materialIndex0 = physx::PxHeightFieldMaterial::eHOLE;
materialIndex1 = physx::PxHeightFieldMaterial::eHOLE;
break;
default:
AZ_Assert(false, "Unhandled case in GetPhysXMaterialIndicesFromHeightfieldSamples");
break;
}
// Our source data is providing one material index per vertex, but PhysX wants one material index
// per triangle. The heuristic that we'll go with for selecting the material index is to choose
// the material for the vertex that's not on the diagonal of each triangle.
// Ex: A *---* B
// | / | For this, we'll use A for index0 and D for index1.
// C *---* D
//
// Ex: A *---* B
// | \ | For this, we'll use C for index0 and B for index1.
// C *---* D
//
// This is a pretty arbitrary choice, so the heuristic might need to be revisited over time if this
// causes incorrect or unpredictable physics material mappings.
const Physics::HeightMaterialPoint& currentSample = samples[GetIndex(row, col)];
switch (currentSample.m_quadMeshType)
{
case Physics::QuadMeshType::SubdivideUpperLeftToBottomRight:
materialIndex0 = samples[GetIndex(row + 1, col)].m_materialIndex;
materialIndex1 = samples[GetIndex(row, col + 1)].m_materialIndex;
break;
case Physics::QuadMeshType::SubdivideBottomLeftToUpperRight:
materialIndex0 = currentSample.m_materialIndex;
materialIndex1 = samples[GetIndex(row + 1, col + 1)].m_materialIndex;
break;
case Physics::QuadMeshType::Hole:
materialIndex0 = physx::PxHeightFieldMaterial::eHOLE;
materialIndex1 = physx::PxHeightFieldMaterial::eHOLE;
break;
default:
AZ_Assert(false, "Unhandled case in GetPhysXMaterialIndicesFromHeightfieldSamples");
break;
}
return { materialIndex0, materialIndex1 };
}

13
Gems/PhysX/Code/Tests/EditorHeightfieldColliderComponentTests.cpp
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@ -139,9 +139,9 @@ namespace PhysXEditorTests
// Create an asset out of our Script Event
Physics::MaterialLibraryAsset* matLibAsset = aznew Physics::MaterialLibraryAsset;
{
AZStd::vector<Physics::MaterialId> matIds = GetMaterialList();
const AZStd::vector<Physics::MaterialId> matIds = GetMaterialList();
for (Physics::MaterialId matId : matIds)
for (const Physics::MaterialId& matId : matIds)
{
Physics::MaterialFromAssetConfiguration matConfig;
matConfig.m_id = matId;
@ -336,7 +336,7 @@ namespace PhysXEditorTests
// PhysX Heightfield cooking doesn't map 1-1 sample material indices to triangle material indices
// Hence hardcoding the expected material indices in the test
const int physicsMaterialsValidationDataIndex[] = {0, 2, 1, 1};
const AZStd::array<int, 4> physicsMaterialsValidationDataIndex = {0, 2, 1, 1};
for (int sampleRow = 0; sampleRow < numRows; ++sampleRow)
{
@ -364,8 +364,11 @@ namespace PhysXEditorTests
Physics::Material* mat2 = GetMaterialFromRaycast(rayX + secondRayOffset, rayY + secondRayOffset);
EXPECT_NE(mat2, nullptr);
AZStd::string expectedMaterialName = physicsSurfaceTypes[physicsMaterialsValidationDataIndex[sampleRow * 2 + sampleColumn]];
EXPECT_EQ(mat1->GetSurfaceTypeName(), expectedMaterialName);
if (mat1)
{
AZStd::string expectedMaterialName = physicsSurfaceTypes[physicsMaterialsValidationDataIndex[sampleRow * 2 + sampleColumn]];
EXPECT_EQ(mat1->GetSurfaceTypeName(), expectedMaterialName);
}
}
}
}

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