Jolt Physics
A multi core friendly Game Physics Engine
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DebugRendererSimple Class Reference

#include <DebugRendererSimple.h>

Inheritance diagram for DebugRendererSimple:
DebugRenderer NonCopyable

Public Member Functions

JPH_OVERRIDE_NEW_DELETE DebugRendererSimple ()
 Constructor.
 
void SetCameraPos (RVec3Arg inCameraPos)
 
virtual void DrawTriangle (RVec3Arg inV1, RVec3Arg inV2, RVec3Arg inV3, ColorArg inColor, ECastShadow inCastShadow) override
 Fallback implementation that uses DrawLine to draw a triangle (override this if you have a version that renders solid triangles)
 
- Public Member Functions inherited from DebugRenderer
JPH_OVERRIDE_NEW_DELETE DebugRenderer ()
 Constructor.
 
virtual ~DebugRenderer ()
 
void NextFrame ()
 Call once after frame is complete. Releases unused dynamically generated geometry assets.
 
virtual void DrawLine (RVec3Arg inFrom, RVec3Arg inTo, ColorArg inColor)=0
 Draw line.
 
void DrawWireBox (const AABox &inBox, ColorArg inColor)
 Draw wireframe box.
 
void DrawWireBox (const OrientedBox &inBox, ColorArg inColor)
 
void DrawWireBox (RMat44Arg inMatrix, const AABox &inBox, ColorArg inColor)
 
void DrawMarker (RVec3Arg inPosition, ColorArg inColor, float inSize)
 Draw a marker on a position.
 
void DrawArrow (RVec3Arg inFrom, RVec3Arg inTo, ColorArg inColor, float inSize)
 Draw an arrow.
 
void DrawCoordinateSystem (RMat44Arg inTransform, float inSize=1.0f)
 Draw coordinate system (3 arrows, x = red, y = green, z = blue)
 
void DrawPlane (RVec3Arg inPoint, Vec3Arg inNormal, ColorArg inColor, float inSize)
 Draw a plane through inPoint with normal inNormal.
 
void DrawWireTriangle (RVec3Arg inV1, RVec3Arg inV2, RVec3Arg inV3, ColorArg inColor)
 Draw wireframe triangle.
 
template<class VERTEX_ARRAY >
void DrawWirePolygon (RMat44Arg inTransform, const VERTEX_ARRAY &inVertices, ColorArg inColor, float inArrowSize=0.0f)
 Draw a wireframe polygon.
 
void DrawWireSphere (RVec3Arg inCenter, float inRadius, ColorArg inColor, int inLevel=3)
 Draw wireframe sphere.
 
void DrawWireUnitSphere (RMat44Arg inMatrix, ColorArg inColor, int inLevel=3)
 
void DrawBox (const AABox &inBox, ColorArg inColor, ECastShadow inCastShadow=ECastShadow::On, EDrawMode inDrawMode=EDrawMode::Solid)
 Draw a box.
 
void DrawBox (RMat44Arg inMatrix, const AABox &inBox, ColorArg inColor, ECastShadow inCastShadow=ECastShadow::On, EDrawMode inDrawMode=EDrawMode::Solid)
 
void DrawSphere (RVec3Arg inCenter, float inRadius, ColorArg inColor, ECastShadow inCastShadow=ECastShadow::On, EDrawMode inDrawMode=EDrawMode::Solid)
 Draw a sphere.
 
void DrawUnitSphere (RMat44Arg inMatrix, ColorArg inColor, ECastShadow inCastShadow=ECastShadow::On, EDrawMode inDrawMode=EDrawMode::Solid)
 
void DrawCapsule (RMat44Arg inMatrix, float inHalfHeightOfCylinder, float inRadius, ColorArg inColor, ECastShadow inCastShadow=ECastShadow::On, EDrawMode inDrawMode=EDrawMode::Solid)
 
void DrawCylinder (RMat44Arg inMatrix, float inHalfHeight, float inRadius, ColorArg inColor, ECastShadow inCastShadow=ECastShadow::On, EDrawMode inDrawMode=EDrawMode::Solid)
 
void DrawOpenCone (RVec3Arg inTop, Vec3Arg inAxis, Vec3Arg inPerpendicular, float inHalfAngle, float inLength, ColorArg inColor, ECastShadow inCastShadow=ECastShadow::On, EDrawMode inDrawMode=EDrawMode::Solid)
 
void DrawSwingConeLimits (RMat44Arg inMatrix, float inSwingYHalfAngle, float inSwingZHalfAngle, float inEdgeLength, ColorArg inColor, ECastShadow inCastShadow=ECastShadow::On, EDrawMode inDrawMode=EDrawMode::Solid)
 
void DrawSwingPyramidLimits (RMat44Arg inMatrix, float inMinSwingYAngle, float inMaxSwingYAngle, float inMinSwingZAngle, float inMaxSwingZAngle, float inEdgeLength, ColorArg inColor, ECastShadow inCastShadow=ECastShadow::On, EDrawMode inDrawMode=EDrawMode::Solid)
 
void DrawPie (RVec3Arg inCenter, float inRadius, Vec3Arg inNormal, Vec3Arg inAxis, float inMinAngle, float inMaxAngle, ColorArg inColor, ECastShadow inCastShadow=ECastShadow::On, EDrawMode inDrawMode=EDrawMode::Solid)
 
void DrawTaperedCylinder (RMat44Arg inMatrix, float inTop, float inBottom, float inTopRadius, float inBottomRadius, ColorArg inColor, ECastShadow inCastShadow=ECastShadow::On, EDrawMode inDrawMode=EDrawMode::Solid)
 
Batch CreateTriangleBatch (const Array< Triangle > &inTriangles)
 
Batch CreateTriangleBatch (const Array< Vertex > &inVertices, const Array< uint32 > &inIndices)
 
Batch CreateTriangleBatch (const VertexList &inVertices, const IndexedTriangleNoMaterialList &inTriangles)
 
Batch CreateTriangleBatchForConvex (SupportFunction inGetSupport, int inLevel, AABox *outBounds=nullptr)
 
GeometryRef CreateTriangleGeometryForConvex (SupportFunction inGetSupport)
 
void DrawGeometry (RMat44Arg inModelMatrix, ColorArg inModelColor, const GeometryRef &inGeometry, ECullMode inCullMode=ECullMode::CullBackFace, ECastShadow inCastShadow=ECastShadow::On, EDrawMode inDrawMode=EDrawMode::Solid)
 
virtual void DrawText3D (RVec3Arg inPosition, const string_view &inString, ColorArg inColor=Color::sWhite, float inHeight=0.5f)=0
 Draw text.
 
- Public Member Functions inherited from NonCopyable
 NonCopyable ()=default
 
 NonCopyable (const NonCopyable &)=delete
 
void operator= (const NonCopyable &)=delete
 

Protected Member Functions

virtual Batch CreateTriangleBatch (const Triangle *inTriangles, int inTriangleCount) override
 Implementation of DebugRenderer interface.
 
virtual Batch CreateTriangleBatch (const Vertex *inVertices, int inVertexCount, const uint32 *inIndices, int inIndexCount) override
 
virtual void DrawGeometry (RMat44Arg inModelMatrix, const AABox &inWorldSpaceBounds, float inLODScaleSq, ColorArg inModelColor, const GeometryRef &inGeometry, ECullMode inCullMode, ECastShadow inCastShadow, EDrawMode inDrawMode) override
 
- Protected Member Functions inherited from DebugRenderer
void Initialize ()
 Initialize the system, must be called from the constructor of the DebugRenderer implementation.
 

Additional Inherited Members

- Public Types inherited from DebugRenderer
enum class  ECastShadow { On , Off }
 Enum that determines if a shadow should be cast or not. More...
 
enum class  EDrawMode { Solid , Wireframe }
 Determines how triangles are drawn. More...
 
enum class  ECullMode { CullBackFace , CullFrontFace , Off }
 Determines which polygons are culled. More...
 
using Batch = Ref< RefTargetVirtual >
 Handle for a batch of triangles.
 
using GeometryRef = Ref< Geometry >
 Handle for a lodded triangle batch.
 
using SupportFunction = function< Vec3(Vec3Arg inDirection)>
 Create a primitive for a convex shape using its support function.
 
- Static Public Member Functions inherited from DebugRenderer
static AABox sCalculateBounds (const Vertex *inVertices, int inVertexCount)
 Calculate bounding box for a batch of triangles.
 
- Static Public Attributes inherited from DebugRenderer
static DebugRenderersInstance = nullptr
 Singleton instance.
 

Detailed Description

Inherit from this class to simplify implementing a debug renderer, start with this implementation:

class MyDebugRenderer : public JPH::DebugRendererSimple
{
public:
    virtual void DrawLine(JPH::RVec3Arg inFrom, JPH::RVec3Arg inTo, JPH::ColorArg inColor) override
    {
        // Implement
    }

    virtual void DrawTriangle(JPH::RVec3Arg inV1, JPH::RVec3Arg inV2, JPH::RVec3Arg inV3, JPH::ColorArg inColor, ECastShadow inCastShadow) override
    {
        // Implement
    }

    virtual void DrawText3D(JPH::RVec3Arg inPosition, const string_view &inString, JPH::ColorArg inColor, float inHeight) override
    {
        // Implement
    }
};

Note that this class is meant to be a quick start for implementing a debug renderer, it is not the most efficient way to implement a debug renderer.

Constructor & Destructor Documentation

◆ DebugRendererSimple()

JPH_NAMESPACE_BEGIN DebugRendererSimple::DebugRendererSimple ( )

Constructor.

Member Function Documentation

◆ CreateTriangleBatch() [1/2]

DebugRenderer::Batch DebugRendererSimple::CreateTriangleBatch ( const Triangle inTriangles,
int  inTriangleCount 
)
overrideprotectedvirtual

Implementation of DebugRenderer interface.

Implements DebugRenderer.

◆ CreateTriangleBatch() [2/2]

DebugRenderer::Batch DebugRendererSimple::CreateTriangleBatch ( const Vertex inVertices,
int  inVertexCount,
const uint32 inIndices,
int  inIndexCount 
)
overrideprotectedvirtual

Implements DebugRenderer.

◆ DrawGeometry()

void DebugRendererSimple::DrawGeometry ( RMat44Arg  inModelMatrix,
const AABox inWorldSpaceBounds,
float  inLODScaleSq,
ColorArg  inModelColor,
const GeometryRef inGeometry,
ECullMode  inCullMode,
ECastShadow  inCastShadow,
EDrawMode  inDrawMode 
)
overrideprotectedvirtual

Draw some geometry

Parameters
inModelMatrixis the matrix that transforms the geometry to world space.
inWorldSpaceBoundsis the bounding box of the geometry after transforming it into world space.
inLODScaleSqis the squared scale of the model matrix, it is multiplied with the LOD distances in inGeometry to calculate the real LOD distance (so a number > 1 will force a higher LOD).
inModelColoris the color with which to multiply the vertex colors in inGeometry.
inGeometryThe geometry to draw.
inCullModedetermines which polygons are culled.
inCastShadowdetermines if this geometry should cast a shadow or not.
inDrawModedetermines if we draw the geometry solid or in wireframe.

Implements DebugRenderer.

◆ DrawTriangle()

virtual void DebugRendererSimple::DrawTriangle ( RVec3Arg  inV1,
RVec3Arg  inV2,
RVec3Arg  inV3,
ColorArg  inColor,
ECastShadow  inCastShadow 
)
inlineoverridevirtual

Fallback implementation that uses DrawLine to draw a triangle (override this if you have a version that renders solid triangles)

Implements DebugRenderer.

◆ SetCameraPos()

void DebugRendererSimple::SetCameraPos ( RVec3Arg  inCameraPos)
inline

Should be called every frame by the application to provide the camera position. This is used to determine the correct LOD for rendering.


The documentation for this class was generated from the following files: