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#ifndef shaveGeometryOverride_h
#define shaveGeometryOverride_h
// Shave and a Haircut
// (c) 2019 Epic Games
// US Patent 6720962
#include <vector>
#include <maya/M3dView.h>
#include <maya/MColor.h>
#include <maya/MGeometryRequirements.h>
#include <maya/MGeometry.h>
#include <maya/MHWGeometry.h>
#include <maya/MMatrix.h>
#include <maya/MObject.h>
#include <maya/MPxGeometryOverride.h>
#include <maya/MShaderManager.h>
#include <maya/MTextureManager.h>
#include <maya/MUserData.h>
#include <maya/MVector.h>
#include <maya/MViewport2Renderer.h>
#include "shaveHairShape.h"
#if MAYA_API_VERSION < 20180000
class MDagPath;
#endif
class shaveInstanceDisplay;
class shaveGeometryOverride : public MHWRender::MPxGeometryOverride {
public:
static MPxGeometryOverride* Creator(const MObject& obj)
{
return new shaveGeometryOverride(obj);
}
virtual ~shaveGeometryOverride();
virtual MHWRender::DrawAPI supportedDrawAPIs() const;
virtual void updateDG();
virtual void updateRenderItems(
const MDagPath& path,
MHWRender::MRenderItemList& list);
virtual void populateGeometry(
const MHWRender::MGeometryRequirements& requirements,
const MHWRender::MRenderItemList& renderItems,
MHWRender::MGeometry& data
);
#if MAYA_API_VERSION >= 201600
virtual void updateSelectionGranularity(const MDagPath& path, MHWRender::MSelectionContext& selectCtx);
#endif
virtual void cleanUp();
#if MAYA_API_VERSION >= 201600
static MStatus registerComponentConverters();
static MStatus deregisterComponentConverters();
#endif
// Custom user data to attach to render items
// for doing selection.
//
class SelectionData : public MUserData
{
public:
SelectionData()
: MUserData(false)
{}
virtual ~SelectionData()
{}
MString mShaveSelectType;
// Holds the encoded (guide, vert) value for each
// primitive used to draw guide verts.
//
std::vector<unsigned int> mPrimIdxToVertIdx;
// Holds the guide index for each primitive used to
// draw a guide.
//
std::vector<unsigned int> mPrimIdxToGuideIdx;
};
// RenderItem names.
//
static const MString kHairShadedItemName;
static const MString kHairShadedSelectedItemName;
static const MString kHairWireItemName;
static const MString kHairWireSelectedItemName;
static const MString kInstanceShadedItemName;
static const MString kInstanceWireItemName;
static const MString kInstanceWireSelectedItemName;
static const MString kGuidesItemName;
static const MString kKnotsItemName;
protected:
shaveGeometryOverride(const MObject& obj);
bool disableRenderItem(
MHWRender::MRenderItemList& list,
const MString& itemName,
MHWRender::MGeometry::Primitive primType,
MHWRender::MGeometry::DrawMode drawMode
);
virtual void populateHairInstances(
const MHWRender::MGeometryRequirements& requirements,
const MHWRender::MRenderItemList& renderItems,
MHWRender::MGeometry& data
);
//uses geometry shader
virtual void populateHairLines(
const MHWRender::MGeometryRequirements& requirements,
const MHWRender::MRenderItemList& renderItems,
MHWRender::MGeometry& data
);
//polygonal hair
virtual void populateHairPolys(
const MHWRender::MGeometryRequirements& requirements,
const MHWRender::MRenderItemList& renderItems,
MHWRender::MGeometry& data
);
//uses geometry shader
virtual void populateHairGuides(
const MHWRender::MGeometryRequirements& requirements,
const MHWRender::MRenderItemList& renderItems,
MHWRender::MGeometry& data
);
void cacheHairPolys();
void cacheGuidePolys();
void cacheKnotPolys();
shaveHairShape* shave;
MObject shobj;
struct Poly {
MVector t[3];
MVector v[3];
MColor c[3];
MVector uv[3];
};
class PolyGroup {
public:
std::vector<Poly> p;
};
std::vector<PolyGroup> groups;
unsigned int ingroups;
struct GuidePoly {
MVector v[3];
bool active;
};
std::vector<GuidePoly> guidePolys;
struct KnotPoly {
MVector v[3];
bool active;
};
std::vector<KnotPoly> knotPolys;
MHWRender::MTexture* instex;
SelectionData mSelectionData;
// We're only allowed to access the DG during updateDG(). Below
// are the DG-dependent data that we need to cache for use in subsequent
// methods.
//
unsigned int mNumHairsToDraw;
const shaveHairShape::DisplayHairCache* mHairCache;
M3dView::LightingMode mLightMode;
int mHairDisplayMode;
MColor mSpecularTint;
MColor mSpecularTint2;
float mGloss;
float mSpecular;
const shaveInstanceDisplay* mInstanceCache;
MMatrix mWorldToCam;
MVector mViewDir;
MVector mUpDir;
MVector mRightDir;
float mTransparency;
bool mDoTipFade;
int mPasses;
const shaveHairShape::Guides* mGuideCache;
float mGuideExtent;
};
#endif
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