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write some CKMesh

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This commit is contained in:
yyc12345 2023-09-18 21:06:34 +08:00
parent 616a32ce19
commit 678529a664
2 changed files with 127 additions and 1 deletions
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127
LibCmo/CK2/ObjImpls/CKMesh.cpp
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@ -74,21 +74,146 @@ namespace LibCmo::CK2::ObjImpls {
}
// read vertex data
VertexSaveFlags saveflags = VertexSaveFlags::None;
if (chunk->SeekIdentifier(CK_STATESAVEFLAGS_MESH::CK_STATESAVE_MESHVERTICES)) {
// read and set vertex count
CKDWORD vertexCount;
chunk->ReadStruct(vertexCount);
if (vertexCount != 0) {
VertexSaveFlags saveflags;
// read save flags
chunk->ReadStruct(saveflags);
// read size in dword
CKDWORD sizeInDword;
chunk->ReadStruct(sizeInDword);
// lock read buffer
auto buf = chunk->LockReadBufferWrapper(sizeInDword * CKSizeof(CKDWORD));
const CKBYTE* rawbuf = static_cast<const CKBYTE*>(buf.get());
// copy position if it have
if (!EnumsHelper::Has(saveflags, VertexSaveFlags::NoPos)) {
CKDWORD consumed = CKSizeof(VxMath::VxVector3) * vertexCount;
std::memcpy(m_VertexPosition.data(), rawbuf, consumed);
rawbuf += consumed;
}
// copy color or apply single color
if (!EnumsHelper::Has(saveflags, VertexSaveFlags::SingleColor)) {
CKDWORD consumed = CKSizeof(CKDWORD) * vertexCount;
std::memcpy(m_VertexColor.data(), rawbuf, consumed);
rawbuf += consumed;
} else {
VxMath::VxCopyStructure(
vertexCount,
m_VertexColor.data(),
CKSizeof(CKDWORD),
CKSizeof(CKDWORD),
rawbuf,
0 // InStride = 0 to make sure copy this single value to every elements.
);
rawbuf += CKSizeof(CKDWORD);
}
// copy specular color or apply a single color
if (!EnumsHelper::Has(saveflags, VertexSaveFlags::SingleSpecularColor)) {
CKDWORD consumed = CKSizeof(CKDWORD) * vertexCount;
std::memcpy(m_VertexSpecularColor.data(), rawbuf, consumed);
rawbuf += consumed;
} else {
VxMath::VxCopyStructure(
vertexCount,
m_VertexSpecularColor.data(),
CKSizeof(CKDWORD),
CKSizeof(CKDWORD),
rawbuf,
0 // InStride = 0 to make sure copy this single value to every elements.
);
rawbuf += CKSizeof(CKDWORD);
}
// copy normals if it has
if (!EnumsHelper::Has(saveflags, VertexSaveFlags::NoNormal)) {
CKDWORD consumed = CKSizeof(VxMath::VxVector3) * vertexCount;
std::memcpy(m_VertexNormal.data(), rawbuf, consumed);
rawbuf += consumed;
}
// copy uv or apply single uv
if (!EnumsHelper::Has(saveflags, VertexSaveFlags::SingleUV)) {
CKDWORD consumed = CKSizeof(VxMath::VxVector2) * vertexCount;
std::memcpy(m_VertexUV.data(), rawbuf, consumed);
rawbuf += consumed;
} else {
VxMath::VxCopyStructure(
vertexCount,
m_VertexUV.data(),
CKSizeof(VxMath::VxVector2),
CKSizeof(VxMath::VxVector2),
rawbuf,
0 // InStride = 0 to make sure copy this single value to every elements.
);
rawbuf += CKSizeof(VxMath::VxVector2);
}
// free buf
buf.reset();
}
}
// read face data
if (chunk->SeekIdentifier(CK_STATESAVEFLAGS_MESH::CK_STATESAVE_MESHFACES)) {
// read face count and set
CKDWORD faceCount;
chunk->ReadStruct(faceCount);
SetFaceCount(faceCount);
// lock buffer
auto buf = chunk->LockReadBufferWrapper(faceCount * CKSizeof(CKDWORD) * 2);
const CKWORD* rawbuf = static_cast<const CKWORD*>(buf.get());
// each face use 2 CKDWORD to describe
// first CKDWORD describe first 2 face vertex indices
// HIGH >>> 0xFFFF(indice 1) 0xFFFF(indice 0) <<< LOW
// second CKDWORD describe the third indices and used material slot index
// HIGH >>> 0xFFFF(mtl slot index) 0xFFFF(indice 2) <<< LOW
// due to little endian, the data listed before are placed in memory like this:
// (indice 0) (indice 1) (indice 2) (mtl idx)
// copy indice
VxMath::VxCopyStructure(
faceCount,
m_FaceIndices.data(),
3 * CKSizeof(CKWORD),
3 * CKSizeof(CKWORD),
rawbuf,
2 * CKSizeof(CKDWORD)
);
// copy mtl index
VxMath::VxCopyStructure(
faceCount,
m_FaceMtlIndex.data(),
CKSizeof(CKWORD),
CKSizeof(CKWORD),
rawbuf + 3,
2 * CKSizeof(CKDWORD)
);
// free buf
buf.reset();
}
// read line data
if (chunk->SeekIdentifier(CK_STATESAVEFLAGS_MESH::CK_STATESAVE_MESHLINES)) {
// read and set line count;
CKDWORD lineCount;
chunk->ReadStruct(lineCount);
SetLineCount(lineCount);
chunk->ReadNoSizeBuffer(lineCount * 2 )
}
return true;
}

1
LibCmo/CK2/ObjImpls/CKMesh.hpp
View File

@ -77,6 +77,7 @@ namespace LibCmo::CK2::ObjImpls {
protected:
enum class VertexSaveFlags : CKDWORD {
None = 0,
SingleColor = 0x1u, /**< if not set, the VertexColor is a list, otherwise a single global CKDWORD.*/
SingleSpecularColor = 0x2u, /**< if not set, the VertexSpecularColor is a list, otherwise a single global CKDWORD. */
NoNormal = 0x4u, /**< if set, there are no normal data for vertex. */