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comparison src/zamikongine/mesh.nim @ 20:beb86492b178

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add: generate ubermeshes
author Sam <sam@basx.dev>
date Tue, 10 Jan 2023 00:23:40 +0700
parents b55d6ecde79d
children 94c38e4b5782
comparison
equal deleted inserted replaced
19:b55d6ecde79d 20:beb86492b178
9 Mesh*[T] = object of Part 9 Mesh*[T] = object of Part
10 vertexData*: T 10 vertexData*: T
11 IndexedMesh*[T: object, U: uint16|uint32] = object of Part 11 IndexedMesh*[T: object, U: uint16|uint32] = object of Part
12 vertexData*: T 12 vertexData*: T
13 indices*: seq[array[3, U]] 13 indices*: seq[array[3, U]]
14
15 func createUberMesh*[T](meshes: openArray[Mesh[T]]): Mesh[T] =
16 for mesh in meshes:
17 for srcname, srcvalue in mesh.vertexData.fieldPairs:
18 when typeof(srcvalue) is VertexAttribute:
19 for dstname, dstvalue in result.vertexData.fieldPairs:
20 when srcname == dstname:
21 dstvalue.data.add srcvalue.data
22
23 func createUberMesh*[T: object, U: uint16|uint32](meshes: openArray[IndexedMesh[T, U]]): IndexedMesh[T, U] =
24 var indexoffset = U(0)
25 for mesh in meshes:
26 for srcname, srcvalue in mesh.vertexData.fieldPairs:
27 when typeof(srcvalue) is VertexAttribute:
28 for dstname, dstvalue in result.vertexData.fieldPairs:
29 when srcname == dstname:
30 dstvalue.data.add srcvalue.data
31 var indexdata: seq[array[3, U]]
32 for i in mesh.indices:
33 indexdata.add [i[0] + indexoffset, i[1] + indexoffset, i[2] + indexoffset]
34 result.indices.add indexdata
35 indexoffset += U(mesh.vertexData.VertexCount)
14 36
15 func getVkIndexType[T: object, U: uint16|uint32](m: IndexedMesh[T, U]): VkIndexType = 37 func getVkIndexType[T: object, U: uint16|uint32](m: IndexedMesh[T, U]): VkIndexType =
16 when U is uint16: VK_INDEX_TYPE_UINT16 38 when U is uint16: VK_INDEX_TYPE_UINT16
17 elif U is uint32: VK_INDEX_TYPE_UINT32 39 elif U is uint32: VK_INDEX_TYPE_UINT32
18 40