hyzboy/ULRE
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Added CreateCircle2D/3D,CreateCircle3DByIndexTriangles functions.

Browse Source
This commit is contained in:
hyzboy 2024-08-30 01:28:49 +08:00
parent e35abf0051
commit cf2efd69b9
2 changed files with 165 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
inc/hgl/graph/InlineGeometry.h
View File

@ -48,9 +48,9 @@ namespace hgl
{
Vector2f center; ///<圆心坐标
Vector2f radius; ///<半径
uint field_count=8; ///<分段次数
uint field_count=8; ///<分段数量
bool has_color =false;
bool has_center; ///<是否有圆心点
Vector4f center_color; ///<圆心颜色
Vector4f border_color; ///<边缘颜色
@ -59,7 +59,17 @@ namespace hgl
/**
* 创建一个2D圆形(扇形/线圈)
*/
Primitive *CreateCircle(PrimitiveCreater *pc,const CircleCreateInfo *cci);
Primitive *CreateCircle2D(PrimitiveCreater *pc,const CircleCreateInfo *cci);
/**
* 创建一个3D圆形(扇形/圆形，XY，Z永远为0)
*/
Primitive *CreateCircle3D(PrimitiveCreater *pc,const CircleCreateInfo *cci);
/**
* 创建一个使用三角形绘制的3D圆形(扇形/圆形，XY，Z永远为0)
*/
Primitive *CreateCircle3DByIndexTriangles(PrimitiveCreater *pc,const CircleCreateInfo *cci);
/**
* 平面网格创建信息<br>

158
src/SceneGraph/InlineGeometry.cpp
View File

@ -113,14 +113,14 @@ namespace hgl
return pc->Create();
}
Primitive *CreateCircle(PrimitiveCreater *pc,const CircleCreateInfo *cci)
Primitive *CreateCircle2D(PrimitiveCreater *pc,const CircleCreateInfo *cci)
{
if(!pc)return(nullptr);
uint edge;
uint vertex_count;
if(cci->has_color)
if(cci->has_center)
{
edge=cci->field_count+1;
vertex_count=cci->field_count+2;
@ -139,12 +139,11 @@ namespace hgl
if(!vertex.IsValid())
return(nullptr);
if(cci->has_color)
if(cci->has_center)
{
if(!color.IsValid())
return(nullptr);
vertex->Write(cci->center);
if(color.IsValid())
color->Write(cci->center_color);
}
@ -157,13 +156,158 @@ namespace hgl
vertex->Write(x,y);
if(cci->has_color)
if(color.IsValid())
color->Write(cci->border_color);
}
return pc->Create();
}
template<typename T>
void WriteIBO(T *p,const T start,const T count)
{
for(T i=start;i<start+count;i++)
{
*p=i;
++p;
}
}
Primitive *CreateCircle3D(PrimitiveCreater *pc,const CircleCreateInfo *cci)
{
if(!pc)return(nullptr);
uint edge;
uint vertex_count;
if(cci->has_center)
{
edge=cci->field_count+1;
vertex_count=cci->field_count+2;
}
else
{
edge=cci->field_count;
vertex_count=cci->field_count;
}
bool has_index=pc->hasIndex();
if(!pc->Init("Circle",vertex_count,has_index?vertex_count:0))return(nullptr);
VABMap3f vertex(pc->GetVABMap(VAN::Position));
VABMap4f color(pc->GetVABMap(VAN::Color));
VABMap3f normal(pc->GetVABMap(VAN::Normal));
if(!vertex.IsValid())
return(nullptr);
if(cci->has_center)
{
vertex->Write(cci->center.x,cci->center.y,0);
if(color.IsValid())
color->Write(cci->center_color);
if(normal.IsValid())
normal->Write(AxisVector::Z);
}
for(uint i=0;i<edge;i++)
{
float ang=float(i)/float(cci->field_count)*360.0f;
float x=cci->center.x+sin(deg2rad(ang))*cci->radius.x;
float y=cci->center.y+cos(deg2rad(ang))*cci->radius.y;
vertex->Write(x,y,0);
if(color.IsValid())
color->Write(cci->border_color);
if(normal.IsValid())
normal->Write(AxisVector::Z);
}
if(has_index)
{
IBMap *ib_map=pc->GetIBMap();
if(pc->GetIndexType()==IndexType::U16)WriteIBO<uint16>((uint16 *)(ib_map->Map()),0,vertex_count);else
if(pc->GetIndexType()==IndexType::U32)WriteIBO<uint32>((uint32 *)(ib_map->Map()),0,vertex_count);else
if(pc->GetIndexType()==IndexType::U8 )WriteIBO<uint8 >((uint8 *)(ib_map->Map()),0,vertex_count);
ib_map->Unmap();
}
return pc->Create();
}
template<typename T>
void WriteCircleIBO(T *ibo,const uint edge_count)
{
T *p=ibo;
for(T i=1;i<edge_count;i++)
{
*p=0; ++p;
*p=i+1;++p;
*p=i; ++p;
}
*p=0; ++p;
*p=1; ++p;
*p=edge_count;
}
Primitive *CreateCircle3DByIndexTriangles(PrimitiveCreater *pc,const CircleCreateInfo *cci)
{
if(!pc)return(nullptr);
uint vertex_count;
uint index_count;
vertex_count=cci->field_count;
index_count=(vertex_count-2)*3;
if(!pc->Init("Circle",vertex_count,index_count))return(nullptr);
VABMap3f vertex(pc->GetVABMap(VAN::Position));
VABMap4f color(pc->GetVABMap(VAN::Color));
VABMap3f normal(pc->GetVABMap(VAN::Normal));
if(!vertex.IsValid())
return(nullptr);
for(uint i=0;i<cci->field_count+1;i++)
{
float ang=float(i)/float(cci->field_count)*360.0f;
float x=cci->center.x+sin(deg2rad(ang))*cci->radius.x;
float y=cci->center.y+cos(deg2rad(ang))*cci->radius.y;
vertex->Write(x,y,0);
if(color.IsValid())
color->Write(cci->border_color);
if(normal.IsValid())
normal->Write(AxisVector::Z);
}
{
IBMap *ib_map=pc->GetIBMap();
if(pc->GetIndexType()==IndexType::U16)WriteCircleIBO<uint16>((uint16 *)(ib_map->Map()),cci->field_count);else
if(pc->GetIndexType()==IndexType::U32)WriteCircleIBO<uint32>((uint32 *)(ib_map->Map()),cci->field_count);else
if(pc->GetIndexType()==IndexType::U8 )WriteCircleIBO<uint8 >((uint8 *)(ib_map->Map()),cci->field_count);
ib_map->Unmap();
}
return pc->Create();
}
Primitive *CreatePlaneGrid2D(PrimitiveCreater *pc,const PlaneGridCreateInfo *pgci)
{
if(!pc->Init("PlaneGrid",((pgci->grid_size.Width()+1)+(pgci->grid_size.Height()+1))*2,0))