1227 lines
48 KiB
C++
1227 lines
48 KiB
C++
// sphere、cylinear、cone、tours code from McNopper,website: https://github.com/McNopper/GLUS
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// GL to VK: swap Y/Z of position/normal/tangent/index
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#include<hgl/graph/InlineGeometry.h>
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#include<hgl/graph/VertexAttribDataAccess.h>
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#include<hgl/graph/VKDevice.h>
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#include<hgl/graph/VKShaderModule.h>
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#include<hgl/graph/VKRenderResource.h>
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#include<hgl/graph/PrimitiveCreater.h>
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namespace hgl
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{
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namespace graph
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{
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namespace inline_geometry
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{
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Primitive *CreateRectangle(RenderResource *db,const VIL *vil,const RectangleCreateInfo *rci)
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{
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PrimitiveCreater rc(db,vil);
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if(!rc.Init(4))
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return(nullptr);
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AutoDelete<VB2f> vertex=rc.CreateVADA<VB2f>(VAN::Position);
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if(!vertex)
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return(nullptr);
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vertex->WriteRectFan(rci->scope);
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return rc.Finish();
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}
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Primitive *CreateGBufferCompositionRectangle(RenderResource *db,const VIL *vil)
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{
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RectangleCreateInfo rci;
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rci.scope.Set(-1,-1,2,2);
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return CreateRectangle(db,vil,&rci);
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}
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Primitive *CreateRoundRectangle(RenderResource *db,const VIL *vil,const RoundRectangleCreateInfo *rci)
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{
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PrimitiveCreater rc(db,vil);
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if(rci->radius==0||rci->round_per<=1) //这是要画矩形
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{
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if(!rc.Init(4))
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return(nullptr);
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AutoDelete<VB2f> vertex=rc.CreateVADA<VB2f>(VAN::Position);
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vertex->WriteRectFan(rci->scope);
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}
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else
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{
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float radius=rci->radius;
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if(radius>rci->scope.GetWidth()/2.0f)radius=rci->scope.GetWidth()/2.0f;
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if(radius>rci->scope.GetHeight()/2.0f)radius=rci->scope.GetHeight()/2.0f;
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if(!rc.Init(rci->round_per*4))
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return(nullptr);
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AutoDelete<VB2f> vertex=rc.CreateVADA<VB2f>(VAN::Position);
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Vector2f *coord=new Vector2f[rci->round_per];
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float l=rci->scope.GetLeft(),
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r=rci->scope.GetRight(),
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t=rci->scope.GetTop(),
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b=rci->scope.GetBottom();
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for(uint i=0;i<rci->round_per;i++)
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{
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float ang=float(i)/float(rci->round_per-1)*90.0f;
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float x=sin(deg2rad(ang))*radius;
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float y=cos(deg2rad(ang))*radius;
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coord[i].x=x;
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coord[i].y=y;
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//右上角
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vertex->Write(r-radius+x,
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t+radius-y);
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}
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//右下角
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for(uint i=0;i<rci->round_per;i++)
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{
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vertex->Write(r-radius+coord[rci->round_per-1-i].x,
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b-radius+coord[rci->round_per-1-i].y);
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}
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//左下角
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for(uint i=0;i<rci->round_per;i++)
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{
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vertex->Write(l+radius-coord[i].x,
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b-radius+coord[i].y);
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}
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//左上角
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for(uint i=0;i<rci->round_per;i++)
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{
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vertex->Write(l+radius-coord[rci->round_per-1-i].x,
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t+radius-coord[rci->round_per-1-i].y);
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}
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delete[] coord;
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}
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return rc.Finish();
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}
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Primitive *CreateCircle(RenderResource *db,const VIL *vil,const CircleCreateInfo *cci)
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{
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PrimitiveCreater rc(db,vil);
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uint edge;
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if(cci->has_color)
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{
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edge=cci->field_count+1;
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if(!rc.Init(cci->field_count+2))return(nullptr);
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}
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else
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{
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edge=cci->field_count;
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if(!rc.Init(cci->field_count))return(nullptr);
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}
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AutoDelete<VB2f> vertex=rc.CreateVADA<VB2f>(VAN::Position);
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AutoDelete<VB4f> color=rc.CreateVADA<VB4f>(VAN::Color);
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if(!vertex)
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return(nullptr);
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if(cci->has_color)
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{
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if(!color)
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return(nullptr);
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vertex->Write(cci->center);
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color->Write(cci->center_color);
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}
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for(uint i=0;i<edge;i++)
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{
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float ang=float(i)/float(cci->field_count)*360.0f;
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float x=cci->center.x+sin(deg2rad(ang))*cci->radius.x;
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float y=cci->center.y+cos(deg2rad(ang))*cci->radius.y;
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vertex->Write(x,y);
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if(cci->has_color)
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color->Write(cci->border_color);
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}
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return rc.Finish();
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}
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Primitive *CreatePlaneGrid(RenderResource *db,const VIL *vil,const PlaneGridCreateInfo *pgci)
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{
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PrimitiveCreater rc(db,vil);
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if(!rc.Init(((pgci->step.x+1)+(pgci->step.y+1))*2))
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return(nullptr);
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AutoDelete<VB3f> vertex=rc.CreateVADA<VB3f>(VAN::Position);
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for(uint row=0;row<=pgci->step.x;row++)
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{
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float pos=float(row)/float(pgci->step.x);
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vertex->WriteLine( to(pgci->coord[0],pgci->coord[1],pos),
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to(pgci->coord[3],pgci->coord[2],pos));
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}
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for(uint col=0;col<=pgci->step.y;col++)
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{
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float pos=float(col)/float(pgci->step.y);
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vertex->WriteLine(to(pgci->coord[1],pgci->coord[2],pos),
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to(pgci->coord[0],pgci->coord[3],pos));
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}
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AutoDelete<VB4f> color=rc.CreateVADA<VB4f>(VAN::Color);
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if(color)
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{
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for(uint row=0;row<=pgci->step.x;row++)
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{
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if((row%pgci->side_step.x)==0)
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color->RepeatWrite(pgci->side_color,2);
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else
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color->RepeatWrite(pgci->color,2);
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}
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for(uint col=0;col<=pgci->step.y;col++)
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{
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if((col%pgci->side_step.y)==0)
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color->RepeatWrite(pgci->side_color,2);
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else
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color->RepeatWrite(pgci->color,2);
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}
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}
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return rc.Finish();
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}
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Primitive *CreatePlane(RenderResource *db,const VIL *vil,const PlaneCreateInfo *pci)
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{
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const float xy_vertices [] = { -0.5f,-0.5f,0.0f, +0.5f,-0.5f,0.0f, +0.5f,+0.5f,0.0f, -0.5f,+0.5f,0.0f };
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float xy_tex_coord[] = { 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f };
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const Vector3f xy_normal(0.0f,0.0f,1.0f);
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const Vector3f xy_tangent(1.0f,0.0f,0.0f);
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PrimitiveCreater rc(db,vil);
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if(!rc.Init(4))
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return(nullptr);
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rc.WriteVAD(VAN::Position,xy_vertices,sizeof(xy_vertices));
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{
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AutoDelete<VB3f> normal=rc.CreateVADA<VB3f>(VAN::Normal);
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if(normal)normal->RepeatWrite(xy_normal,4);
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}
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{
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AutoDelete<VB3f> tangent=rc.CreateVADA<VB3f>(VAN::Tangent);
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tangent->RepeatWrite(xy_tangent,4);
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}
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{
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AutoDelete<VB2f> tex_coord=rc.CreateVADA<VB2f>(VAN::TexCoord);
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if(tex_coord)
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{
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xy_tex_coord[2]=xy_tex_coord[4]=pci->tile.x;
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xy_tex_coord[5]=xy_tex_coord[7]=pci->tile.y;
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tex_coord->Write(xy_tex_coord);
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}
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}
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return rc.Finish();
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}
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Primitive *CreateCube(RenderResource *db,const VIL *vil,const CubeCreateInfo *cci)
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{
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/**
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* 4 5
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* *------------* Z Y
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* /| /| | Y | Z
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* 0/ | 1/ | | / | /
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* *--+---------* | | / | /
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* | | | | | / | /
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* | 7| | 6| |/ |/
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* | *---------+--* *-----------X *-----------X
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* | / | /
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* |/ 2|/ my Cubemap
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* 3*------------*
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*
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* 注：cubemap纹理坐标系依然遵循OpenGL时代定下的坐标系，所以这里的position虽然使用vulkan坐标系，但在shader中当做cubemap纹理坐标使用时，需要在shader中转换为opengl坐标系(交换yz即可)
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*/
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constexpr float positions[]={ -0.5f, -0.5f, -0.5f, -0.5f, -0.5f, +0.5f, +0.5f, -0.5f, +0.5f, +0.5f, -0.5f, -0.5f,
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-0.5f, +0.5f, -0.5f, -0.5f, +0.5f, +0.5f, +0.5f, +0.5f, +0.5f, +0.5f, +0.5f, -0.5f,
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-0.5f, -0.5f, -0.5f, -0.5f, +0.5f, -0.5f, +0.5f, +0.5f, -0.5f, +0.5f, -0.5f, -0.5f,
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-0.5f, -0.5f, +0.5f, -0.5f, +0.5f, +0.5f, +0.5f, +0.5f, +0.5f, +0.5f, -0.5f, +0.5f,
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-0.5f, -0.5f, -0.5f, -0.5f, -0.5f, +0.5f, -0.5f, +0.5f, +0.5f, -0.5f, +0.5f, -0.5f,
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+0.5f, -0.5f, -0.5f, +0.5f, -0.5f, +0.5f, +0.5f, +0.5f, +0.5f, +0.5f, +0.5f, -0.5f};
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constexpr float normals[]={ +0.0f, +1.0f, +0.0f, +0.0f, +1.0f, +0.0f, +0.0f, +1.0f, +0.0f, +0.0f, +1.0f, +0.0f,
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+0.0f, -1.0f, +0.0f, +0.0f, -1.0f, +0.0f, +0.0f, -1.0f, +0.0f, +0.0f, -1.0f, +0.0f,
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+0.0f, -0.0f, -1.0f, +0.0f, -0.0f, -1.0f, +0.0f, -0.0f, -1.0f, +0.0f, -0.0f, -1.0f,
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+0.0f, -0.0f, +1.0f, +0.0f, -0.0f, +1.0f, +0.0f, -0.0f, +1.0f, +0.0f, -0.0f, +1.0f,
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-1.0f, -0.0f, +0.0f, -1.0f, -0.0f, +0.0f, -1.0f, -0.0f, +0.0f, -1.0f, -0.0f, +0.0f,
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+1.0f, -0.0f, +0.0f, +1.0f, -0.0f, +0.0f, +1.0f, -0.0f, +0.0f, +1.0f, -0.0f, +0.0f};
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constexpr float tangents[] = { +1.0f, 0.0f, 0.0f, +1.0f, 0.0f, 0.0f, +1.0f, 0.0f, 0.0f, +1.0f, 0.0f, 0.0f,
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+1.0f, 0.0f, 0.0f, +1.0f, 0.0f, 0.0f, +1.0f, 0.0f, 0.0f, +1.0f, 0.0f, 0.0f,
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-1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f,
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+1.0f, 0.0f, 0.0f, +1.0f, 0.0f, 0.0f, +1.0f, 0.0f, 0.0f, +1.0f, 0.0f, 0.0f,
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0.0f, 0.0f,+1.0f, 0.0f, 0.0f,+1.0f, 0.0f, 0.0f,+1.0f, 0.0f, 0.0f,+1.0f,
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0.0f, 0.0f,-1.0f, 0.0f, 0.0f,-1.0f, 0.0f, 0.0f,-1.0f, 0.0f, 0.0f,-1.0f};
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constexpr float tex_coords[] ={ 0.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f,
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0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f,
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1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f,
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0.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f,
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0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f,
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1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f};
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// The associated indices.
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constexpr uint16 indices[]={ 0, 2, 1, 0, 3, 2,
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4, 5, 6, 4, 6, 7,
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8, 9, 10, 8, 10, 11,
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12, 15, 14, 12, 14, 13,
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16, 17, 18, 16, 18, 19,
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20, 23, 22, 20, 22, 21};
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PrimitiveCreater rc(db,vil);
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if(!rc.Init(24))
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return(nullptr);
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rc.WriteVAD(VAN::Position,positions,sizeof(positions));
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if(cci->normal)
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rc.WriteVAD(VAN::Normal,normals,sizeof(normals));
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if(cci->tangent)
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rc.WriteVAD(VAN::Tangent,tangents,sizeof(tangents));
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if(cci->tex_coord)
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rc.WriteVAD(VAN::TexCoord,tex_coords,sizeof(tex_coords));
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if(cci->color_type!=CubeCreateInfo::ColorType::NoColor)
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{
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ENUM_CLASS_RANGE_ERROR_RETURN_NULLPTR(cci->color_type);
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AutoDelete<VB4f> color=rc.CreateVADA<VB4f>(VAN::Color);
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if(color)
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{
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if(cci->color_type==CubeCreateInfo::ColorType::SameColor)
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color->RepeatWrite(cci->color[0],24);
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else
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if(cci->color_type==CubeCreateInfo::ColorType::FaceColor)
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{
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for(uint face=0;face<6;face++)
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color->RepeatWrite(cci->color[face],4);
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}
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else
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if(cci->color_type==CubeCreateInfo::ColorType::VertexColor)
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color->Write(cci->color,24);
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else
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return(nullptr);
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}
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}
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rc.CreateIBO16(6*2*3,indices);
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return rc.Finish();
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}
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template<typename T> void CreateSphereIndices(T *tp,uint numberParallels,const uint numberSlices)
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{
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for (uint i = 0; i < numberParallels; i++)
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{
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for (uint j = 0; j < numberSlices; j++)
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{
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*tp= i * (numberSlices + 1) + j; ++tp;
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*tp=(i + 1) * (numberSlices + 1) + (j + 1); ++tp;
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*tp=(i + 1) * (numberSlices + 1) + j; ++tp;
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*tp= i * (numberSlices + 1) + j; ++tp;
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*tp= i * (numberSlices + 1) + (j + 1); ++tp;
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*tp=(i + 1) * (numberSlices + 1) + (j + 1); ++tp;
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}
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}
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}
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namespace
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{
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constexpr uint GLUS_VERTICES_FACTOR =4;
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constexpr uint GLUS_VERTICES_DIVISOR=4;
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constexpr uint GLUS_MAX_VERTICES =1048576;
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constexpr uint GLUS_MAX_INDICES =GLUS_MAX_VERTICES*GLUS_VERTICES_FACTOR;
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void glusQuaternionRotateRyf(float quaternion[4], const float angle)
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{
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float halfAngleRadian = deg2rad(angle) * 0.5f;
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quaternion[0] = 0.0f;
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quaternion[1] = sin(halfAngleRadian);
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quaternion[2] = 0.0f;
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quaternion[3] = cos(halfAngleRadian);
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}
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void glusQuaternionRotateRzf(float quaternion[4], const float angle)
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{
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float halfAngleRadian = deg2rad(angle) * 0.5f;
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quaternion[0] = 0.0f;
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quaternion[1] = 0.0f;
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quaternion[2] = sin(halfAngleRadian);
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quaternion[3] = cos(halfAngleRadian);
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}
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void glusQuaternionGetMatrix4x4f(float matrix[16], const float quaternion[4])
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{
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float x = quaternion[0];
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float y = quaternion[1];
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float z = quaternion[2];
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float w = quaternion[3];
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matrix[0] = 1.0f - 2.0f * y * y - 2.0f * z * z;
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matrix[1] = 2.0f * x * y + 2.0f * w * z;
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matrix[2] = 2.0f * x * z - 2.0f * w * y;
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matrix[3] = 0.0f;
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matrix[4] = 2.0f * x * y - 2.0f * w * z;
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matrix[5] = 1.0f - 2.0f * x * x - 2.0f * z * z;
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matrix[6] = 2.0f * y * z + 2.0f * w * x;
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matrix[7] = 0.0f;
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matrix[8] = 2.0f * x * z + 2.0f * w * y;
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matrix[9] = 2.0f * y * z - 2.0f * w * x;
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matrix[10] = 1.0f - 2.0f * x * x - 2.0f * y * y;
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matrix[11] = 0.0f;
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matrix[12] = 0.0f;
|
||
matrix[13] = 0.0f;
|
||
matrix[14] = 0.0f;
|
||
matrix[15] = 1.0f;
|
||
}
|
||
|
||
void glusMatrix4x4MultiplyVector3f(float result[3], const float matrix[16], const float vector[3])
|
||
{
|
||
int i;
|
||
|
||
float temp[3];
|
||
|
||
for (i = 0; i < 3; i++)
|
||
{
|
||
temp[i] = matrix[i] * vector[0] + matrix[4 + i] * vector[1] + matrix[8 + i] * vector[2];
|
||
}
|
||
|
||
for (i = 0; i < 3; i++)
|
||
{
|
||
result[i] = temp[i];
|
||
}
|
||
}
|
||
}//namespace
|
||
|
||
/**
|
||
* 创建一个球体的可渲染数据,球心为0,0,0，半径为1
|
||
* @param numberSlices 切片数
|
||
* @return 可渲染数据
|
||
*/
|
||
Primitive *CreateSphere(RenderResource *db,const VIL *vil,const uint numberSlices)
|
||
{
|
||
PrimitiveCreater rc(db,vil);
|
||
|
||
uint numberParallels = (numberSlices+1) / 2;
|
||
uint numberVertices = (numberParallels + 1) * (numberSlices + 1);
|
||
uint numberIndices = numberParallels * numberSlices * 6;
|
||
|
||
const double angleStep = double(2.0f * HGL_PI) / ((double) numberSlices);
|
||
|
||
// used later to help us calculating tangents vectors
|
||
float helpVector[3] = { 1.0f, 0.0f, 0.0f };
|
||
float helpQuaternion[4];
|
||
float helpMatrix[16];
|
||
float tex_x;
|
||
|
||
if(!rc.Init(numberVertices))
|
||
return(nullptr);
|
||
|
||
AutoDelete<VB3f> vertex=rc.CreateVADA<VB3f>(VAN::Position);
|
||
AutoDelete<VB3f> normal=rc.CreateVADA<VB3f>(VAN::Normal);
|
||
AutoDelete<VB3f> tangent=rc.CreateVADA<VB3f>(VAN::Tangent);
|
||
AutoDelete<VB2f> tex_coord=rc.CreateVADA<VB2f>(VAN::TexCoord);
|
||
|
||
float *vp=vertex->Get();
|
||
float *np=normal?normal->Get():nullptr;
|
||
float *tp=tangent?tangent->Get():nullptr;
|
||
float *tcp=tex_coord?tex_coord->Get():nullptr;
|
||
|
||
for (uint i = 0; i < numberParallels + 1; i++)
|
||
{
|
||
for (uint j = 0; j < numberSlices + 1; j++)
|
||
{
|
||
float x = sin(angleStep * (double) i) * sin(angleStep * (double) j);
|
||
float y = sin(angleStep * (double) i) * cos(angleStep * (double) j);
|
||
float z = cos(angleStep * (double) i);
|
||
|
||
*vp=x;++vp;
|
||
*vp=y;++vp;
|
||
*vp=z;++vp;
|
||
|
||
if(np)
|
||
{
|
||
*np=+x;++np;
|
||
*np=-y;++np;
|
||
*np=+z;++np;
|
||
}
|
||
|
||
if(tcp)
|
||
{
|
||
tex_x=(float) j / (float) numberSlices;
|
||
|
||
*tcp=tex_x;++tcp;
|
||
*tcp=1.0f - (float) i / (float) numberParallels;++tcp;
|
||
|
||
if(tp)
|
||
{
|
||
// use quaternion to get the tangent vector
|
||
glusQuaternionRotateRyf(helpQuaternion, 360.0f * tex_x);
|
||
glusQuaternionGetMatrix4x4f(helpMatrix, helpQuaternion);
|
||
|
||
glusMatrix4x4MultiplyVector3f(tp, helpMatrix, helpVector);
|
||
tp+=3;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
if(numberVertices<=0xffff)
|
||
CreateSphereIndices<uint16>(rc.CreateIBO16(numberIndices),numberParallels,numberSlices);
|
||
else
|
||
CreateSphereIndices<uint32>(rc.CreateIBO32(numberIndices),numberParallels,numberSlices);
|
||
|
||
return rc.Finish();
|
||
}
|
||
|
||
Primitive *CreateDome(RenderResource *db,const VIL *vil,const uint numberSlices)
|
||
{
|
||
PrimitiveCreater rc(db,vil);
|
||
|
||
uint i, j;
|
||
|
||
uint numberParallels = numberSlices / 4;
|
||
uint numberVertices = (numberParallels + 1) * (numberSlices + 1);
|
||
uint numberIndices = numberParallels * numberSlices * 6;
|
||
|
||
float angleStep = (2.0f * HGL_PI) / ((float) numberSlices);
|
||
|
||
// used later to help us calculating tangents vectors
|
||
float helpVector[3] = { 1.0f, 0.0f, 0.0f };
|
||
float helpQuaternion[4];
|
||
float helpMatrix[16];
|
||
float tex_x;
|
||
|
||
if (numberSlices < 3 || numberVertices > GLUS_MAX_VERTICES || numberIndices > GLUS_MAX_INDICES)
|
||
return nullptr;
|
||
|
||
if(!rc.Init(numberVertices))
|
||
return(nullptr);
|
||
|
||
AutoDelete<VB3f> vertex=rc.CreateVADA<VB3f>(VAN::Position);
|
||
AutoDelete<VB3f> normal=rc.CreateVADA<VB3f>(VAN::Normal);
|
||
AutoDelete<VB3f> tangent=rc.CreateVADA<VB3f>(VAN::Tangent);
|
||
AutoDelete<VB2f> tex_coord=rc.CreateVADA<VB2f>(VAN::TexCoord);
|
||
|
||
float *vp=vertex->Get();
|
||
float *np=normal?normal->Get():nullptr;
|
||
float *tp=tangent?tangent->Get():nullptr;
|
||
float *tcp=tex_coord?tex_coord->Get():nullptr;
|
||
|
||
for (i = 0; i < numberParallels + 1; i++)
|
||
{
|
||
for (j = 0; j < numberSlices + 1; j++)
|
||
{
|
||
uint vertexIndex = (i * (numberSlices + 1) + j) * 4;
|
||
uint normalIndex = (i * (numberSlices + 1) + j) * 3;
|
||
uint tangentIndex = (i * (numberSlices + 1) + j) * 3;
|
||
uint texCoordsIndex = (i * (numberSlices + 1) + j) * 2;
|
||
|
||
float x = sin(angleStep * (double) i) * sin(angleStep * (double) j);
|
||
float y = sin(angleStep * (double) i) * cos(angleStep * (double) j);
|
||
float z = cos(angleStep * (double) i);
|
||
|
||
*vp=x;++vp;
|
||
*vp=y;++vp;
|
||
*vp=z;++vp;
|
||
|
||
if(np)
|
||
{
|
||
*np=+x;++np;
|
||
*np=-y;++np;
|
||
*np=+z;++np;
|
||
}
|
||
|
||
if(tcp)
|
||
{
|
||
tex_x=(float) j / (float) numberSlices;
|
||
|
||
*tcp=tex_x;++tcp;
|
||
*tcp=1.0f - (float) i / (float) numberParallels;++tcp;
|
||
|
||
if(tp)
|
||
{
|
||
// use quaternion to get the tangent vector
|
||
glusQuaternionRotateRyf(helpQuaternion, 360.0f * tex_x);
|
||
glusQuaternionGetMatrix4x4f(helpMatrix, helpQuaternion);
|
||
|
||
glusMatrix4x4MultiplyVector3f(tp, helpMatrix, helpVector);
|
||
tp+=3;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
if(numberVertices<=0xffff)
|
||
CreateSphereIndices<uint16>(rc.CreateIBO16(numberIndices),numberParallels,numberSlices);
|
||
else
|
||
CreateSphereIndices<uint32>(rc.CreateIBO32(numberIndices),numberParallels,numberSlices);
|
||
|
||
return rc.Finish();
|
||
}
|
||
|
||
namespace
|
||
{
|
||
template<typename T>
|
||
void CreateTorusIndices(T *tp,uint numberSlices,uint numberStacks)
|
||
{
|
||
// loop counters
|
||
uint sideCount, faceCount;
|
||
|
||
// used to generate the indices
|
||
uint v0, v1, v2, v3;
|
||
|
||
for (sideCount = 0; sideCount < numberSlices; ++sideCount)
|
||
{
|
||
for (faceCount = 0; faceCount < numberStacks; ++faceCount)
|
||
{
|
||
// get the number of the vertices for a face of the torus. They must be < numVertices
|
||
v0 = ((sideCount * (numberStacks + 1)) + faceCount);
|
||
v1 = (((sideCount + 1) * (numberStacks + 1)) + faceCount);
|
||
v2 = (((sideCount + 1) * (numberStacks + 1)) + (faceCount + 1));
|
||
v3 = ((sideCount * (numberStacks + 1)) + (faceCount + 1));
|
||
|
||
// first triangle of the face, counter clock wise winding
|
||
*tp = v0; ++tp;
|
||
*tp = v2; ++tp;
|
||
*tp = v1; ++tp;
|
||
|
||
// second triangle of the face, counter clock wise winding
|
||
*tp = v0; ++tp;
|
||
*tp = v3; ++tp;
|
||
*tp = v2; ++tp;
|
||
}
|
||
}
|
||
}
|
||
}//namespace
|
||
|
||
Primitive *CreateTorus(RenderResource *db,const VIL *vil,const TorusCreateInfo *tci)
|
||
{
|
||
PrimitiveCreater rc(db,vil);
|
||
|
||
// s, t = parametric values of the equations, in the range [0,1]
|
||
float s = 0;
|
||
float t = 0;
|
||
|
||
// sIncr, tIncr are increment values aplied to s and t on each loop iteration to generate the torus
|
||
float sIncr;
|
||
float tIncr;
|
||
|
||
// to store precomputed sin and cos values
|
||
float cos2PIs, sin2PIs, cos2PIt, sin2PIt;
|
||
|
||
uint sideCount,faceCount;
|
||
|
||
uint numberVertices;
|
||
uint numberIndices;
|
||
|
||
// used later to help us calculating tangents vectors
|
||
float helpVector[3] = { 0.0f, 1.0f, 0.0f };
|
||
float helpQuaternion[4];
|
||
float helpMatrix[16];
|
||
|
||
float torusRadius = (tci->outerRadius - tci->innerRadius) / 2.0f;
|
||
float centerRadius = tci->outerRadius - torusRadius;
|
||
|
||
numberVertices = (tci->numberStacks + 1) * (tci->numberSlices + 1);
|
||
numberIndices = tci->numberStacks * tci->numberSlices * 2 * 3; // 2 triangles per face * 3 indices per triangle
|
||
|
||
if (tci->numberSlices < 3 || tci->numberStacks < 3 || numberVertices > GLUS_MAX_VERTICES || numberIndices > GLUS_MAX_INDICES)
|
||
return(nullptr);
|
||
|
||
sIncr = 1.0f / (float) tci->numberSlices;
|
||
tIncr = 1.0f / (float) tci->numberStacks;
|
||
|
||
if(!rc.Init(numberVertices))
|
||
return(nullptr);
|
||
|
||
AutoDelete<VB3f> vertex=rc.CreateVADA<VB3f>(VAN::Position);
|
||
AutoDelete<VB3f> normal=rc.CreateVADA<VB3f>(VAN::Normal);
|
||
AutoDelete<VB3f> tangent=rc.CreateVADA<VB3f>(VAN::Tangent);
|
||
AutoDelete<VB2f> tex_coord=rc.CreateVADA<VB2f>(VAN::TexCoord);
|
||
|
||
float *vp=vertex->Get();
|
||
float *np=normal?normal->Get():nullptr;
|
||
float *tp=tangent?tangent->Get():nullptr;
|
||
float *tcp=tex_coord?tex_coord->Get():nullptr;
|
||
|
||
// generate vertices and its attributes
|
||
for (sideCount = 0; sideCount <= tci->numberSlices; ++sideCount, s += sIncr)
|
||
{
|
||
// precompute some values
|
||
cos2PIs = cos(2.0f * HGL_PI * s);
|
||
sin2PIs = sin(2.0f * HGL_PI * s);
|
||
|
||
t = 0.0f;
|
||
for (faceCount = 0; faceCount <= tci->numberStacks; ++faceCount, t += tIncr)
|
||
{
|
||
// precompute some values
|
||
cos2PIt = cos(2.0f * HGL_PI * t);
|
||
sin2PIt = sin(2.0f * HGL_PI * t);
|
||
|
||
// generate vertex and stores it in the right position
|
||
*vp = (centerRadius + torusRadius * cos2PIt) * cos2PIs; ++vp;
|
||
*vp = torusRadius * sin2PIt; ++vp;
|
||
*vp = (centerRadius + torusRadius * cos2PIt) * sin2PIs; ++vp;
|
||
|
||
if(np)
|
||
{
|
||
// generate normal and stores it in the right position
|
||
// NOTE: cos (2PIx) = cos (x) and sin (2PIx) = sin (x) so, we can use this formula
|
||
// normal = {cos(2PIs)cos(2PIt) , sin(2PIs)cos(2PIt) ,sin(2PIt)}
|
||
*np = +cos2PIs * cos2PIt; ++np;
|
||
*np = -sin2PIt; ++np;
|
||
*np = +sin2PIs * cos2PIt; ++np;
|
||
}
|
||
|
||
if(tcp)
|
||
{
|
||
// generate texture coordinates and stores it in the right position
|
||
*tcp = s*tci->uv_scale.x; ++tcp;
|
||
*tcp = t*tci->uv_scale.y; ++tcp;
|
||
}
|
||
|
||
if(tp)
|
||
{
|
||
// use quaternion to get the tangent vector
|
||
glusQuaternionRotateRzf(helpQuaternion, 360.0f * s);
|
||
glusQuaternionGetMatrix4x4f(helpMatrix, helpQuaternion);
|
||
|
||
glusMatrix4x4MultiplyVector3f(tp, helpMatrix, helpVector);
|
||
tp+=3;
|
||
}
|
||
}
|
||
}
|
||
|
||
if(numberVertices<=0xffff)
|
||
CreateTorusIndices<uint16>(rc.CreateIBO16(numberIndices),tci->numberSlices,tci->numberStacks);
|
||
else
|
||
CreateTorusIndices<uint32>(rc.CreateIBO32(numberIndices),tci->numberSlices,tci->numberStacks);
|
||
|
||
return rc.Finish();
|
||
}
|
||
|
||
namespace
|
||
{
|
||
template<typename T>
|
||
void CreateCylinderIndices(T *tp,const uint numberSlices)
|
||
{
|
||
uint i;
|
||
|
||
T centerIndex = 0;
|
||
T indexCounter = 1;
|
||
|
||
for (i = 0; i < numberSlices; i++)
|
||
{
|
||
*tp = centerIndex; ++tp;
|
||
*tp = indexCounter; ++tp;
|
||
*tp = indexCounter + 1; ++tp;
|
||
|
||
indexCounter++;
|
||
}
|
||
indexCounter++;
|
||
|
||
// Top
|
||
centerIndex = indexCounter;
|
||
indexCounter++;
|
||
|
||
for (i = 0; i < numberSlices; i++)
|
||
{
|
||
*tp = centerIndex; ++tp;
|
||
*tp = indexCounter + 1; ++tp;
|
||
*tp = indexCounter; ++tp;
|
||
|
||
indexCounter++;
|
||
}
|
||
indexCounter++;
|
||
|
||
// Sides
|
||
for (i = 0; i < numberSlices; i++)
|
||
{
|
||
*tp = indexCounter; ++tp;
|
||
*tp = indexCounter + 1; ++tp;
|
||
*tp = indexCounter + 2; ++tp;
|
||
|
||
*tp = indexCounter + 2; ++tp;
|
||
*tp = indexCounter + 1; ++tp;
|
||
*tp = indexCounter + 3; ++tp;
|
||
|
||
indexCounter += 2;
|
||
}
|
||
}
|
||
}//namespace
|
||
|
||
Primitive *CreateCylinder(RenderResource *db,const VIL *vil,const CylinderCreateInfo *cci)
|
||
{
|
||
uint numberIndices = cci->numberSlices * 3 * 2 + cci->numberSlices * 6;
|
||
|
||
if(numberIndices<=0)
|
||
return(nullptr);
|
||
|
||
PrimitiveCreater rc(db,vil);
|
||
|
||
uint numberVertices = (cci->numberSlices + 2) * 2 + (cci->numberSlices + 1) * 2;
|
||
|
||
if(!rc.Init(numberVertices))
|
||
return(nullptr);
|
||
|
||
float angleStep = (2.0f * HGL_PI) / ((float) cci->numberSlices);
|
||
|
||
if (cci->numberSlices < 3 || numberVertices > GLUS_MAX_VERTICES || numberIndices > GLUS_MAX_INDICES)
|
||
return nullptr;
|
||
|
||
AutoDelete<VB3f> vertex=rc.CreateVADA<VB3f>(VAN::Position);
|
||
AutoDelete<VB3f> normal=rc.CreateVADA<VB3f>(VAN::Normal);
|
||
AutoDelete<VB3f> tangent=rc.CreateVADA<VB3f>(VAN::Tangent);
|
||
AutoDelete<VB2f> tex_coord=rc.CreateVADA<VB2f>(VAN::TexCoord);
|
||
|
||
float *vp=vertex->Get();
|
||
float *np=normal?normal->Get():nullptr;
|
||
float *tp=tangent?tangent->Get():nullptr;
|
||
float *tcp=tex_coord?tex_coord->Get():nullptr;
|
||
|
||
*vp = 0.0f; ++vp;
|
||
*vp = 0.0f; ++vp;
|
||
*vp = -cci->halfExtend; ++vp;
|
||
|
||
if(np)
|
||
{
|
||
*np = 0.0f; ++np;
|
||
*np = 0.0f; ++np;
|
||
*np =-1.0f; ++np;
|
||
}
|
||
|
||
if(tp)
|
||
{
|
||
*tp = 0.0f; ++tp;
|
||
*tp = 1.0f; ++tp;
|
||
*tp = 0.0f; ++tp;
|
||
}
|
||
|
||
if(tcp)
|
||
{
|
||
*tcp = 0.0f; ++tcp;
|
||
*tcp = 0.0f; ++tcp;
|
||
}
|
||
|
||
for(uint i = 0; i < cci->numberSlices + 1; i++)
|
||
{
|
||
float currentAngle = angleStep * (float)i;
|
||
|
||
*vp = cos(currentAngle) * cci->radius; ++vp;
|
||
*vp = -sin(currentAngle) * cci->radius; ++vp;
|
||
*vp = -cci->halfExtend; ++vp;
|
||
|
||
if(np)
|
||
{
|
||
*np = 0.0f; ++np;
|
||
*np = 0.0f; ++np;
|
||
*np =-1.0f; ++np;
|
||
}
|
||
|
||
if(tp)
|
||
{
|
||
*tp = sin(currentAngle); ++tp;
|
||
*tp = cos(currentAngle); ++tp;
|
||
*tp = 0.0f; ++tp;
|
||
}
|
||
|
||
if(tcp)
|
||
{
|
||
*tcp = 0.0f; ++tcp;
|
||
*tcp = 0.0f; ++tcp;
|
||
}
|
||
}
|
||
|
||
*vp = 0.0f; ++vp;
|
||
*vp = 0.0f; ++vp;
|
||
*vp = cci->halfExtend; ++vp;
|
||
|
||
if(np)
|
||
{
|
||
*np = 0.0f; ++np;
|
||
*np = 0.0f; ++np;
|
||
*np = 1.0f; ++np;
|
||
}
|
||
|
||
if(tp)
|
||
{
|
||
*tp = 0.0f; ++tp;
|
||
*tp = -1.0f; ++tp;
|
||
*tp = 0.0f; ++tp;
|
||
}
|
||
|
||
if(tcp)
|
||
{
|
||
*tcp = 1.0f; ++tcp;
|
||
*tcp = 1.0f; ++tcp;
|
||
}
|
||
|
||
for(uint i = 0; i < cci->numberSlices + 1; i++)
|
||
{
|
||
float currentAngle = angleStep * (float)i;
|
||
|
||
*vp = cos(currentAngle) * cci->radius; ++vp;
|
||
*vp = -sin(currentAngle) * cci->radius; ++vp;
|
||
*vp = cci->halfExtend; ++vp;
|
||
|
||
if(np)
|
||
{
|
||
*np = 0.0f; ++np;
|
||
*np = 0.0f; ++np;
|
||
*np = 1.0f; ++np;
|
||
}
|
||
|
||
if(tp)
|
||
{
|
||
*tp = -sin(currentAngle); ++tp;
|
||
*tp = -cos(currentAngle); ++tp;
|
||
*tp = 0.0f; ++tp;
|
||
}
|
||
|
||
if(tcp)
|
||
{
|
||
*tcp = 1.0f; ++tcp;
|
||
*tcp = 1.0f; ++tcp;
|
||
}
|
||
}
|
||
|
||
for(uint i = 0; i < cci->numberSlices + 1; i++)
|
||
{
|
||
float currentAngle = angleStep * (float)i;
|
||
|
||
float sign = -1.0f;
|
||
|
||
for (uint j = 0; j < 2; j++)
|
||
{
|
||
*vp = cos(currentAngle) * cci->radius; ++vp;
|
||
*vp = -sin(currentAngle) * cci->radius; ++vp;
|
||
*vp = cci->halfExtend * sign; ++vp;
|
||
|
||
if(np)
|
||
{
|
||
*np = cos(currentAngle); ++np;
|
||
*np = sin(currentAngle); ++np;
|
||
*np = 0.0f; ++np;
|
||
}
|
||
|
||
if(tp)
|
||
{
|
||
*tp = -sin(currentAngle); ++tp;
|
||
*tp = -cos(currentAngle); ++tp;
|
||
*tp = 0.0f; ++tp;
|
||
}
|
||
|
||
if(tcp)
|
||
{
|
||
*tcp = (float)i / (float)cci->numberSlices; ++tcp;
|
||
*tcp = (sign + 1.0f) / 2.0f; ++tcp;
|
||
}
|
||
|
||
sign = 1.0f;
|
||
}
|
||
}
|
||
|
||
if(numberVertices<=0xffff)
|
||
CreateCylinderIndices<uint16>(rc.CreateIBO16(numberIndices),cci->numberSlices);
|
||
else
|
||
CreateCylinderIndices<uint32>(rc.CreateIBO32(numberIndices),cci->numberSlices);
|
||
|
||
return rc.Finish();
|
||
}
|
||
|
||
namespace
|
||
{
|
||
template<typename T>
|
||
void CreateConeIndices(T *tp,const uint numberSlices,const uint numberStacks)
|
||
{
|
||
// Bottom
|
||
uint centerIndex = 0;
|
||
uint indexCounter = 1;
|
||
uint i,j;
|
||
|
||
for (i = 0; i < numberSlices; i++)
|
||
{
|
||
*tp = centerIndex; ++tp;
|
||
*tp = indexCounter; ++tp;
|
||
*tp = indexCounter + 1; ++tp;
|
||
|
||
indexCounter++;
|
||
}
|
||
indexCounter++;
|
||
|
||
// Sides
|
||
for (j = 0; j < numberStacks; j++)
|
||
{
|
||
for (i = 0; i < numberSlices; i++)
|
||
{
|
||
*tp = indexCounter; ++tp;
|
||
*tp = indexCounter + numberSlices + 1; ++tp;
|
||
*tp = indexCounter + 1; ++tp;
|
||
|
||
*tp = indexCounter + 1; ++tp;
|
||
*tp = indexCounter + numberSlices + 1; ++tp;
|
||
*tp = indexCounter + numberSlices + 2; ++tp;
|
||
|
||
indexCounter++;
|
||
}
|
||
indexCounter++;
|
||
}
|
||
}
|
||
}//namespace
|
||
|
||
Primitive *CreateCone(RenderResource *db,const VIL *vil,const ConeCreateInfo *cci)
|
||
{
|
||
PrimitiveCreater rc(db,vil);
|
||
|
||
uint i, j;
|
||
|
||
uint numberVertices = (cci->numberSlices + 2) + (cci->numberSlices + 1) * (cci->numberStacks + 1);
|
||
|
||
if(!rc.Init(numberVertices))
|
||
return(nullptr);
|
||
|
||
uint numberIndices = cci->numberSlices * 3 + cci->numberSlices * 6 * cci->numberStacks;
|
||
|
||
float angleStep = (2.0f * HGL_PI) / ((float) cci->numberSlices);
|
||
|
||
float h = 2.0f * cci->halfExtend;
|
||
float r = cci->radius;
|
||
float l = sqrtf(h*h + r*r);
|
||
|
||
if (cci->numberSlices < 3 || cci->numberStacks < 1 || numberVertices > GLUS_MAX_VERTICES || numberIndices > GLUS_MAX_INDICES)
|
||
return nullptr;
|
||
|
||
AutoDelete<VB3f> vertex=rc.CreateVADA<VB3f>(VAN::Position);
|
||
AutoDelete<VB3f> normal=rc.CreateVADA<VB3f>(VAN::Normal);
|
||
AutoDelete<VB3f> tangent=rc.CreateVADA<VB3f>(VAN::Tangent);
|
||
AutoDelete<VB2f> tex_coord=rc.CreateVADA<VB2f>(VAN::TexCoord);
|
||
|
||
float *vp=vertex->Get();
|
||
float *np=normal?normal->Get():nullptr;
|
||
float *tp=tangent?tangent->Get():nullptr;
|
||
float *tcp=tex_coord?tex_coord->Get():nullptr;
|
||
|
||
*vp = 0.0f; ++vp;
|
||
*vp = 0.0f; ++vp;
|
||
*vp = -cci->halfExtend; ++vp;
|
||
|
||
if(np)
|
||
{
|
||
*np = 0.0f;++np;
|
||
*np = 0.0f;++np;
|
||
*np =-1.0f;++np;
|
||
}
|
||
|
||
if(tp)
|
||
{
|
||
*tp = 0.0f; ++tp;
|
||
*tp = 1.0f; ++tp;
|
||
*tp = 0.0f; ++tp;
|
||
}
|
||
|
||
if(tcp)
|
||
{
|
||
*tcp = 0.0f; ++tcp;
|
||
*tcp = 0.0f; ++tcp;
|
||
}
|
||
|
||
for (i = 0; i < cci->numberSlices + 1; i++)
|
||
{
|
||
float currentAngle = angleStep * (float)i;
|
||
|
||
*vp = cos(currentAngle) * cci->radius; ++vp;
|
||
*vp = -sin(currentAngle) * cci->radius; ++vp;
|
||
*vp = -cci->halfExtend; ++vp;
|
||
|
||
if(np)
|
||
{
|
||
*np = 0.0f;++np;
|
||
*np = 0.0f;++np;
|
||
*np =-1.0f;++np;
|
||
}
|
||
|
||
if(tp)
|
||
{
|
||
*tp = sin(currentAngle); ++tp;
|
||
*tp = cos(currentAngle); ++tp;
|
||
*tp = 0.0f; ++tp;
|
||
}
|
||
|
||
if(tcp)
|
||
{
|
||
*tcp = 0.0f; ++tcp;
|
||
*tcp = 0.0f; ++tcp;
|
||
}
|
||
}
|
||
|
||
for (j = 0; j < cci->numberStacks + 1; j++)
|
||
{
|
||
float level = (float)j / (float)cci->numberStacks;
|
||
|
||
for (i = 0; i < cci->numberSlices + 1; i++)
|
||
{
|
||
float currentAngle = angleStep * (float)i;
|
||
|
||
*vp = cos(currentAngle) * cci->radius * (1.0f - level); ++vp;
|
||
*vp = -sin(currentAngle) * cci->radius * (1.0f - level); ++vp;
|
||
*vp = -cci->halfExtend + 2.0f * cci->halfExtend * level; ++vp;
|
||
|
||
if(np)
|
||
{
|
||
*np = h / l * cos(currentAngle); ++np;
|
||
*np = h / l * sin(currentAngle); ++np;
|
||
*np = r / l; ++np;
|
||
}
|
||
|
||
if(tp)
|
||
{
|
||
*tp = -sin(currentAngle); ++tp;
|
||
*tp = -cos(currentAngle); ++tp;
|
||
*tp = 0.0f; ++tp;
|
||
}
|
||
|
||
if(tcp)
|
||
{
|
||
*tcp = (float)i / (float)cci->numberSlices; ++tcp;
|
||
*tcp = level; ++tcp;
|
||
}
|
||
}
|
||
}
|
||
|
||
if(numberVertices<=0xffff)
|
||
CreateConeIndices<uint16>(rc.CreateIBO16(numberIndices),cci->numberSlices,cci->numberStacks);
|
||
else
|
||
CreateConeIndices<uint32>(rc.CreateIBO32(numberIndices),cci->numberSlices,cci->numberStacks);
|
||
|
||
return rc.Finish();
|
||
}
|
||
|
||
Primitive *CreateAxis(RenderResource *db,const VIL *vil,const AxisCreateInfo *aci)
|
||
{
|
||
if(!db||!vil||!aci)return(nullptr);
|
||
|
||
PrimitiveCreater rc(db,vil);
|
||
|
||
if(!rc.Init(6))
|
||
return(nullptr);
|
||
|
||
AutoDelete<VB3f> vertex=rc.CreateVADA<VB3f>(VAN::Position);
|
||
AutoDelete<VB4f> color=rc.CreateVADA<VB4f>(VAN::Color);
|
||
|
||
if(!vertex||!color)
|
||
return(nullptr);
|
||
|
||
const float s=aci->size;
|
||
|
||
vertex->Write(0,0,0);color->Write(aci->color[0]);
|
||
vertex->Write(s,0,0);color->Write(aci->color[0]);
|
||
vertex->Write(0,0,0);color->Write(aci->color[1]);
|
||
vertex->Write(0,s,0);color->Write(aci->color[1]);
|
||
vertex->Write(0,0,0);color->Write(aci->color[2]);
|
||
vertex->Write(0,0,s);color->Write(aci->color[2]);
|
||
|
||
return rc.Finish();
|
||
}
|
||
|
||
Primitive *CreateBoundingBox(RenderResource *db,const VIL *vil,const BoundingBoxCreateInfo *cci)
|
||
{
|
||
// Points of a cube.
|
||
/* 4 5 */ const float points[]={ -0.5,-0.5, 0.5, 0.5,-0.5,0.5, 0.5,-0.5,-0.5, -0.5,-0.5,-0.5,
|
||
/* *------------* */ -0.5, 0.5, 0.5, 0.5, 0.5,0.5, 0.5, 0.5,-0.5, -0.5, 0.5,-0.5};
|
||
/* /| /| */
|
||
/* 0/ | 1/ | */
|
||
/* *--+---------* | */
|
||
/* | | | | */
|
||
/* | 7| | 6| */
|
||
/* | *---------+--* */
|
||
/* | / | / */
|
||
/* |/ 2|/ */
|
||
/* 3*------------* */
|
||
|
||
const uint16 indices[]=
|
||
{
|
||
0,1, 1,2, 2,3, 3,0,
|
||
4,5, 5,6, 6,7, 7,4,
|
||
0,4, 1,5, 2,6, 3,7
|
||
};
|
||
|
||
PrimitiveCreater rc(db,vil);
|
||
|
||
if(!rc.Init(8))
|
||
return(nullptr);
|
||
|
||
AutoDelete<VB3f> vertex=rc.CreateVADA<VB3f>(VAN::Position);
|
||
|
||
if(!vertex)return(nullptr);
|
||
|
||
rc.WriteVAD(VAN::Position,points,sizeof(points));
|
||
|
||
if(cci->color_type!=BoundingBoxCreateInfo::ColorType::NoColor)
|
||
{
|
||
ENUM_CLASS_RANGE_ERROR_RETURN_NULLPTR(cci->color_type);
|
||
|
||
AutoDelete<VB4f> color=rc.CreateVADA<VB4f>(VAN::Color);
|
||
|
||
if(color)
|
||
{
|
||
if(cci->color_type==BoundingBoxCreateInfo::ColorType::SameColor)
|
||
color->RepeatWrite(cci->color[0],8);
|
||
else
|
||
if(cci->color_type==BoundingBoxCreateInfo::ColorType::VertexColor)
|
||
color->Write(cci->color,8);
|
||
}
|
||
}
|
||
|
||
rc.CreateIBO16(24,indices);
|
||
|
||
return rc.Finish();
|
||
}
|
||
}//namespace inline_geometry
|
||
}//namespace graph
|
||
}//namespace hgl
|