YSRESULT YsShellExt_SweepInfoMultiStep::SetUpNonParallelSweepWithPath(const YsShellExt &shl,YSSIZE_T nPathVt,const YsShellVertexHandle pathVtHdArrayIn[],YSBOOL isLoop,const YsVec3 nom[],const double scaling[])
{
const auto &allVtHd=GetVertexAll(); // Need the original normal.
CleanUpLayer();
if(2<=nPathVt)
{
YsConstArrayMask <YsShellVertexHandle> pathVtHd(nPathVt,pathVtHdArrayIn);
YsArray <YsVec3> pathPnt(nPathVt,NULL);
for(YSSIZE_T idx=0; idx<pathVtHd.GetN(); ++idx)
{
pathPnt[idx]=shl.GetVertexPosition(pathVtHd[idx]);
}
const YSSIZE_T nLayer=(YSTRUE==isLoop ? nPathVt : nPathVt-1);
SetUpNLayer(shl,nLayer+1); // First set of vertices are not counted as a layer. Number of layers will be nPathVt-1.
// Rotation must be progressive. Why? Assume nom[0] and nom[5] are 180 degrees opposite.
// If the rotation is calculated for each layer by YsRotation::MakeAtoB(nom[0],nom[layerIndex]),
// rotational axis for nom[5] may become different from other layers, and thus the continuity is lost.
// The solution is calculating the rotation for each step progressively.
YsArray <YsMatrix3x3> rot(nPathVt-1,NULL);
YsMatrix3x3 prevRot;
for(int layerIdx=0; layerIdx<nPathVt-1; ++layerIdx)
{
YsRotation thisRot;
thisRot.MakeAtoB(nom[layerIdx],nom[layerIdx+1]);
prevRot*=thisRot;
rot[layerIdx]=prevRot;
}
for(auto layerIdx=0; layerIdx<nPathVt-1; ++layerIdx)
{
YsMatrix4x4 tfm;
tfm.Translate(pathPnt[layerIdx+1]);
tfm*=rot[layerIdx];
tfm.Scale(scaling[layerIdx+1],scaling[layerIdx+1],scaling[layerIdx+1]);
tfm.Translate(-pathPnt[0]);
for(auto vtHd : allVtHd)
{
YSSIZE_T indexInLayer;
if(YSOK==srcVtKeyToMidPointIndex.FindElement(indexInLayer,shl.GetSearchKey(vtHd)))
{
auto &point=layerArray[layerIdx].pointArray[indexInLayer];
if(vtHd==pathVtHd[0])
{
point.vtHd=pathVtHd[layerIdx+1];
point.pos=shl.GetVertexPosition(pathVtHd[layerIdx+1]);
}
else
{
point.vtHd=NULL;
point.pos=tfm*shl.GetVertexPosition(vtHd);
}
}
}
}
if(YSTRUE==isLoop)
{
for(auto vtHd : allVtHd)
{
YSSIZE_T indexInLayer;
if(YSOK==srcVtKeyToMidPointIndex.FindElement(indexInLayer,shl.GetSearchKey(vtHd)))
{
auto &point=layerArray[nLayer-1].pointArray[indexInLayer];
point.vtHd=vtHd;
point.pos=shl.GetVertexPosition(vtHd);
}
}
}
return YSOK;
}
return YSERR;
}
/* virtual */ void FsLazyWindowApplication::Draw(void)
{
int wid,hei;
FsGetWindowSize(wid,hei);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glEnable(GL_DEPTH_TEST);
drawEnv.SetProjectionMode(YsProjectionTransformation::PERSPECTIVE);
drawEnv.SetAspectRatio((double)wid/(double)hei);
drawEnv.SetFOVY(YsPi/4.0);
drawEnv.SetNearFar(0.1,100.0);
drawEnv.SetViewTarget((min+max)/2.0);
drawEnv.SetViewDistance((max-min).GetLength());
GLfloat projMat[16];
drawEnv.GetProjectionMatrix().GetOpenGlCompatibleMatrix(projMat);
auto &view=drawEnv.GetViewMatrix();
YsMatrix4x4 modeling;
YsMatrix4x4 fullMatrix=view*modeling;
GLfloat viewMat[16];
fullMatrix.GetOpenGlCompatibleMatrix(viewMat);
{
YsGLSLPlain3DRenderer renderer; // Again, do not nest the renderer!
renderer.SetProjection(projMat);
renderer.SetModelView(viewMat);
GLfloat color[8]={0,0,1,1, 1,0,0,1};
const GLfloat vtx[6]=
{
lastClick[0].xf(),lastClick[0].yf(),lastClick[0].zf(),
lastClick[1].xf(),lastClick[1].yf(),lastClick[1].zf()
};
renderer.DrawVtxCol(GL_LINES,2,vtx,color);
glEnable(GL_PROGRAM_POINT_SIZE);
renderer.SetUniformPointSize(3.0);
renderer.DrawVtx(GL_POINTS,cellVtx.size()/3,cellVtx.data());
}
{
GLfloat lightDir[]={0,0,1};
YsGLSLShaded3DRenderer renderer; // Again, do not nest the renderer!
renderer.SetProjection(projMat);
renderer.SetModelView(viewMat);
renderer.SetLightDirectionInCameraCoordinate(0,lightDir);
renderer.DrawVtxNomCol(GL_TRIANGLES,vtx.size()/3,vtx.data(),nom.data(),col.data());
}
YsMatrix4x4 shadowMat;
shadowMat.Translate(0.0,-12.0,0.0);
shadowMat.Scale(1.0,0.0,1.0);
fullMatrix=view*shadowMat*modeling;
fullMatrix.GetOpenGlCompatibleMatrix(viewMat);
{
GLfloat color[]={0,0,0,1};
YsGLSLPlain3DRenderer renderer; // Again, do not nest the renderer!
renderer.SetProjection(projMat);
renderer.SetModelView(viewMat);
renderer.SetUniformColor(color);
renderer.DrawVtx(GL_TRIANGLES,vtx.size()/3,vtx.data());
}
FsSwapBuffers();
needRedraw=false;
}