From 944ca45ab7fb8395a2d5c268884446aee2084677 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20Ulman?= <ulman@mpi-cbg.de>
Date: Thu, 6 Oct 2016 14:53:35 +0200
Subject: [PATCH] Added initial (just contour yet) rendering of meshes into
mask images.
---
CMakeLists.txt | 13 ++++
cmath3d/TriangleMesh.cpp | 164 +++++++++++++++++++++++++++++++++++++++
cmath3d/TriangleMesh.h | 3 +
src/main.cpp | 13 +++-
src/params.h | 3 +
5 files changed, 193 insertions(+), 3 deletions(-)
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8c76f7c..ed99db4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -55,6 +55,12 @@ else (WIN32)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fopenmp")
endif (WIN32)
+#
+# due to Lapack+i3dalgo
+#
+
+SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Xlinker -defsym -Xlinker MAIN__=main")
+
#
# user defined options
#
@@ -102,6 +108,13 @@ include_directories(${INC_GSL})
find_library(LIB_LAPACK lapack)
set(LIBS ${LIBS} ${LIB_LAPACK})
+# i3dlibs libraries
+find_path(INC_I3D "i3d/image3d.h")
+include_directories(${INC_I3D})
+find_library(LIB_I3DCORE i3dcore)
+find_library(LIB_I3DALGO i3dalgo)
+set(LIBS ${LIBS} ${LIB_I3DCORE} ${LIB_I3DALGO})
+
#--------------
# SOURCE FILES
#--------------
diff --git a/cmath3d/TriangleMesh.cpp b/cmath3d/TriangleMesh.cpp
index 179df5a..229f7ed 100644
--- a/cmath3d/TriangleMesh.cpp
+++ b/cmath3d/TriangleMesh.cpp
@@ -190,6 +190,170 @@ int ActiveMesh::ImportVTK(const char *filename)
}
+void ActiveMesh::RenderMask(i3d::Image3d<i3d::GRAY16>& mask)
+{
+ //time savers: resolution
+ const float xRes=mask.GetResolution().GetX();
+ const float yRes=mask.GetResolution().GetY();
+ const float zRes=mask.GetResolution().GetZ();
+
+ //time savers: offset
+ const float xOff=mask.GetOffset().x;
+ const float yOff=mask.GetOffset().y;
+ const float zOff=mask.GetOffset().z;
+
+ //over all triangles
+ for (unsigned int i=0; i < ID.size()/3; ++i)
+ //for (unsigned int i=0; i < 15; ++i)
+ {
+ const Vector3F& v1=Pos[ID[3*i+0]];
+ const Vector3F& v2=Pos[ID[3*i+1]];
+ const Vector3F& v3=Pos[ID[3*i+2]];
+
+ //sweeping (and rendering) the triangle
+ for (float c=0.f; c <= 1.0f; c += 0.1f)
+ for (float b=0.f; b <= (1.0f-c); b += 0.1f)
+ {
+ float a=1.0f -b -c;
+
+ Vector3F v=a*v1;
+ v+=b*v2;
+ v+=c*v3;
+
+ //std::cout << "ID #" << i << ": v=(" << v.x << "," << v.y << "," << v.z << ")\n";
+
+ //nearest neighbor pixel coordinate
+ const int x=(int)roundf( (v.x-xOff) *xRes);
+ const int y=(int)roundf( (v.y-yOff) *yRes);
+ const int z=(int)roundf( (v.z-zOff) *zRes);
+
+ if (mask.Include(x,y,z)) mask.SetVoxel(x,y,z,i);
+ }
+ }
+}
+
+
+void ActiveMesh::RenderMaskB(i3d::Image3d<i3d::GRAY16>& mask)
+{
+ //time savers: resolution
+ const float xRes=mask.GetResolution().GetX();
+ const float yRes=mask.GetResolution().GetY();
+ const float zRes=mask.GetResolution().GetZ();
+
+ //time savers: offset
+ const float xOff=mask.GetOffset().x;
+ const float yOff=mask.GetOffset().y;
+ const float zOff=mask.GetOffset().z;
+
+ //over all triangles
+ //for (unsigned int i=0; i < ID.size()/3; ++i)
+ for (unsigned int i=0; i < 15; ++i)
+ {
+ const Vector3F& v1=Pos[ID[3*i+0]];
+ const Vector3F& v2=Pos[ID[3*i+1]];
+ const Vector3F& v3=Pos[ID[3*i+2]];
+
+ //Vector3F e12=v2-v1; //ID=0
+ //Vector3F e13=v3-v1; //ID=1
+ //Vector3F e23=v3-v2; //ID=2
+ Vector3F edges[3]={v2-v1,v3-v1,v3-v2};
+
+ short order[3]={0,1,2};
+ if (edges[1].LenQ() < edges[0].LenQ()) { order[0]=1; order[1]=0; }
+ if (edges[2].LenQ() < edges[order[1]].LenQ())
+ {
+ order[2]=order[1];
+ order[1]=2;
+
+ if (edges[2].LenQ() < edges[order[0]].LenQ())
+ {
+ order[1]=order[0];
+ order[0]=2;
+ }
+ }
+
+ //point within a triangle will of the form: vv + b*vb + c*vc
+ //vb is the shortest edge, vc is the longest edge
+ //vv is their common vertex
+ //vb,vc are oriented outward from this vertex
+ Vector3F vv,vb,vc;
+ if (order[0]==0 && order[2]==1)
+ {
+ //order[0] "points" at shortest edge
+ vv=v1;
+ vb=edges[0];
+ vc=edges[1];
+ }
+ else
+ if (order[0]==0 && order[2]==2)
+ {
+ vv=v2;
+ vb=-edges[0];
+ vc=edges[2];
+ }
+ else
+ if (order[0]==1 && order[2]==0)
+ {
+ vv=v1;
+ vb=edges[1];
+ vc=edges[0];
+ }
+ else
+ if (order[0]==1 && order[2]==2)
+ {
+ vv=v3;
+ vb=-edges[1];
+ vc=-edges[2];
+ }
+ else
+ if (order[0]==2 && order[2]==0)
+ {
+ vv=v2;
+ vb=edges[2];
+ vc=-edges[0];
+ }
+ else
+ if (order[0]==2 && order[2]==1)
+ {
+ vv=v3;
+ vb=-edges[2];
+ vc=-edges[1];
+ }
+
+ //optimal increment for the short and long edge, respectively
+ float db=(vb.x*xRes > vb.y*yRes)? vb.x*xRes : vb.y*yRes;
+ db=(vb.z*zRes > db)? vb.z*zRes : db;
+ db=1.f/db;
+
+ float dc=(vc.x*xRes > vc.y*yRes)? vc.x*xRes : vc.y*yRes;
+ dc=(vc.z*zRes > dc)? vc.z*zRes : dc;
+ dc=1.f/dc;
+
+ std::cout << "\nID #" << i << ": v1=(" << v1.x << "," << v1.y << "," << v1.z << ")\n";
+ std::cout << "ID #" << i << ": v2=(" << v2.x << "," << v2.y << "," << v2.z << ")\n";
+ std::cout << "ID #" << i << ": v3=(" << v3.x << "," << v3.y << "," << v3.z << ")\n";
+
+ //sweeping (and rendering) the triangle
+ for (float c=0.f; c <= 1.0f; c += dc)
+ for (float b=0.f; b <= (1.0f-c); b += db)
+ {
+ Vector3F v=vv;
+ v+=b*vb;
+ v+=c*vc;
+
+ std::cout << "ID #" << i << ": v=(" << v.x << "," << v.y << "," << v.z << ")\n";
+
+ //nearest neighbor pixel coordinate
+ const int x=(int)roundf( (v.x-xOff) *xRes);
+ const int y=(int)roundf( (v.y-yOff) *yRes);
+ const int z=(int)roundf( (v.z-zOff) *zRes);
+
+ if (mask.Include(x,y,z)) mask.SetVoxel(x,y,z,i);
+ }
+ }
+}
+
+
void ActiveMesh::CenterMesh(const Vector3F& newCentre)
{
//calc geom. centre
diff --git a/cmath3d/TriangleMesh.h b/cmath3d/TriangleMesh.h
index 58eece6..0da81df 100644
--- a/cmath3d/TriangleMesh.h
+++ b/cmath3d/TriangleMesh.h
@@ -2,6 +2,7 @@
#define __TRIANGLEMESH__FOR_MT__
#include <vector>
+#include <i3d/image3d.h>
#include "../src/params.h"
/**
@@ -28,6 +29,8 @@ class ActiveMesh
///returns 0 on success, otherwise non-zero
int ImportSTL(const char* filename);
int ImportVTK(const char* filename);
+ void RenderMask(i3d::Image3d<i3d::GRAY16>& mask);
+ void RenderMaskB(i3d::Image3d<i3d::GRAY16>& mask);
void CenterMesh(const Vector3F& newCentre);
void ScaleMesh(const Vector3F& scale);
diff --git a/src/main.cpp b/src/main.cpp
index 46853cf..94d9981 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,6 +1,4 @@
-#include <list>
-#include <string.h>
-#include <stdlib.h> //for atoi()
+#include <i3d/image3d.h>
#include "params.h"
#include "graphics.h"
@@ -36,6 +34,15 @@ int main(void)
mesh.CenterMesh(params.sceneCentre);
//work with mesh
+ i3d::Image3d<i3d::GRAY16> mask;
+ mask.SetOffset(i3d::Offset(0.0,0.0,0.0));
+ //mask.SetResolution(i3d::Resolution(20.0,20.0,20.0)); //for torus
+ //mask.MakeRoom(300,300,300);
+ mask.SetResolution(i3d::Resolution(2.0,2.0,2.0)); //for sample cell
+ mask.MakeRoom(600,600,600);
+ mask.GetVoxelData()=0;
+ mesh.RenderMask(mask);
+ mask.SaveImage("mesh.ics");
initializeGL();
loopGL();
diff --git a/src/params.h b/src/params.h
index c42c48c..7caf761 100644
--- a/src/params.h
+++ b/src/params.h
@@ -71,6 +71,9 @@ class Vector3d {
return( *this );
}
+ /// unary minus = negate
+ Vector3d<T> operator-() const { return Vector3d<T>(-x,-y,-z); }
+
Vector3d<T>& operator=(const T scalar)
{
this->x=scalar;
--
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