vrmlobject.cpp

marchingcube源代码

#include "VRMLobject.h"
#include "math.h"

//class VRMLobject:
void VRMLobject_relese(VRMLobject *This)
{
	//relese the linked lists:
	Point3D *tmpP1 = This->PointListHead;
	Point3D *tmpP2;
	Triangle *tmpT1 = This->TriangleListHead;
	Triangle *tmpT2;
	while (tmpP1)
	{
		tmpP2 = tmpP1;
		tmpP1 = tmpP1->next;
		free(tmpP2);
	}
	while (tmpT1)
	{
		tmpT2 = tmpT1;
		tmpT1 = tmpT1->next;
		free(tmpT2);
	}
}

void VRMLobject_WriteTo(VRMLobject *This, FILE *outfile)
{
	This->PointListHead = 0;
	This->PointListTail = 0;
	This->TriangleListHead = 0;
	This->TriangleListTail = 0;
	This->MyOutFile = outfile;
	This->NbPoints = 0;
	This->NbTri = 0;
	This->N = 0;
}

void VRMLobject_AddPoint(VRMLobject *This, Point3D *APoint3D)
{
	//printf("adding a point to the object...\n");
	if (This->PointListHead==0)
	{
		This->PointListHead = new_Point3D(APoint3D);
		This->PointListTail = This->PointListHead;
	}
	else
	{
		This->PointListTail->next = new_Point3D(APoint3D);
		This->PointListTail = This->PointListTail->next;
	}
	This->NbPoints++;
	This->PointListTail->next = 0;
}

void VRMLobject_AddTriangle(VRMLobject *This, Triangle *ATriangle)
{
	printf("adding a triangle to the object...\n");
	if (This->TriangleListHead==0)
	{
		This->TriangleListHead = new_Triangle(ATriangle);
		This->TriangleListTail = This->TriangleListHead;
	}
	else
	{
		This->TriangleListTail->next = new_Triangle(ATriangle);
		This->TriangleListTail = This->TriangleListTail->next;
	}
	This->NbTri++;
	This->TriangleListTail->next = 0;
}

void VRMLobject_AddTriangleList(VRMLobject *This, TriangleList *ATriangleList)
{
	printf("adding a triangle list to the object...\n");
	This->TriangleListHead = ATriangleList->Head;
	This->TriangleListTail = ATriangleList->Tail;
	ATriangleList->Head = 0;
	ATriangleList->Tail = 0;
	This->NbTri = VRMLobject_CountNbTri(This);
}

int VRMLobject_CountNbTri(VRMLobject *This)
{
	int Nb = 0;
	Triangle *tmp = This->TriangleListHead;
	while (tmp)
	{
		Nb++;
		tmp = tmp->next;
	}
	return Nb;
}

void VRMLobject_SaveToFileAsVRML1(VRMLobject *This)
{
	const char *String1 =
	"#VRML V1.0 ascii\n"
	"Separator {	#Produced by the marchin cubes algorithm\n"
	"				#Implemented by Marcus Hewat, all rights reserved\n"
	"Info {string \"Generated by Marcus Hewat's marching cubes implementation\"}\n"
	"DEF front PerspectiveCamera {\n"
	"position         0.5  0.5 2.5\n"
	"orientation      0 0 1  0\n"
	"focalDistance    5\n"
	"heightAngle      0.785398}\n"
	"DEF top PerspectiveCamera {\n"
	"position         0.5  2 0.5\n"
	"orientation      1 0 0  -1.57\n"
	"focalDistance    5\n"
	"heightAngle      0.785398}\n"
	"DEF under PerspectiveCamera {\n"
	"position         0.5  -1.5 0.5\n"
	"orientation      1 0 0  1.57\n"
	"focalDistance    5\n"
	"heightAngle      0.785398}\n"
	"DEF left PerspectiveCamera {\n"
	"position         2 0.5 0.5\n"
	"orientation      0 1 0  1.57\n"
	"focalDistance    5\n"
	"heightAngle      0.785398}\n"
	"DEF right PerspectiveCamera {\n"
	"position         -1 0.5 0.5\n"
	"orientation      0 1 0  -1.57\n"
	"focalDistance    5\n"
	"heightAngle      0.785398}\n"
			"	Material {diffuseColor 0 0.8 0.2}\n"
			"		NormalBinding {value PER_VERTEX}\n"
			"		Coordinate3 {\n"
			"			point [\n";
	const char *String2 = "]\n"
			"	}\n"
			"	IndexedFaceSet {\n"
			"		#clockwise from the outside:\n"
			"		coordIndex [	\n";
	const char *String3 = "\n"
			"		]\n"
			"	}\n"
			"}\n";
	Point3D *tmp1 = This->PointListHead;
	Triangle *tmp2 = This->TriangleListHead;

	fprintf(This->MyOutFile,String1);
	while (tmp1!=0)
	{
		fprintf(This->MyOutFile,"%f %f %f,\n",tmp1->x,tmp1->y,tmp1->z);
		tmp1 = tmp1->next;
	}
	fprintf(This->MyOutFile,String2);
	while (tmp2!=0)
	{
		fprintf(This->MyOutFile,"%i, %i, %i, -1,\n",tmp2->b,tmp2->a,tmp2->c);
		tmp2 = tmp2->next;
	}
	fprintf(This->MyOutFile,String3);
}

void VRMLobject_SaveToFileAsOff(VRMLobject *This)
{
	Point3D *tmp1 = This->PointListHead;
	Triangle *tmp2 = This->TriangleListHead;

	printf("writing off file...\n");
	printf("%i %i %i\n",This->NbPoints,This->NbTri,This->N);

	fprintf(This->MyOutFile,"%i %i %i\n",This->NbPoints,This->NbTri,This->N);
	while (tmp1!=0)
	{
		Point3D_write(tmp1, This->MyOutFile);
		tmp1 = tmp1->next;
	}
	while (tmp2!=0)
	{
		Triangle_write(tmp2, This->MyOutFile);
		tmp2 = tmp2->next;
	}
}