VRML
canon
ドーナツ
<![CDATA[
#include<stdio.h>
#include<math.h>
main()
{
FILE *infp,*outfp;
int i,j,n1,n2;
float th1,th2;
float PI=3.141592;
float r,r1,r2,x1,y1,z1,x2,y2,z2;
outfp=fopen("tamen.wrl","w");
n1=16;
n2=16;
r1=1.0;
r2=5.0;
printf("ドーナツを作るプログラムです。\n");
printf("太さは？");
scanf("%f",&r1);
printf("直径は？");
scanf("%f",&r2);
vrmlfaceset1(outfp);
// Coordinateのpointを生成開始
for(j=0;j<n2;j++)
{
th2=2*PI*j/n2;
r=r1*cos(th2)+r2;
y1=r1*sin(th2);
for(i=0;i<n1;i++)
{
th1=2*PI*i/n1;
x1=r*cos(th1);
z1=r*sin(th1);
fprintf(outfp," %7.3f %7.3f %7.3f,\n",x1,y1,z1);
}
}
//
vrmlfaceset2(outfp);
// CoordinateのcodeIndexを生成
for(j=0;j<n2;j++)
{
for(i=0;i<n1;i++)
{
fprintf(outfp," %d %d %d %d -1,\n",i+n1*j,i+n1*((j+1)%n2),(i+1)%n1+n1*((j+1)%n2),(i+1)%n1+n1*j);
}
}
vrmlfaceset3(outfp);
fclose(outfp);
}
//
// vrmlfaceset functions
//
vrmlfaceset1(FILE *outfp)
{
fprintf(outfp,"#VRML V2.0 utf8
Background{
skyColor 0.9 0.9 1
}
Transform{
translation 0 0 -10
children[
Shape{
appearance Appearance{
material Material{diffuseColor 1 0.6 0}
}
geometry IndexedFaceSet{
coord Coordinate{
point[
");
}
vrmlfaceset2(FILE *outfp)
{
fprintf(outfp," ]
}
coordIndex[
");
}
vrmlfaceset3(FILE *outfp)
{
fprintf(outfp," ]
solid TRUE
}
}
]
}
");
}
]]>
上のドーナツにギザギザをつけてタイヤみたいにしたもの
<![CDATA[
#include<stdio.h>
#include<math.h>
main()
{
FILE *infp,*outfp;
int i,j,n1,n2;
float th1,th2;
float PI=3.141592;
float r,r1,r2,x1,y1,z1,x2,y2,z2;
outfp=fopen("tamen.wrl","w");
n1=500;
n2=100;
r1=1.0;
r2=5.0;
/*
printf("ドーナツを作るプログラムです。\n");
printf("太さは？");
scanf("%f",&r1);
printf("直径は？");
scanf("%f",&r2);
*/
vrmlfaceset1(outfp);
// Coordinateのpointを生成開始
for(j=0;j<n2;j++)
{
th2=2*PI*j/n2;
r=r1*cos(th2)+r2*(1+0.01*sin(20*th2));
y1=r1*sin(th2);
for(i=0;i<n1;i++)
{
th1=2*PI*i/n1;
x1=r*cos(th1)*(1+0.01*sin(th1*n1/4+PI/4));
z1=r*sin(th1)*(1+0.01*sin(th1*n1/4+PI/4));
fprintf(outfp," %7.3f %7.3f %7.3f,\n",x1,y1,z1);
}
}
//
vrmlfaceset2(outfp);
// CoordinateのcodeIndexを生成
for(j=0;j<n2;j++)
{
for(i=0;i<n1;i++)
{
fprintf(outfp," %d %d %d %d -1,\n",i+n1*j,i+n1*((j+1)%n2),(i+1)%n1+n1*((j+1)%n2),(i+1)%n1+n1*j);
}
}
vrmlfaceset3(outfp);
fclose(outfp);
}
//
// vrmlfaceset functions
//
vrmlfaceset1(FILE *outfp)
{
fprintf(outfp,"#VRML V2.0 utf8
Background{
skyColor 0.9 0.9 1
}
Transform{
translation 0 0 -10
children[
Shape{
appearance Appearance{
material Material{diffuseColor 1 0.6 0}
}
geometry IndexedFaceSet{
coord Coordinate{
point[
");
}
vrmlfaceset2(FILE *outfp)
{
fprintf(outfp," ]
}
coordIndex[
");
}
vrmlfaceset3(FILE *outfp)
{
fprintf(outfp," ]
solid TRUE
}
}
]
}
");
}
]]>
自由に動かせる関節
<![CDATA[
#VRML V2.0 utf8
Background{
skyColor[1 1 1]
}
DEF Hako2 Transform{
translation 0 0 0
rotation 0 0 1 0
children[
DEF Sensor2 SphereSensor{},
Transform{
translation 0 -1 0
children[
Shape{
geometry Box{size 1 2 1}
appearance Appearance{material Material{diffuseColor 1 1 0}}
}
DEF Hako Transform{
translation 0 -1 0
rotation 0 0 1 0
children[
DEF Sensor SphereSensor{},
Transform{
translation 0 -1 0
children[
Shape{
geometry Box{size 1 2 1}
appearance Appearance{material Material{diffuseColor 0 1 1}}
}
]
}
]
}
]
}
]
}
ROUTE Sensor.rotation_changed TO Hako.set_rotation
ROUTE Sensor2.rotation_changed TO Hako2.set_rotation
]]>
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