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Topic: precise rotation possible? (Read 244 times) |
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christian
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precise rotation possible?
« on: Aug 31st, 2004, 12:26pm » |
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i did not manage to get a precise rotation
of cubes running this code below:
<B>code</B>
bloqueElement b;
boolean isRotatable=false;
boolean turn45=false;
void setup(){
size(800,600);
background(44);
b=new bloqueElement(new Point3D(width/2, height/2, 0));
//rectMode(CENTER_DIAMETER);
}
void loop(){
clear();
b.draw();
}
class Point3D{
float x,y,z;
Point3D(float _x, float _y, float _z){
x=_x; y=_y; z=_z;
}
Point3D(Point3D p){
x=p.x; y=p.y; z=p.z;
}
}
class bloqueElement{
Point3D bePos;
float x,y,z;
float rotX=0;
float rotY=0;
float tempRotX, tempRotY;
bloqueElement(Point3D _bePos){
bePos=_bePos;
}
void rotation(){
if(isRotatable){
rotX+=((mouseY)*.018-rotX)*0.09;
rotY+=((mouseX)*.018-rotY)*0.09;
};
if(rotX<=this.tempRotX){
rotX+=(PI/2)*.1;
//rotY=2;
}
if(rotX>this.tempRotX){
rotX-=(PI/2)*.1;
//rotY=2;
}
}
void draw(){
rotation();
fill(255,255,255,80);
stroke(200,200,200,120);
push();
translate(width/2, height/2, 0);
rotateX(rotX);
rotateY(rotY);
beginShape(QUADS);
//vorn
vertex(-50,50,50);
vertex(50,50,50);
vertex(50,-50,50);
vertex(-50,-50,50);
//hinten
vertex(-50,50,-50);
vertex(50,50,-50);
vertex(50,-50,-50);
vertex(-50,-50,-50);
//rechts
vertex(50,-50,50);
vertex(50,-50,-50);
vertex(50,50,-50);
vertex(50,50,50);
//links
vertex(-50,-50,50);
vertex(-50,-50,-50);
vertex(-50,50,-50);
vertex(-50,50,50);
//oben
fill(200,0,0);
vertex(50,-50,50);
vertex(50,-50,-50);
vertex(-50,-50,-50);
vertex(-50,-50,50);
fill(200,200,200);
//unten
vertex(50,50,50);
vertex(50,50,-50);
vertex(-50,50,-50);
vertex(-50,50,50);
endShape();
pop();
}
}
void keyPressed(){
switch(key){
case 'r': isRotatable=!isRotatable;break;
case 't': b.tempRotX=b.rotX+PI/2;break;
case 'f': b.tempRotX=b.rotX-PI/2;break;
}
}
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| « Last Edit: Aug 31st, 2004, 4:33pm by christian » |
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gll
 
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Re: precise rotation possible?
« Reply #1 on: Aug 31st, 2004, 8:38pm » |
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Code: void rotation(){
if(isRotatable){
rotX+=((mouseY)*.018f-rotX)*0.09f;
rotY+=((mouseX)*.018f-rotY)*0.09f;
};
if(rotX<=this.tempRotX){
rotX+=((PI/2f)*.1f);
//rotY=2;
}
if(rotX>this.tempRotX){
rotX-=((PI/2f)*.1f);
//rotY=2;
}
println("("+rotX+" | "+rotY+")");
}
Would give in the corner
([rotX] - [rotY])
(-0.069032505 | 2.9227154)
(-0.040139586 | 2.923731)
(-0.013847023 | 2.9246552)
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It seems to be when rotX is negative, try to remove the tests after;
Code: void rotation(){
if(isRotatable){
rotX+=((mouseY)*.018f-rotX)*0.09f;
rotY+=((mouseX)*.018f-rotY)*0.09f;
};
println("("+rotX+" | "+rotY+")");
}
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guillaume LaBelle
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