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scriptcraft/src/main/javascript/drone/sphere.js

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2013-01-23 01:02:57 +01:00
load(__folder + "drone.js");
Drone.extend('sphere', function(block,radius)
{
var lastRadius = radius;
var slices = [[radius,0]];
var diameter = radius*2;
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var world = this._getWorld();
var bm = this._getBlockIdAndMeta(block);
var r2 = radius*radius;
for (var i = 0; i <= radius;i++){
var newRadius = Math.round(Math.sqrt(r2 - i*i));
if (newRadius == lastRadius)
slices[slices.length-1][1]++;
else
slices.push([newRadius,1]);
lastRadius = newRadius;
}
this.chkpt('sphere');
//
// mid section
//
this.up(radius - slices[0][1])
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.cylinder(block,radius,(slices[0][1]*2)-1,{blockType: bm[0],meta: bm[1],world: world})
.down(radius-slices[0][1]);
var yOffset = -1;
for (var i = 1; i < slices.length;i++)
{
yOffset += slices[i-1][1];
var sr = slices[i][0];
var sh = slices[i][1];
var v = radius + yOffset, h = radius-sr;
// northern hemisphere
this.up(v).fwd(h).right(h)
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.cylinder(block,sr,sh,{blockType: bm[0],meta: bm[1],world: world})
.left(h).back(h).down(v);
// southern hemisphere
v = radius - (yOffset+sh+1);
this.up(v).fwd(h).right(h)
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.cylinder(block,sr,sh,{blockType: bm[0],meta: bm[1],world: world})
.left(h).back(h). down(v);
}
return this.move('sphere');
});
//
// sphere0 creates an empty sphere but the code needs work
// - there are gaps in the sphere due to rasterization.
//
Drone.extend('sphere0', function(block,radius)
{
/*
this.sphere(block,radius)
.fwd().right().up()
.sphere(0,radius-1)
.back().left().down();
*/
var lastRadius = radius;
var slices = [[radius,0]];
var diameter = radius*2;
var world = this._getWorld();
var bm = this._getBlockIdAndMeta(block);
var r2 = radius*radius;
for (var i = 0; i <= radius;i++){
var newRadius = Math.round(Math.sqrt(r2 - i*i));
if (newRadius == lastRadius)
slices[slices.length-1][1]++;
else
slices.push([newRadius,1]);
lastRadius = newRadius;
}
this.chkpt('sphere0');
//
// mid section
//
//.cylinder(block,radius,(slices[0][1]*2)-1,{blockType: bm[0],meta: bm[1],world: world})
this.up(radius - slices[0][1])
.arc({blockType: bm[0],
meta: bm[1],
radius: radius,
strokeWidth: 2,
stack: (slices[0][1]*2)-1,
world: world,
fill: false
})
.down(radius-slices[0][1]);
var yOffset = -1;
var len = slices.length;
for (var i = 1; i < len;i++)
{
yOffset += slices[i-1][1];
var sr = slices[i][0];
var sh = slices[i][1];
var v = radius + yOffset, h = radius-sr;
// northern hemisphere
// .cylinder(block,sr,sh,{blockType: bm[0],meta: bm[1],world: world})
this.up(v).fwd(h).right(h)
.arc({
blockType: bm[0],
meta: bm[1],
world: world,
radius: sr,
stack: sh,
fill: false,
strokeWidth: i<len-1?1+(sr-slices[i+1][0]):1
})
.left(h).back(h).down(v);
// southern hemisphere
v = radius - (yOffset+sh+1);
//.cylinder(block,sr,sh,{blockType: bm[0],meta: bm[1],world: world})
this.up(v).fwd(h).right(h)
.arc({
blockType: bm[0],
meta: bm[1],
world: world,
radius: sr,
stack: sh,
fill: false,
strokeWidth: i<len-1?1+(sr-slices[i+1][0]):1
})
.left(h).back(h). down(v);
}
this.move('sphere0');
return this;
});
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Drone.extend('hemisphere', function(block,radius, northSouth){
var lastRadius = radius;
var slices = [[radius,0]];
var diameter = radius*2;
var world = this._getWorld();
var bm = this._getBlockIdAndMeta(block);
var r2 = radius*radius;
for (var i = 0; i <= radius;i++){
var newRadius = Math.round(Math.sqrt(r2 - i*i));
if (newRadius == lastRadius)
slices[slices.length-1][1]++;
else
slices.push([newRadius,1]);
lastRadius = newRadius;
}
this.chkpt('hsphere');
//
// mid section
//
if (northSouth == "north"){
this.cylinder(block,radius,slices[0][1],{blockType: bm[0],meta: bm[1],world: world});
} else {
this.up(radius - slices[0][1])
.cylinder(block,radius,slices[0][1],{blockType: bm[0],meta: bm[1],world: world})
.down(radius - slices[0][1]);
}
var yOffset = -1;
for (var i = 1; i < slices.length;i++)
{
yOffset += slices[i-1][1];
var sr = slices[i][0];
var sh = slices[i][1];
var v = yOffset, h = radius-sr;
if (northSouth == "north") {
// northern hemisphere
this.up(v).fwd(h).right(h)
.cylinder(block,sr,sh,{blockType: bm[0],meta: bm[1],world: world})
.left(h).back(h).down(v);
}else{
// southern hemisphere
v = radius - (yOffset+sh+1);
this.up(v).fwd(h).right(h)
.cylinder(block,sr,sh,{blockType: bm[0],meta: bm[1],world: world})
.left(h).back(h). down(v);
}
}
return this.move('hsphere');
});
Drone.extend('hemisphere0', function(block,radius,northSouth){
return this.hemisphere(block,radius,northSouth)
.fwd().right().up(northSouth=="north"?0:1)
.hemisphere(0,radius-1,northSouth)
.back().left().down(northSouth=="north"?0:1);
});