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added composite meshing and soft body factory

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liabru 2014-03-30 19:43:48 +01:00
parent b24408635a
commit 283281aeb7
1 changed files with 77 additions and 0 deletions
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77
src/factory/Composites.js
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@ -95,6 +95,55 @@ var Composites = {};
return composite;
};
/**
* Connects bodies in the composite with constraints in a grid pattern, with optional cross braces
* @method mesh
* @param {composite} composite
* @param {number} columns
* @param {number} rows
* @param {boolean} crossBrace
* @param {object} options
* @return {composite} The composite containing objects meshed together with constraints
*/
Composites.mesh = function(composite, columns, rows, crossBrace, options) {
var bodies = composite.bodies,
row,
col,
bodyA,
bodyB,
bodyC;
for (row = 0; row < rows; row++) {
for (col = 0; col < columns; col++) {
if (col > 0) {
bodyA = bodies[(col - 1) + (row * columns)];
bodyB = bodies[col + (row * columns)];
Composite.addConstraint(composite, Constraint.create(Common.extend({ bodyA: bodyA, bodyB: bodyB }, options)));
}
}
for (col = 0; col < columns; col++) {
if (row > 0) {
bodyA = bodies[col + ((row - 1) * columns)];
bodyB = bodies[col + (row * columns)];
Composite.addConstraint(composite, Constraint.create(Common.extend({ bodyA: bodyA, bodyB: bodyB }, options)));
if (crossBrace && col > 0) {
bodyC = bodies[(col - 1) + ((row - 1) * columns)];
Composite.addConstraint(composite, Constraint.create(Common.extend({ bodyA: bodyC, bodyB: bodyB }, options)));
}
if (crossBrace && col < columns - 1) {
bodyC = bodies[(col + 1) + ((row - 1) * columns)];
Composite.addConstraint(composite, Constraint.create(Common.extend({ bodyA: bodyC, bodyB: bodyB }, options)));
}
}
}
}
return composite;
};
/**
* Description
@ -219,4 +268,32 @@ var Composites = {};
return car;
};
/**
* Creates a simple soft body like object
* @method softBody
* @param {number} xx
* @param {number} yy
* @param {number} columns
* @param {number} rows
* @param {number} columnGap
* @param {number} rowGap
* @param {boolean} crossBrace
* @param {number} particleRadius
* @param {} particleOptions
* @param {} constraintOptions
* @return {composite} A new composite softBody
*/
Composites.softBody = function(xx, yy, columns, rows, columnGap, rowGap, crossBrace, particleRadius, particleOptions, constraintOptions) {
particleOptions = Common.extend({ inertia: Infinity }, particleOptions);
constraintOptions = Common.extend({ stiffness: 0.4 }, constraintOptions);
var softBody = Composites.stack(xx, yy, columns, rows, columnGap, rowGap, function(x, y, column, row) {
return Bodies.circle(x, y, particleRadius, particleOptions);
});
Composites.mesh(softBody, columns, rows, crossBrace, constraintOptions);
return softBody;
};
})();