public override void Build()
{
AddGround();
RigidBody body1 = new RigidBody(new BoxShape(1, 1, 1));
RigidBody body2 = new RigidBody(new BoxShape(1, 1, 1));
body1.Position = new JVector(0, 7, 0);
body2.Position = new JVector(0, 4, 0);
// add a prismatic joint.
// the minimum allowed distance is 3
// the maximum allowed distance is also 3
// => the body should be fixed on the slider
PrismaticJoint pj = new PrismaticJoint(Demo.World, body1, body2, 3, 3);
// but we set very heigh softness (1.0f) to the minimum distance
// so we have something like a suspension effect.
pj.MaximumDistanceConstraint.Softness = 0.0f;
pj.MinimumDistanceConstraint.Softness = 1.0f;
pj.Activate();
Demo.World.AddBody(body1);
Demo.World.AddBody(body2);
}
protected override void Init()
{
base.Init();
var cubeTexture = new Texture("BoxDiffuse.jpg");
cubes = new Cube[PyramidHeight, PyramidHeight];
for (int z=0; z<PyramidHeight; z++)
for (int x=0; x<PyramidHeight; x++)
cubes[x, z] = new Cube(cubeTexture, new Vector3D(
1.1f*(x-(PyramidHeight)/2.0f), 0, 1.1f*z+2.55f));
for (int z = 0; z < PyramidHeight; z++)
for (int x = 0; x < PyramidHeight - 1; x++)
{
var horizontalJoint = new PrismaticJoint(Entities.world3D,
cubes[x, z].body, cubes[x+1, z].body, 1.1f, 1.1f);
horizontalJoint.FixedAngleConstraint.Softness = 1;
horizontalJoint.Activate();
if (z < PyramidHeight - 1)
{
var verticalJoint = new PrismaticJoint(Entities.world3D, cubes[x, z].body,
cubes[x, z + 1].body, 1.1f, 1.1f);
verticalJoint.FixedAngleConstraint.Softness = 1;
verticalJoint.Activate();
}
}
}
private void CreatePrismaticJoint(JitterPhysics physicsManager)
{
Joint = new PrismaticJoint(physicsManager.jitterWorld, RigidBodyA, RigidBodyB,
ArrayExtensions.GetWithDefault<PropertyType, float>(Properties,
PropertyType.MinimumDistance),
ArrayExtensions.GetWithDefault<PropertyType, float>(Properties,
PropertyType.MaximumDistance));
float minimumSoftness = ArrayExtensions.GetWithDefault<PropertyType, float>(Properties,
PropertyType.MinimumSoftness);
float maximumSoftness = ArrayExtensions.GetWithDefault<PropertyType, float>(Properties,
PropertyType.MaximumSoftness);
(Joint as PrismaticJoint).MaximumDistanceConstraint.Softness = maximumSoftness;
(Joint as PrismaticJoint).MinimumDistanceConstraint.Softness = minimumSoftness;
}
