/*******************************************************************************
* Copyright (c) 2013, Daniel Murphy
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
******************************************************************************/
/**
* Created at 4:11:55 AM Jan 15, 2011
*/
package org.jbox2d.testbed.tests;
import org.jbox2d.collision.shapes.CircleShape;
import org.jbox2d.collision.shapes.EdgeShape;
import org.jbox2d.collision.shapes.PolygonShape;
import org.jbox2d.common.Vec2;
import org.jbox2d.dynamics.Body;
import org.jbox2d.dynamics.BodyDef;
import org.jbox2d.dynamics.BodyType;
import org.jbox2d.dynamics.FixtureDef;
import org.jbox2d.dynamics.joints.WeldJointDef;
import org.jbox2d.testbed.framework.TestbedTest;
/**
* @author Daniel Murphy
*/
public class Cantilever extends TestbedTest {
int e_count = 8;
@Override
public boolean isSaveLoadEnabled() {
return true;
}
@Override
public void initTest(boolean argDeserialized) {
if (argDeserialized) {
return;
}
Body ground = null;
{
BodyDef bd = new BodyDef();
ground = getWorld().createBody(bd);
EdgeShape shape = new EdgeShape();
shape.set(new Vec2(-40.0f, 0.0f), new Vec2(40.0f, 0.0f));
ground.createFixture(shape, 0.0f);
}
{
PolygonShape shape = new PolygonShape();
shape.setAsBox(0.5f, 0.125f);
FixtureDef fd = new FixtureDef();
fd.shape = shape;
fd.density = 20.0f;
WeldJointDef jd = new WeldJointDef();
Body prevBody = ground;
for (int i = 0; i < e_count; ++i) {
BodyDef bd = new BodyDef();
bd.type = BodyType.DYNAMIC;
bd.position.set(-14.5f + 1.0f * i, 5.0f);
Body body = getWorld().createBody(bd);
body.createFixture(fd);
Vec2 anchor = new Vec2(-15.0f + 1.0f * i, 5.0f);
jd.initialize(prevBody, body, anchor);
getWorld().createJoint(jd);
prevBody = body;
}
}
{
PolygonShape shape = new PolygonShape();
shape.setAsBox(1f, 0.125f);
FixtureDef fd = new FixtureDef();
fd.shape = shape;
fd.density = 20.0f;
WeldJointDef jd = new WeldJointDef();
jd.frequencyHz = 5f;
jd.dampingRatio = .7f;
Body prevBody = ground;
for (int i = 0; i < 3; ++i) {
BodyDef bd = new BodyDef();
bd.type = BodyType.DYNAMIC;
bd.position.set(-14.0f + 2.0f * i, 15.0f);
Body body = getWorld().createBody(bd);
body.createFixture(fd);
Vec2 anchor = new Vec2(-15.0f + 2.0f * i, 15.0f);
jd.initialize(prevBody, body, anchor);
getWorld().createJoint(jd);
prevBody = body;
}
}
{
PolygonShape shape = new PolygonShape();
shape.setAsBox(0.5f, 0.125f);
FixtureDef fd = new FixtureDef();
fd.shape = shape;
fd.density = 20.0f;
WeldJointDef jd = new WeldJointDef();
Body prevBody = ground;
for (int i = 0; i < e_count; ++i) {
BodyDef bd = new BodyDef();
bd.type = BodyType.DYNAMIC;
bd.position.set(-4.5f + 1.0f * i, 5.0f);
Body body = getWorld().createBody(bd);
body.createFixture(fd);
if (i > 0) {
Vec2 anchor = new Vec2(-5.0f + 1.0f * i, 5.0f);
jd.initialize(prevBody, body, anchor);
getWorld().createJoint(jd);
}
prevBody = body;
}
}
{
PolygonShape shape = new PolygonShape();
shape.setAsBox(0.5f, 0.125f);
FixtureDef fd = new FixtureDef();
fd.shape = shape;
fd.density = 20.0f;
WeldJointDef jd = new WeldJointDef();
jd.frequencyHz = 8f;
jd.dampingRatio = .7f;
Body prevBody = ground;
for (int i = 0; i < e_count; ++i) {
BodyDef bd = new BodyDef();
bd.type = BodyType.DYNAMIC;
bd.position.set(5.5f + 1.0f * i, 10.0f);
Body body = getWorld().createBody(bd);
body.createFixture(fd);
if (i > 0) {
Vec2 anchor = new Vec2(5.0f + 1.0f * i, 10.0f);
jd.initialize(prevBody, body, anchor);
getWorld().createJoint(jd);
}
prevBody = body;
}
}
for (int i = 0; i < 2; ++i) {
Vec2 vertices[] = new Vec2[3];
vertices[0] = new Vec2(-0.5f, 0.0f);
vertices[1] = new Vec2(0.5f, 0.0f);
vertices[2] = new Vec2(0.0f, 1.5f);
PolygonShape shape = new PolygonShape();
shape.set(vertices, 3);
FixtureDef fd = new FixtureDef();
fd.shape = shape;
fd.density = 1.0f;
BodyDef bd = new BodyDef();
bd.type = BodyType.DYNAMIC;
bd.position.set(-8.0f + 8.0f * i, 12.0f);
Body body = getWorld().createBody(bd);
body.createFixture(fd);
}
for (int i = 0; i < 2; ++i) {
CircleShape shape = new CircleShape();
shape.m_radius = 0.5f;
FixtureDef fd = new FixtureDef();
fd.shape = shape;
fd.density = 1.0f;
BodyDef bd = new BodyDef();
bd.type = BodyType.DYNAMIC;
bd.position.set(-6.0f + 6.0f * i, 10.0f);
Body body = getWorld().createBody(bd);
body.createFixture(fd);
}
}
@Override
public String getTestName() {
return "Cantilever";
}
}