Examples with Vec2 org.jbox2d.common.Vec2 used on opensource projects

Example 26 with Vec2

use of org.jbox2d.common.Vec2 in project libgdx by libgdx.

the class ChainShape method raycast.

@Override
public boolean raycast(RayCastOutput output, RayCastInput input, Transform xf, int childIndex) {
    assert (childIndex < m_count);
    final EdgeShape edgeShape = pool0;
    int i1 = childIndex;
    int i2 = childIndex + 1;
    if (i2 == m_count) {
        i2 = 0;
    }
    Vec2 v = m_vertices[i1];
    edgeShape.m_vertex1.x = v.x;
    edgeShape.m_vertex1.y = v.y;
    Vec2 v1 = m_vertices[i2];
    edgeShape.m_vertex2.x = v1.x;
    edgeShape.m_vertex2.y = v1.y;
    return edgeShape.raycast(output, input, xf, 0);
}

Example 27 with Vec2

use of org.jbox2d.common.Vec2 in project libgdx by libgdx.

the class ChainShape method createLoop.

/**
   * Create a loop. This automatically adjusts connectivity.
   * 
   * @param vertices an array of vertices, these are copied
   * @param count the vertex count
   */
public void createLoop(final Vec2[] vertices, int count) {
    assert (m_vertices == null && m_count == 0);
    assert (count >= 3);
    m_count = count + 1;
    m_vertices = new Vec2[m_count];
    for (int i = 1; i < count; i++) {
        Vec2 v1 = vertices[i - 1];
        Vec2 v2 = vertices[i];
        // If the code crashes here, it means your vertices are too close together.
        if (MathUtils.distanceSquared(v1, v2) < Settings.linearSlop * Settings.linearSlop) {
            throw new RuntimeException("Vertices of chain shape are too close together");
        }
    }
    for (int i = 0; i < count; i++) {
        m_vertices[i] = new Vec2(vertices[i]);
    }
    m_vertices[count] = new Vec2(m_vertices[0]);
    m_prevVertex.set(m_vertices[m_count - 2]);
    m_nextVertex.set(m_vertices[1]);
    m_hasPrevVertex = true;
    m_hasNextVertex = true;
}

Example 28 with Vec2

use of org.jbox2d.common.Vec2 in project libgdx by libgdx.

the class ChainShape method getChildEdge.

/**
   * Get a child edge.
   */
public void getChildEdge(EdgeShape edge, int index) {
    assert (0 <= index && index < m_count - 1);
    edge.m_radius = m_radius;
    final Vec2 v0 = m_vertices[index + 0];
    final Vec2 v1 = m_vertices[index + 1];
    edge.m_vertex1.x = v0.x;
    edge.m_vertex1.y = v0.y;
    edge.m_vertex2.x = v1.x;
    edge.m_vertex2.y = v1.y;
    if (index > 0) {
        Vec2 v = m_vertices[index - 1];
        edge.m_vertex0.x = v.x;
        edge.m_vertex0.y = v.y;
        edge.m_hasVertex0 = true;
    } else {
        edge.m_vertex0.x = m_prevVertex.x;
        edge.m_vertex0.y = m_prevVertex.y;
        edge.m_hasVertex0 = m_hasPrevVertex;
    }
    if (index < m_count - 2) {
        Vec2 v = m_vertices[index + 2];
        edge.m_vertex3.x = v.x;
        edge.m_vertex3.y = v.y;
        edge.m_hasVertex3 = true;
    } else {
        edge.m_vertex3.x = m_nextVertex.x;
        edge.m_vertex3.y = m_nextVertex.y;
        edge.m_hasVertex3 = m_hasNextVertex;
    }
}

Example 29 with Vec2

use of org.jbox2d.common.Vec2 in project libgdx by libgdx.

the class CircleShape method computeAABB.

@Override
public final void computeAABB(final AABB aabb, final Transform transform, int childIndex) {
    final Rot tq = transform.q;
    final Vec2 tp = transform.p;
    final float px = tq.c * m_p.x - tq.s * m_p.y + tp.x;
    final float py = tq.s * m_p.x + tq.c * m_p.y + tp.y;
    aabb.lowerBound.x = px - m_radius;
    aabb.lowerBound.y = py - m_radius;
    aabb.upperBound.x = px + m_radius;
    aabb.upperBound.y = py + m_radius;
}

Example 30 with Vec2

use of org.jbox2d.common.Vec2 in project libgdx by libgdx.

the class WheelJoint method getLocalAxisA.

public Vector2 getLocalAxisA() {
    Vec2 localAxis = joint.getLocalAxisA();
    localAxisA.set(localAxis.x, localAxis.y);
    return localAxisA;
}