コード例 #1
0
ファイル: World.java プロジェクト: robinp/libgdx
  private void drawShape(Fixture fixture, Transform xf, Color3f color) {
    switch (fixture.getType()) {
      case CIRCLE:
        {
          CircleShape circle = (CircleShape) fixture.getShape();

          // Vec2 center = Mul(xf, circle.m_p);
          Transform.mulToOutUnsafe(xf, circle.m_p, center);
          float radius = circle.m_radius;
          xf.q.getXAxis(axis);

          if (fixture.getUserData() != null && fixture.getUserData().equals(LIQUID_INT)) {
            Body b = fixture.getBody();
            liquidOffset.set(b.m_linearVelocity);
            float linVelLength = b.m_linearVelocity.length();
            if (averageLinearVel == -1) {
              averageLinearVel = linVelLength;
            } else {
              averageLinearVel = .98f * averageLinearVel + .02f * linVelLength;
            }
            liquidOffset.mulLocal(liquidLength / averageLinearVel / 2);
            circCenterMoved.set(center).addLocal(liquidOffset);
            center.subLocal(liquidOffset);
            m_debugDraw.drawSegment(center, circCenterMoved, liquidColor);
            return;
          }

          m_debugDraw.drawSolidCircle(center, radius, axis, color);
        }
        break;

      case POLYGON:
        {
          PolygonShape poly = (PolygonShape) fixture.getShape();
          int vertexCount = poly.m_count;
          assert (vertexCount <= Settings.maxPolygonVertices);
          Vec2[] vertices = tlvertices.get(Settings.maxPolygonVertices);

          for (int i = 0; i < vertexCount; ++i) {
            // vertices[i] = Mul(xf, poly.m_vertices[i]);
            Transform.mulToOutUnsafe(xf, poly.m_vertices[i], vertices[i]);
          }

          m_debugDraw.drawSolidPolygon(vertices, vertexCount, color);
        }
        break;
      case EDGE:
        {
          EdgeShape edge = (EdgeShape) fixture.getShape();
          Transform.mulToOutUnsafe(xf, edge.m_vertex1, v1);
          Transform.mulToOutUnsafe(xf, edge.m_vertex2, v2);
          m_debugDraw.drawSegment(v1, v2, color);
        }
        break;

      case CHAIN:
        {
          ChainShape chain = (ChainShape) fixture.getShape();
          int count = chain.m_count;
          Vec2[] vertices = chain.m_vertices;

          Transform.mulToOutUnsafe(xf, vertices[0], v1);
          for (int i = 1; i < count; ++i) {
            Transform.mulToOutUnsafe(xf, vertices[i], v2);
            m_debugDraw.drawSegment(v1, v2, color);
            m_debugDraw.drawCircle(v1, 0.05f, color);
            v1.set(v2);
          }
        }
        break;
      default:
        break;
    }
  }