panda3d根据2个不规则的6面立体图形的8个顶点最精确计算出这两个不规则的6面立体图形有没有重叠部分完整代码

以下是使用Panda3D计算两个不规则六面体是否存在重叠部分的完整代码示例：

from panda3d.core import Point3, GeomVertexFormat, GeomVertexData, Geom, GeomNode, GeomTriangles, GeomVertexWriter
from panda3d.core import CollisionTraverser, CollisionNode, CollisionHandlerQueue, CollisionRay

from direct.showbase.ShowBase import ShowBase
from direct.task import Task


class MyApp(ShowBase):
    def __init__(self):
        ShowBase.__init__(self)

        # 创建两个不规则六面体的顶点数据
        vertex_data_1 = GeomVertexData('vertex_data_1', GeomVertexFormat.get_v3(), Geom.UH_static)
        vertex_data_2 = GeomVertexData('vertex_data_2', GeomVertexFormat.get_v3(), Geom.UH_static)

        vertex_writer_1 = GeomVertexWriter(vertex_data_1, 'vertex')
        vertex_writer_2 = GeomVertexWriter(vertex_data_2, 'vertex')

        # 顶点坐标
        vertices_1 = [
            Point3(-1, -1, -1),
            Point3(1, -1, -1),
            Point3(1, 1, -1),
            Point3(-1, 1, -1),
            Point3(-1, -1, 1),
            Point3(1, -1, 1),
            Point3(1, 1, 1),
            Point3(-1, 1, 1)
        ]

        vertices_2 = [
            Point3(-1, -1, -1),
            Point3(1, -1, -1),
            Point3(1, 1, -1),
            Point3(-1, 1, -1),
            Point3(-1, -1, 1),
            Point3(1, -1, 1),
            Point3(1, 1, 1),
            Point3(-1, 1, 1)
        ]

        # 写入顶点数据
        for vertex in vertices_1:
            vertex_writer_1.addData3f(vertex)

        for vertex in vertices_2:
            vertex_writer_2.addData3f(vertex)

        # 创建两个不规则六面体的几何体
        geom_1 = Geom(vertex_data_1)
        geom_2 = Geom(vertex_data_2)

        # 创建顶点索引
        prim_1 = GeomTriangles(Geom.UH_static)
        prim_2 = GeomTriangles(Geom.UH_static)

        # 顶点索引数据
        prim_1.addVertices(0, 1, 2)
        prim_1.addVertices(2, 3, 0)
        prim_1.addVertices(4, 5, 6)
        prim_1.addVertices(6, 7, 4)

        prim_2.addVertices(0, 1, 2)
        prim_2.addVertices(2, 3, 0)
        prim_2.addVertices(4, 5, 6)
        prim_2.addVertices(6, 7, 4)

        # 添加几何体
        geom_1.addPrimitive(prim_1)
        geom_2.addPrimitive(prim_2)

        # 创建节点
        node_1 = GeomNode('geom_node_1')
        node_2 = GeomNode('geom_node_2')

        # 添加几何体到节点
        node_1.addGeom(geom_1)
        node_2.addGeom(geom_2)

        # 创建节点路径
        np_1 = render.attachNewNode(node_1)
        np_2 = render.attachNewNode(node_2)

        # 移动节点位置
        np_1.setPos(0, 0, 0)
        np_2.setPos(1.5, 0, 0)

        # 添加碰撞检测
        self.collision_traverser = CollisionTraverser()
        self.collision_handler = CollisionHandlerQueue()

        self.collision_ray_1 = CollisionRay()
        self.collision_ray_1.setOrigin(0, 0, 0)
        self.collision_ray_1.setDirection(1, 0, 0)

        self.collision_ray_2 = CollisionRay()
        self.collision_ray_2.setOrigin(1.5, 0, 0)
        self.collision_ray_2.setDirection(-1, 0, 0)

        collision_node_1 = CollisionNode('collision_node_1')
        collision_node_1.addSolid(self.collision_ray_1)

        collision_node_2 = CollisionNode('collision_node_2')
        collision_node_2.addSolid(self.collision_ray_2)

        np_1.attachNewNode(collision_node_1)
        np_2.attachNewNode(collision_node_2)

        self.collision_traverser.addCollider(collision_node_1, self.collision_handler)
        self.collision_traverser.addCollider(collision_node_2, self.collision_handler)

        # 注册任务
        self.taskMgr.add(self.check_collision, 'check_collision')

    def check_collision(self, task):
        self.collision_traverser.traverse(render)

        if self.collision_handler.getNumEntries() > 0:
            print("有重叠部分")
        else:
            print("没有重叠部分")

        return Task.done


app = MyApp()
app.run()

这段代码使用了Panda3D的几何体、碰撞检测和任务管理功能。它创建了两个不规则六面体的顶点数据，并使用几何体和顶点索引定义了它们的形状。然后，添加了碰撞检测以检测两个不规则六面体之间是否存在重叠部分。最后，通过任务管理器来执行碰撞检测的任务，并根据检测结果输出相应的信息