环境介绍

python3.8

numpy

matplotlib

一、绘制一个三维的爱心

关于这一步,我采用的是大佬博客中的最后一种绘制方法。当然,根据我的代码习惯,我还是稍做了一点点修改的。

class Guess:
    def __init__(self, bbox=(-1.5, 1.5), resolution=50, lines=20) -> None:
        """
        bbox: 控制画格的大小
        resolution: 控制爱心的分辨率
        lines: 控制等高线的数量
        """
        self.xmin, self.xmax, self.ymin, self.ymax, self.zmin, self.zmax = bbox*3
        A = np.linspace(self.xmin, self.xmax, resolution)
        self.B = np.linspace(self.xmin, self.xmax, lines)
        self.A1, self.A2 = np.meshgrid(A, A)
        

    def coordinate(self, x, y, z):
        """
        生成坐标
        """
        return (x**2+(9/4)*y**2+z**2-1)**3-x**2*z**3-(9/80)*y**2*z**3

    def draw(self, ax):
        """
        绘制坐标
        """
        for z in self.B:
            X, Y = self.A1, self.A2
            Z = self.coordinate(X, Y, z)+z
            cset = ax.contour(X, Y, Z, [z], zdir='z', colors=('pink',))

        for y in self.B:
            X, Z = self.A1, self.A2
            Y = self.coordinate(X, y, Z)+y
            cset = ax.contour(X, Y, Z, [y], zdir='y', colors=('pink',))

        for x in self.B:
            Y, Z = self.A1, self.A2
            X = self.coordinate(x, Y, Z) + x
            cset = ax.contour(X, Y, Z, [x], zdir='x', colors=('pink',))

    def run(self):
        fig = plt.figure()
        ax = fig.add_subplot(projection='3d')
        ax.set_zlim3d(self.zmin, self.zmax)
        ax.set_xlim3d(self.xmin, self.xmax)
        ax.set_ylim3d(self.ymin, self.ymax)
        plt.show()

但是这可以达到我们想要的效果吗?

显然不能!于是我们开始加入亿点点细节!

二、细节点

1.加入时间序列

想要心脏跳起来,我们就需要有时间维度的变化。那怎么做最合理呢?这里仅展示修改的代码位置。

代码如下(示例):

class Guess:
    def __init__(self, bbox=(-1.5, 1.5), resolution=50, lines=20) -> None:
        plt.ion()                                         # 开启画布的动态图模式
        self.xmin, self.xmax, self.ymin, self.ymax, self.zmin, self.zmax = bbox*3
        self.time = time.time()                           # 这里有一个衡量的时间坐标,很合理吧
        A = np.linspace(self.xmin, self.xmax, resolution)
        self.B = np.linspace(self.xmin, self.xmax, lines)
        self.A1, self.A2 = np.meshgrid(A, A)

    def run(self, count):
        """
        加入count是我们想循环的次数
        """
        fig = plt.figure()
        for i in range(count):
            plt.clf()                               # 每次清除画布
            ax = fig.add_subplot(projection='3d')
            ax.set_zlim3d(self.zmin, self.zmax)
            ax.set_xlim3d(self.xmin, self.xmax)
            ax.set_ylim3d(self.ymin, self.ymax)
            times = time.time()-self.t/ime          # 计算画布的当前时间状态
            self.draw(ax, coef)
            plt.show()

 

2.加入心脏的跳动

心脏的跳动当然不会是线性的了,我们需要心脏的跳动是有层次感的,并且还是可以做往返运动的。

emmmmm… 这么说来,cos是不是就是做这个用的?

于是…
代码如下(示例):

def __init__(self, bbox=(-1.5, 1.5), resolution=50, lines=20, scale=1.2) ->
 None:
        """
        scale: 心脏缩放的系数
        """
        self.xmin, self.xmax, self.ymin, self.ymax, self.zmin, self.zmax = bbox*3
        plt.ion() 
        self.scale = scale   # scale: 心脏缩放的系数 设置为全局变量
        self.time = time.time()
        A = np.linspace(self.xmin, self.xmax, resolution)
        self.B = np.linspace(self.xmin, self.xmax, lines)
        self.A1, self.A2 = np.meshgrid(A, A)

    def draw(self, ax, coef):
        """
        coef: 使得心脏可以按照时间跳动
        """
        for z in self.B:
            X, Y = self.A1, self.A2
            Z = self.coordinate(X, Y, z)+z
            cset = ax.contour(X * coef, Y * coef, Z * coef, [z * coef], zdir='z', colors=('pink',))

        for y in self.B:
            X, Z = self.A1, self.A2
            Y = self.coordinate(X, y, Z)+y
            cset = ax.contour(X * coef, Y * coef, Z * coef, [y * coef], zdir='y', colors=('pink',))

        for x in self.B:
            Y, Z = self.A1, self.A2
            X = self.coordinate(x, Y, Z) + x
            cset = ax.contour(X * coef, Y * coef, Z * coef, [x * coef], zdir='x', colors=('pink',))

    def run(self, count):
        """
        加入count是我们想循环的次数
        """
        fig = plt.figure()
        for i in range(count):
            plt.clf()                               # 每次清除画布
            ax = fig.add_subplot(projection='3d')
            ax.set_zlim3d(self.zmin, self.zmax)
            ax.set_xlim3d(self.xmin, self.xmax)
            ax.set_ylim3d(self.ymin, self.ymax)
            times = time.time()-self.time
            coef = np.cos(times) * (self.scale-1) + 1
            # coef 是用来放缩心脏的大小的,加入cos来使它有节奏的跳动
            self.draw(ax, coef)
            plt.pause(0.01)
            plt.show()

很好,这样我们就有了一个可以跳动的心脏,那么到这结束了嘛?

 

一个好的展示

当然没有!我们希望对象看到的时候他稍微有点东西,所以让它跳动却不能改变方向,岂不是看的不够全面?所以我们在加最后亿点点细节:

 
    def run(self, count):
        fig = plt.figure()
        for i in range(count):
            plt.clf()
            ax = fig.add_subplot(projection='3d')
            ax.set_title("你对象的名字?")              # 加上你对象的小name
            ax.set_zlim3d(self.zmin, self.zmax)
            ax.set_xlim3d(self.xmin, self.xmax)
            ax.set_ylim3d(self.ymin, self.ymax)
            times = time.time()-self.time
            ax.view_init(10, 100+np.cos(times) * 10)   # 让三维坐标图可以变换坐标展示
            coef = np.cos(times) * (self.scale-1) + 1
            self.draw(ax, coef)
            plt.pause(0.01)  # 让绘制出来的心脏可以显示
            plt.show()

完整代码

import time
import numpy as np
import matplotlib.pyplot as plt


class Guess:
    def __init__(self, bbox=(-1.5, 1.5), resolution=50, lines=20, scale=1.2) -> None:
        self.xmin, self.xmax, self.ymin, self.ymax, self.zmin, self.zmax = bbox*3
        plt.ion() 
        self.scale = scale
        self.time = time.time()
        A = np.linspace(self.xmin, self.xmax, resolution)
        self.B = np.linspace(self.xmin, self.xmax, lines)
        self.A1, self.A2 = np.meshgrid(A, A)
        Python交流群:748989764

    def coordinate(self, x, y, z):
        return (x**2+(9/4)*y**2+z**2-1)**3-x**2*z**3-(9/80)*y**2*z**3

    def draw(self, ax, coef):
        for z in self.B:
            X, Y = self.A1, self.A2
            Z = self.coordinate(X, Y, z)+z
            cset = ax.contour(X * coef, Y * coef, Z * coef, [z * coef], zdir='z', colors=('pink',))

        for y in self.B:
            X, Z = self.A1, self.A2
            Y = self.coordinate(X, y, Z)+y
            cset = ax.contour(X * coef, Y * coef, Z * coef, [y * coef], zdir='y', colors=('pink',))

        for x in self.B:
            Y, Z = self.A1, self.A2
            X = self.coordinate(x, Y, Z) + x
            cset = ax.contour(X * coef, Y * coef, Z * coef, [x * coef], zdir='x', colors=('pink',))

    def run(self, count):
        fig = plt.figure()
        for i in range(count):
            plt.clf()
            ax = fig.add_subplot(projection='3d')
            ax.set_title("2LiuYu")
            ax.set_zlim3d(self.zmin, self.zmax)
            ax.set_xlim3d(self.xmin, self.xmax)
            ax.set_ylim3d(self.ymin, self.ymax)
            times = time.time()-self.time
            ax.view_init(10, 100+np.cos(times) * 10)
            coef = np.cos(times) * (self.scale-1) + 1
            self.draw(ax, coef)
            plt.pause(0.01)
            plt.show()


if __name__ == '__main__':
    demo = Guess()
    demo.run(1000)

 

 


posted on 2023-03-18 16:06  小明谈Python  阅读(1208)  评论(0编辑  收藏  举报