python⼼脏线绘制代码_C++和Java命令⾏绘制⼼形图代码分
享mysql数据库基础与实例教程答案
C++和Java命令⾏绘制⼼形图案
⼼形线
⼼形线,是⼀个圆上的固定⼀点在它绕着与其相切且半径相同的另外⼀个圆周滚动时所形成的轨迹,因其形状像⼼形⽽得名。
⼼脏线亦为蚶线的⼀种。在曼德博集合正中间的图形便是⼀个⼼脏线。⼼脏线的英⽂名称“Cardioid”是 de Castillon 在1741年的《Philosophical Transactions of the Royal Society》发表的;意为“像⼼脏的”。
极坐标⽅程
⽔平⽅向: ρ=a(1-cosθ) 或 ρ=a(1+cosθ) (a>0)
垂直⽅向: ρ=a(1-sinθ) 或 ρ=a(1+sinθ) (a>0)
直⾓坐标⽅程contextmenu怎么读
⼼形线的平⾯直⾓坐标系⽅程表达式分别为 x^2+y^2+a*x=a*sqrt(x^2+y^2) 和 x^2+y^2-a*x=a*sqrt(x^2+y^2)
参数⽅程
x=a*(2*cos(t)-cos(2*t))
y=a*(2*sin(t)-sin(2*t))
所围⾯积为3/2*PI*a^2,形成的弧长为8a
通过不同变换可以有如下样式
解题思路
在直⾓坐标系中x、y轴的正⽅向分别是右侧和上⽅,原点在中间;⽽在命令⾏中正⽅向分别是右⽅和下⽅,原点在左上⾓。因此就需要进⾏坐标轴变换。
由于直⾓坐标系中的⼼形线是横着的,因此需要xy轴的变换。
由于在命令⾏具有⾏⾼这⼀固定参数,因此同样字符数的⾏和列长度是不同的(⾏会⽐列短很多),因此
⼜需要进⾏控制台x轴的拉伸操作。
C++代码
#include
#include
using namespace std;
python代码画图案#define X_DIVIDED_BY_Y 0.5
#define MAX_X (35.0 / X_DIVIDED_BY_Y)
#define MAX_Y 35.0
#define THRESHOLD 0.5
#define A 13
char getSentenceChar(const char *sentence, int &index) {
while(true) {
if (index >= strlen(sentence)) {
index = 0;
}
char c = sentence[index++];
if(' ' == c) {
index++;
} else {
return c;
}
}
}
inline float getX(float x) {
return (x - MAX_X / 2) * X_DIVIDED_BY_Y;
}
inline float getY(float y) {
return MAX_Y / 7.0 - y;
}
bool func(float x, float y) {
return (pow(x, 2) + pow(y, 2) + A * x - A * sqrt(pow(x, 2) + pow(y, 2))) < THRESHOLD;
}
void main(int argc, char** argv) {
const char *LOVE_SENTENCE = "No rose, no diamond ring, that is the simple and romantic love stories in college. The graduates have to face the approaching of June, a time to farewell their beloved. When their future is confronted with love, which one is more important? What will the lovers do in June?";
int sentenceIndex = 0;
for (int y = 0; y <= MAX_Y; y++) {
for (int x = 0; x <= MAX_X; x++) {
cout<
}
cout<
}
}
Java代码
ample.demo;
public class BenevolenceDemo {
private static final float X_DIVIDED_BY_Y = 0.5f;
private static final float MAX_X = 35f / X_DIVIDED_BY_Y;
private static final float MAX_Y = 35f;
private static final float THRESHOLD = 0.5f;
private static final float A = 13;
private static final String LOVE_SENTENCE = "No rose, no diamond ring, that is the simple and romantic love stories in college. The graduates have to face the approaching of June, a time to farewell their beloved. When their future is confronted with love, which one is more important? What will the lovers do in June?";
private static int sentenceIndex = 0;
private static char getSentenceChar() {
while(true) {
if (sentenceIndex >= LOVE_SENTENCE.length()) {
sentenceIndex = 0;
}
char c = LOVE_SENTENCE.charAt(sentenceIndex++);
if(' ' == c) {
sentenceIndex++;
firstindexof方法} else {
return c;
}
}
}
public static void main(String[] args) {
for (int y = 0; y <= MAX_Y; y++) {
for (int x = 0; x <= MAX_X; x++) {
System.out.print(func(getY(y), getX(x)) ? getSentenceChar() : '=');
}
System.out.println();
}
}
public static final float getX(float x) {
return (x - MAX_X / 2) * X_DIVIDED_BY_Y;
}
public static final float getY(float y) {
android11 data目录解决办法return MAX_Y / 7f - y;
}小视频制作教程
public static boolean func(float x, float y) {
return (Math.pow(x, 2) + Math.pow(y, 2) + A * x - A * Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2))) < THRESHOLD;
}
}
以上就是本⽂的全部内容,希望对⼤家的学习有所帮助,也希望⼤家多多⽀持码农之家。
以上就是本次给⼤家分享的关于java的全部知识点内容总结,⼤家还可以在下⽅相关⽂章⾥到相关⽂章进⼀步学习,感谢⼤家的阅读和⽀持。
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