[Toy Projects] 돌아가는 입체 정육면체

다음과 같이 돌아가는 입체 정육면체이 출력되는 c언어 코드이다.

 

#include <stdio.h>
#include <string.h>
#include <math.h>
#include <windows.h>

float A, B, C;

float cubeWidth = 20;
int width = 160, height = 44;
float zBuffer[160 * 44];
char buffer[160 * 44];
int backgroundASCIICode = '.';
int distanceFromCam = 100;
float horizontalOffset;
float K1 = 40;

float incrementSpeed = 0.6;

float x, y, z;
float ooz;
int xp, yp;
int idx;

int k;

float cubeX, cubeY;

void clearScreen() {
    HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE);
    COORD cursorPosition = { 0, 0 };
    SetConsoleCursorPosition(hConsole, cursorPosition);
}

float calculateX(int i, int j, int k) {
    return j * sin(A) * sin(B) * cos(C) - k * cos(A) * sin(B) * cos(C) +
        j * cos(A) * sin(C) + k * sin(A) * sin(C) + i * cos(B) * cos(C);
}

float calculateY(int i, int j, int k) {
    return j * cos(A) * cos(C) + k * sin(A) * cos(C) -
        j * sin(A) * sin(B) * sin(C) + k * cos(A) * sin(B) * sin(C) -
        i * cos(B) * sin(C);
}

float calculateZ(int i, int j, int k) {
    return k * cos(A) * cos(B) - j * sin(A) * cos(B) + i * sin(B);
}

void calculateForSurface(float cubeX, float cubeY, float cubeZ, int ch) {
    x = calculateX(cubeX, cubeY, cubeZ);
    y = calculateY(cubeX, cubeY, cubeZ);
    z = calculateZ(cubeX, cubeY, cubeZ) + distanceFromCam;
    ooz = 1 / z;
    xp = (int)(width / 2 + horizontalOffset + K1 * ooz * x * 2);
    yp = (int)(height / 2 + K1 * ooz * y);
    idx = xp + yp * width;
    if (idx >= 0 && idx < width * height) {
        if (ooz > zBuffer[idx]) {
            zBuffer[idx] = ooz;
            buffer[idx] = ch;
        }
    }
}

int main() {
    while (1) {
        memset(buffer, backgroundASCIICode, width * height);
        for (int i = 0; i < width * height; i++) {
            zBuffer[i] = 0;
        }
        cubeWidth = 20;
        horizontalOffset = -2 * cubeWidth;

        for (cubeX = -cubeWidth; cubeX < cubeWidth; cubeX += incrementSpeed) {
            for (cubeY = -cubeWidth; cubeY < cubeWidth; cubeY += incrementSpeed) {
                calculateForSurface(cubeX, cubeY, -cubeWidth, '@');
                calculateForSurface(cubeWidth, cubeY, cubeX, '$');
                calculateForSurface(-cubeWidth, cubeY, -cubeX, '~');
                calculateForSurface(-cubeX, cubeY, cubeWidth, '#');
                calculateForSurface(cubeX, -cubeWidth, -cubeY, ';');
                calculateForSurface(cubeX, cubeWidth, cubeY, '+');
            }
        }

        clearScreen();
        for (k = 0; k < width * height; k++) {
            putchar(k % width ? buffer[k] : 10);
        }
        A += 0.05;
        B += 0.05;
        C += 0.01;
        Sleep(16);
    }
    return 0;
}

 

 

깃허브 주소: https://github.com/youngmumi/C-Practice/tree/main/Toy_project