arkorty/donut.c
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Update main.c

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This commit is contained in:
Arkaprabha Chakraborty
2022-01-09 07:27:04 +05:30
parent ea6430b9eb
commit 1871908fc2
1 changed files with 16 additions and 9 deletions
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25
main.c
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@@ -6,12 +6,16 @@
#include <unistd.h> #include <unistd.h>
#define clear_terminal() printf("\e[1;1H\e[2J"); // Clears the terminal #define clear_terminal() printf("\e[1;1H\e[2J"); // Clears the terminal
#define STEP_ROT_X 0.0093
#define STEP_ROT_Y 0.0048
#define STEP_THETA 0.031
#define STEP_PHI 0.016
// Function allocates memory for the frame buffer // Function allocates memory for the frame buffer
char **allocate_memory(int size) { char **allocate_memory(int size) {
char **array = malloc(size * sizeof(char *)); char **array = malloc(size * sizeof(char *));
for (int i = 0; i < size; i++) for (int i = 0; i < size; ++i)
array[i] = malloc(size * sizeof(char)); array[i] = malloc(size * sizeof(char));
return array; return array;
@@ -33,14 +37,17 @@ int get_terminal_size() {
// Function dumps the frame into the terminal // Function dumps the frame into the terminal
void dump_frame(char **frame, int size) { void dump_frame(char **frame, int size) {
for (int i = 0; i < size; i++) for (int i = 0; i < size; ++i) {
printf("%s\n", frame[i]); for (int j = 0; j < size; ++j)
putchar(frame[i][j]);
putchar('\n');
}
} }
// Function builds the frame and returns the frame buffer // Function builds the frame and returns the frame buffer
char **build_frame(char **frame, int frame_num, int size, int K) { char **build_frame(char **frame, int frame_num, int size, int K) {
float x = frame_num * 0.0093; // Rotational speed around the x axis float x = frame_num * STEP_ROT_X; // Rotational speed around the x axis
float y = frame_num * 0.0048; // Rotational speed around the y axis float y = frame_num * STEP_ROT_Y; // Rotational speed around the y axis
float cos_x = cos(x), sin_x = sin(x); // Precomputing sines and cosines of x float cos_x = cos(x), sin_x = sin(x); // Precomputing sines and cosines of x
float cos_y = cos(y), sin_y = sin(y); // Precomputing sines and cosines of y float cos_y = cos(y), sin_y = sin(y); // Precomputing sines and cosines of y
@@ -48,20 +55,20 @@ char **build_frame(char **frame, int frame_num, int size, int K) {
float z_buffer[size][size]; // Declaring buffer for storing z coordinates float z_buffer[size][size]; // Declaring buffer for storing z coordinates
// Initializing frame buffer and z buffer // Initializing frame buffer and z buffer
for (int i = 0; i < size; i++) for (int i = 0; i < size; ++i)
for (int j = 0; j < size; j++) { for (int j = 0; j < size; ++j) {
frame[i][j] = ' '; frame[i][j] = ' ';
z_buffer[i][j] = 0; z_buffer[i][j] = 0;
} }
// Loop uses theta to revolve a point around the center of the circle // Loop uses theta to revolve a point around the center of the circle
// 6.283186 = 2 * Pi = 360° // 6.283186 = 2 * Pi = 360°
for (float theta = 0; theta < 6.283186; theta += 0.031) { for (float theta = 0; theta < 6.283186; theta += STEP_THETA) {
// Precomputing sines and cosines of theta // Precomputing sines and cosines of theta
float cos_theta = cos(theta), sin_theta = sin(theta); float cos_theta = cos(theta), sin_theta = sin(theta);
// Loop uses phi to revolve the circle around the center of the torus // Loop uses phi to revolve the circle around the center of the torus
for (float phi = 0; phi < 6.283186; phi += 0.016) { for (float phi = 0; phi < 6.283186; phi += STEP_PHI) {
// Precomputing sines and cosines of phi // Precomputing sines and cosines of phi
float cos_phi = cos(phi), sin_phi = sin(phi); float cos_phi = cos(phi), sin_phi = sin(phi);