Files
SoftwareRenderer/main.cpp

80 lines
2.5 KiB
C++

#include "fastmath.hpp"
#include "polygon.hpp"
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#define HIGHT 64
#define WIDTH 64
#define FAA_FAC 2
#define RHIGHT ((int)(HIGHT * FAA_FAC))
#define RWIDTH ((int)(WIDTH * FAA_FAC))
char *drawToString(unsigned short *img) {
char *textImg = (char *)malloc(200000 * sizeof(char));
// strcat(textImg,"\e[1;1H\e[2J"); --clear
for (int y = 0; y < HIGHT; y++) {
for (int x = 0; x < WIDTH; x++) {
// printf("%d,%d\n",x,y);
char buff[20];
unsigned short val = 0;
int my = y * FAA_FAC;
int mx = x * FAA_FAC;
val += img[my * RWIDTH + mx];
val += img[my * RWIDTH + mx + 1];
val += img[(my + 1) * RWIDTH + mx];
val += img[(my + 1) * RWIDTH + mx + 1];
sprintf(buff, "\033[38;5;%dm██\033[0m", 232 + val / 4);
strcat(textImg, buff);
}
strcat(textImg, "\n");
}
return textImg;
}
void drawImage(unsigned short *img) {
decimal heightPerPix = decimal(1.0) / decimal((float)(HIGHT * FAA_FAC));
decimal widthPerPix = decimal(1.0) / decimal((float)(WIDTH * FAA_FAC));
polygon poly = polygon(vec3(0.9, 0.9, 0.0) * decimal(128.0),
vec3(0.5, 0.1, 0.0) * decimal(128.0),
vec3(0.1, 0.9, 0.0) * decimal(128.0));
// printf("\n hpp: %f, wpp: %f
// \n",TO_FLOAT(heightPerPix),TO_FLOAT(widthPerPix)); calcViewPos(t);
for (decimal y = 0; y < decimal((float)(RHIGHT)); y += decimal(1.0)) {
for (decimal x = 0; x < decimal((float)(RWIDTH)); x += decimal(1.0)) {
vec3 p = vec3(x, y, 0.0);
if (poly.contains(p)) {
img[(y.i >> SHIFT_AMOUNT) * RWIDTH + (x.i >> SHIFT_AMOUNT)] =
(unsigned short)23; // (((-normal[1]+(1 <<
// SHIFT_AMOUNT))*14)>>SHIFT_AMOUNT);
} else {
img[(y.i >> SHIFT_AMOUNT) * RWIDTH + (x.i >> SHIFT_AMOUNT)] =
(unsigned short)0;
}
}
}
printf("done writing %d \n", *(img + sizeof(unsigned short) * 32 * 32));
}
int main() {
unsigned short *img =
(unsigned short *)malloc(128 * 128 * sizeof(unsigned short));
while (true) {
drawImage(img);
printf("%s", drawToString(img));
return 0;
// sleep(0.001);
}
// printf("%s", test);
return 0;
}