LPython

main.py
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from lpython import i32, f64, TypeVar, Const
from numpy import empty, int32
h = TypeVar("h")
w = TypeVar("w")
@jscall
def show_img(w: i32, h: i32, A: i32[h, w]):
    pass
@jscall
def show_img_color(w: i32, h: i32, A: i32[h, w, 4]):
    pass
def main0():
    Nx: Const[i32] = 600; Ny: Const[i32] = 450; Nz: Const[i32] = 4; n_max: i32 = 255
    xcenter: f64 = f64(-0.5); ycenter: f64 = f64(0.0)
    width: f64 = f64(4); height: f64 = f64(3)
    dx_di: f64 = width/f64(Nx); dy_dj: f64 = -height/f64(Ny)
    x_offset: f64 = xcenter - f64(Nx+1)*dx_di/f64(2.0)
    y_offset: f64 = ycenter - f64(Ny+1)*dy_dj/f64(2.0)
    i: i32; j: i32; n: i32; idx: i32
    x: f64; y: f64; x_0: f64; y_0: f64; x_sqr: f64; y_sqr: f64
    image: i32[450, 600] = empty([Ny, Nx], dtype=int32)
    image_color: i32[450, 600, 4] = empty([Ny, Nx, Nz], dtype=int32)
    palette: i32[4, 3] = empty([4, 3], dtype=int32)
    for j in range(Ny):
        y_0 = y_offset + dy_dj * f64(j + 1)
        for i in range(Nx):
            x_0 = x_offset + dx_di * f64(i + 1)
            x = 0.0; y = 0.0; n = 0
            while(True):
                x_sqr = x ** 2.0
                y_sqr = y ** 2.0
                if (x_sqr + y_sqr > f64(4) or n == n_max):
                    image[j,i] = 255 - n
                    break
 
 
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