Sketch Development Platform

Fork me on GitHub

point yellow = {1,1,0};
point orange = {1,0.75,0};
point white = {1,1,1};

point vec1to2 = {-width*1/4, height/2};
point vec1to3 = {width*1/4, height/2};

polygon t1 = ({width*1/4,height/2}+{width*3/4,height/2})+{width/2,0};
polygon t2 = {width/2,0} + {width*3/4,height/2} + {width*3/4 - 43.3, height/2 -25} + {width/2,50};
polygon t3 = {width/2,50} + {width*3/4 - 43.3, height/2 -25} + {width/4 + 46.3,height/2-25};

function init()->void{
}

function sub_osc(num t, num p)->num{
    return 4*((t%(p/2))/p);
}

function oscillator(num time, num period)->num{
    num mode = (2*time/period)%2;
    num sub = sub_osc(time, period);
    num out;
    if(mode ?< 1){
        return -1 + sub;
    } else{
        return 1 - sub;
    }
    return out;
}

function draw_shadow(){
    polygon tcopy = t1;
    point shadowvec = {20, -15};
    point shadowcolour = {47/255, 30/255, 46/255};
    
    tcopy = (tcopy ~ shadowcolour) -> shadowvec;
    
    draw tcopy;
    draw tcopy -> vec1to2;
    draw tcopy -> vec1to3;
}

function colour_triangles(point light, point mid, point dark)->void{
    t1 = t1 ~ dark;
    t2 = t2 ~ light;
    t3 = t3 ~ mid;
}

function draw_triforce(point shift, point hover)->void{
    draw (t1 -> shift) -> hover;
    draw (t2 -> shift) -> hover;
    draw (t3 -> shift) -> hover;
}

function render(num time)->void{
    clear;
    
    draw_shadow();
    
    num k = 0.5+(oscillator(time, 7000)+1)/2;
    num l = ((oscillator(time, 7000)+1)/4);
   
    point white = {1,1,k};
    point yellow = {1,1,l/2};
    point orange = {1, 0.75, l/4}
    
    point hover = {0, oscillator(time+3500,7000)*10};
    
    colour_triangles(white, yellow, orange);
    
    draw_triforce({0,0}, hover);
    draw_triforce(vec1to2, hover);
    draw_triforce(vec1to3, hover);
}