void dragonComp(turtle_t &turt, int x, double side){
if (x == 1)
turt.forward(side);
else{
dragon(turt, x-1, side);
turt.turn_right(90);
dragonComp(turt, x-1, side);
}
}
void leaffirst(turtle_t &turt, double x)
{
turt.reset();
turt.clear();
turt.set_pos(0.0, -0.8);
turt.turn_left(90);
leaf(turt, x);
}
void star(turtle_t &turt, double x)
{
int i;
double factor=x/10;
turt.reset();
turt.clear();
turt.set_pos(0.0, -0.95);
turt.turn_left(90);
starline(turt,x);
}
//Drawing a Koch Snowflake
void koch(turtle_t &turt, double x)
{
turt.reset();
turt.clear();
turt.set_pos(-0.3, 0.5);
turt.turn_right(30);
for (int i = 0; i<3; i++)
{
triline(turt, x);
turt.turn_right(120);
}
}
void triline(turtle_t &turt, double length)
{
if (length <= 0.01)
{
turt.forward(length);
}
else
{
double newlength = length/3.0;
triline(turt, newlength);
turt.turn_left(60);
triline(turt, newlength);
turt.turn_right(120);
triline(turt, newlength);
turt.turn_left(60);
triline(turt, newlength);
}
}
void testPattern(turtle_t &turt, double x)
{
turt.reset();
turt.clear();
color_t red, green, blue;
red.r = 1.0; red.g = 0.0; red.b = 0.0;
green.r = 0.0; green.g = 1.0; green.b = 0.0;
blue.r = 0.0; blue.g = 0.0; blue.b = 1.0;
turt.set_col(red);
turt.printAttr();
turt.forward(0.2);
turt.turn_right(90);
turt.backward_move(0.05);
turt.set_col(green);
turt.back(0.2);
turt.set_bgcol(blue.r, blue.g, blue.b);
//~ turt.clear();
}
void render_drawing(turtle_t &turt)
{
//~ koch(turt, 1.0);
// testPattern(turt);
turt.reset();
turt.clear();
turt.set_bgcol(0.22, 0.69, 0.87);
turt.backward_move(0.3);
turt.turn_right(90);
turt.forward_move(0.2);
turt.set_col(0.498039, 1.0, 0.0);
int num = 20;
dragon(turt, num, 0.03/num);
}
//GLFW display callback
void renderGL(GLFWwindow* window)
{
//If a filename was given on the command line
if (file_flag)
{
//Execute the parsed commands
turtle_com_t *com;
for( liter = list.begin(); liter!=list.end(); liter++)
{
com = *liter;
turt.exec(com, window);
}
}
//Or draw the default
else
render_drawing(turt);
}
void starline(turtle_t &turt, double length)
{
double factor;
factor=length/1.5;
if(length<=0.002)
return;
else{
turt.forward(factor);
turt.turn_right(30);
turt.forward(factor);
starline(turt,factor);
turt.backward_move(factor);
turt.turn_left(60);
turt.forward(factor);
starline(turt,factor);
turt.backward_move(factor);
turt.turn_right(30);
turt.backward_move(factor);
}
}
void leaf(turtle_t &turt, double length)
{
double factor,i;
factor=length/10;
if(factor<=0.005)
return;
else{
for(i=2.0;i<=4.2;i=i+0.2){
turt.forward(factor);
turt.turn_right(45);
leaf(turt,4.2*factor/i);
turt.forward(4.8*factor/i);
turt.backward_move(4.8*factor/i);
turt.turn_left(45);
turt.forward(factor/6);
turt.turn_left(45);
leaf(turt,4.2*factor/i);
turt.forward(4.8*factor/i);
turt.backward_move(4.8*factor/i);
turt.turn_right(45.15);
}
turt.forward(factor/8);
turt.backward_move(length+3*factor);
}
}
void triline(turtle_t &turt, double length, bool arg)
{
double newlength = length/4.0;
if (length <= 0.03)
{
turt.forward(length);
}
else if (arg)
{
/*triline(turt, newlength);
turt.turn_left(60);
triline(turt, newlength);
turt.turn_right(120);
triline(turt, newlength);
turt.turn_left(60);
triline(turt, newlength);*/
triline(turt, newlength,true);
turt.turn_left(60);
triline(turt, newlength,false);
turt.turn_left(60);
triline(turt, newlength,true);
turt.turn_right(60);
triline(turt, newlength,false);
turt.turn_right(60);
triline(turt, newlength,true);
turt.turn_right(60);
triline(turt, newlength,false);
turt.turn_right(60);
triline(turt, newlength,true);
turt.turn_left(60);
triline(turt, newlength,false);
turt.turn_left(60);
triline(turt, newlength,true);
}
else{
triline(turt, newlength, false);
turt.turn_right(60);
triline(turt, newlength, true);
turt.turn_right(60);
triline(turt, newlength, false);
turt.turn_left(60);
triline(turt, newlength, true);
turt.turn_left(60);
triline(turt, newlength, false);
turt.turn_left(60);
triline(turt, newlength, true);
turt.turn_left(60);
triline(turt, newlength, false);
turt.turn_right(60);
triline(turt, newlength, true);
turt.turn_right(60);
triline(turt, newlength, false);
}
}
