/
render_drawing.cpp
117 lines (102 loc) · 2.54 KB
/
render_drawing.cpp
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/*
* CS475/CS675 - Computer Graphics
* ToyLOGO Assignment Base Code
*
* Copyright 2009-2014, Parag Chaudhuri, Department of CSE, IIT Bombay
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "render_drawing.hpp"
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);
}
}
//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 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 dragonComp(turtle_t&, int, double);
void dragon(turtle_t &turt, int x, double side){
if (x == 1)
turt.forward(side);
else {
dragon(turt, x-1, side);
turt.turn_left(90);
dragonComp(turt, x-1, side);
}
}
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 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);
}