void draw_inside_circle(int cx,int cy,float r,int cnt){//外側のサークルの中心と半径
cnt--;
if(cnt<0) return;
float r_comp = 2*sqrt(3)/3;
float nr = (r_comp/(1+r_comp))*r;
float kr = r-nr;
float rad = 30*PI/180;
int nx,ny;
for(int j=0;j<3;j++){
rad += 120*PI/180;
nx = round(cx + cos(rad)*(nr));
ny = round(cy + sin(rad)*(nr));
circle(nx,ny,kr*2);
draw_inside_circle(nx,ny,kr,cnt);
}
}
void draw_triangle(int cx,int cy,int r){
float deg = 180;
);
}
void center_square(float x,float y,float len,float deg){
float ax=len ,ay=len;
float bx=-len,by=len;
float cx=-len,cy=-len;
float dx=len,dy=-len;
float eax = rot_x(ax,ay,deg), eay = rot_y(ax,ay,deg);
float ebx = rot_x(bx,by,deg), eby = rot_y(bx,by,deg);
float ecx = rot_x(cx,cy,deg), ecy = rot_y(cx,cy,deg);
eax+=x;eay+=y;
ebx+=x;eby+=y;
ecx+=x;ecy+=y;
line(eax,eay,ebx,eby);
line(ebx,eby,ecx,ecy);
}
斜め網目
rot_at_center(45);
int line_num = 20;
int f = 400;
for(int i=1;i<=line_num+20;i++){
int sx = 0-f;
int sy = (g_h/line_num)*i-f;
int ex = g_w+f;
int ey = sy;
line(sx,sy,ex,ey);
}
for(int i=1;i<=line_num+20;i++){
int sx = (g_w/line_num)*i-f;
int sy = 0-f;
int ex = sx;
int ey = g_h+f;
line(sx,sy,ex,ey);
}
noLoop();
}
void rot_at_center(int deg){
translate(g_w/2,g_h/2);
rotate(to_rad(deg));
translate(-g_w/2,-g_h/2);
}
float to_rad(float deg){
return deg*(PI/180);
}
float to_deg(float rad){
return rad*(180/PI);
}
void keyPressed(){
if(keyCode==ENTER){
save(fname);
PGraphics pg = createGraphics(g_w,g_h);
pg.beginDraw();
pg.tint(0,0);
PImage img = loadImage(fname);
img.loadPixels();
for(int j=0;j<g_w;j++){
for(int k=0;k<g_h;k++){
int c = img.get(j,k);
if(!compare_color(c,g_black)){
pg.fill(c);
pg.stroke(c);
pg.square(j,k,1);
}
}
}
pg.endDraw();
pg.save("trans"+fname);
}
}
boolean compare_color(int a,int b){
return (red(a)==red(b) && green(a)==green(b) && blue(a)==blue(b));
}
