void rotacionaPoint(int x, int y, char imagem[MAXIMO][MAXIMO]){
x = (x * cos(PI/4)) + (y * (- sin(PI/4))) ;
y = (x * sin(PI/4)) + (y * cos(PI/4));
printf("\n\nAntes da transposicao: %d %d\n", x, y);
transPoint(x,y, imagem);
}
int main(void) {
float x1, y1, x2, y2, a, b, x, y;
int i,j;
char imagem[MAXIMO][MAXIMO];
printf("Digite as coordenadas do ponto A:\n");
scanf("%f %f", &x1, &y1);
printf("Digite as coordenadas do ponto B:\n");
scanf("%f %f", &x2, &y2);
/*if(x1 == x2) exit(1);
else {
a = (y2-y1)/(x2-x1);
b = y1 - a*x1;
}*/
for(j=0; j < MAXIMO; j++){
for(i=0; i < MAXIMO; i++){
imagem[i][j] = '.';
}
}
/*i = x1;
j = MAXIMO - y1;
imagem[j][i] = 219;
i = x2;
j = MAXIMO - y2;
imagem[j][i] = 219;
x = x1+1;
y = a*x + b;*/
/*while (y < y2 - 1.0){
i = x;
j = MAXIMO - y;
imagem[j][i] = 219;
y = a*(++x) + b;
}*/
/*for(j=0; j < MAXIMO; j++){
for(i=0; i < MAXIMO; i++){
printf("%c ",imagem[j][i]);
}
printf("\n");
}*/
printf("\n");
printf("\n");
printf("Hoje eh dia de CQC!\n\n");
transPoint(x1,y1, imagem);
transPoint(x2,y2, imagem);
rotacionaPoint(x1,y1, imagem);
rotacionaPoint(x2,y2, imagem);
for(j=0; j < MAXIMO; j++){
for(i=0; i < MAXIMO; i++){
printf("%c ",imagem[j][i]);
}
printf("\n");
}
printf("\n");
printf("\n");
getchar();
getchar();
}
int testCoordTransToCart(FILE * f)
{
fprintf (f, "\t+++++ Enter testCoordTransToCart() +++++\n");
int ntests=0, res=0;
Point Points[] = {
Point(1, 2),
Point(0, 0),
Point(1, 0),
Point(cos(pi/3), sin(pi/3)),
Point(cos(pi/2), sin(pi/2)),
Point(1,0),
Point(cos(-pi/3), sin(-pi/3)),
Point(cos(-pi/6), sin(-pi/6)),
Point(cos(5*pi/6), sin(-2*pi/6)),
};
const int NPOINTS = sizeof(Points) / sizeof(*Points);
double cosphi=1, sinphi=0;
Point transPoint(0,0), expectedPoint(0,0);
Point Center(0,0);
fprintf (f, "\t\tcosphi=%.2f, sinphi=%.2f, Center(%.2f, %.2f)\n", cosphi, sinphi, Center._x, Center._y);
for(int i=0; i<NPOINTS-1; i++) {
transPoint = Points[i].TransformToCartesianCoordinates(Center, cosphi, sinphi);
res += ( transPoint == Points[i] )?1:0; //phi==0!
ntests++;
fprintf (f, "%2d. res=%2d, P(%.2f, %.2f), T(%.2f, %.2f)\n", ntests, res, Points[i]._x, Points[i]._y, transPoint._x, transPoint._y);
}
//--------------------------------------------------------------------------------------
cosphi = 0.5; // pi/3
sinphi = 0.8660254037844386; //pi/3
fprintf (f, "\t\tcosphi=%.2f, sinphi=%.2f, Center(%.2f, %.2f)\n", cosphi, sinphi, Center._x, Center._y);
for(int i=0; i<NPOINTS-1; i++) {
transPoint = Points[i].TransformToCartesianCoordinates(Center, cosphi, sinphi);
expectedPoint = Points[i].Rotate(cosphi, sinphi);
res += ( transPoint == expectedPoint )?1:0; //phi==0!
ntests++;
fprintf (f, "%2d. res=%2d, P(%.2f, %.2f), T(%.2f, %.2f), E(%.2f, %.2f)\n", ntests, res, Points[i]._x, Points[i]._y, transPoint._x, transPoint._y, expectedPoint._x, expectedPoint._y);
}
//--------------------------------------------------------------------------------------
cosphi = 0.5; // -pi/3
sinphi = -0.8660254037844386; // -pi/3
fprintf (f, "\t\tcosphi=%.2f, sinphi=%.2f, Center(%.2f, %.2f)\n", cosphi, sinphi, Center._x, Center._y);
for(int i=0; i<NPOINTS-1; i++) {
transPoint = Points[i].TransformToCartesianCoordinates(Center, cosphi, sinphi);
expectedPoint = Points[i].Rotate(cosphi, sinphi);
res += ( transPoint == expectedPoint )?1:0; //phi==0!
ntests++;
fprintf (f, "%2d. res=%2d, P(%.2f, %.2f), T(%.2f, %.2f), E(%.2f, %.2f)\n", ntests, res, Points[i]._x, Points[i]._y, transPoint._x, transPoint._y, expectedPoint._x, expectedPoint._y);
}
//--------------------------------------------------------------------------------------
Center._x =(1);
Center._y =(1);
cosphi = 0.5; // pi/3
sinphi = 0.8660254037844386; //pi/3
fprintf (f, "\t\tcosphi=%.2f, sinphi=%.2f, Center(%.2f, %.2f)\n", cosphi, sinphi, Center._x, Center._y);
for(int i=0; i<NPOINTS-1; i++) {
transPoint = Points[i].TransformToCartesianCoordinates(Center, cosphi, sinphi);
expectedPoint = Points[i].Rotate(cosphi, sinphi)+Center;
res += ( transPoint == expectedPoint )?1:0; //phi==0!
ntests++;
fprintf (f, "%2d. res=%2d, P(%.2f, %.2f), T(%.2f, %.2f), E(%.2f, %.2f)\n", ntests, res, Points[i]._x, Points[i]._y, transPoint._x, transPoint._y, expectedPoint._x, expectedPoint._y);
}
fprintf (f, "\t+++++ Leave testCoordTransToCart() +++++\n\n");
return (res==ntests)?1:0;
}
