[TASK] Switch to other bresenham implementation for now.
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@ -120,66 +120,66 @@ class HoughMachine {
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};
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void drawLineBresenham(int start_x, int start_y, int end_x, int end_y) {
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this->bresenham_orientation_sector = this->getOrientationSector(end_x - start_x, end_y - start_y);
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// Now adapt input
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// Output will be adapted in setPixel()
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switch(this->bresenham_orientation_sector) {
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case 0:
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// Going right, nothing to do here
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this->bresenham(start_x, start_y, end_x, end_y);
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break;
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case 1:
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// Going right, but more up
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this->bresenham(start_y, start_x, end_y, end_x);
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break;
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case 2:
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// Going left, but more up
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this->bresenham(start_y, end_x, end_y, start_x);
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break;
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case 3:
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// Going left
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this->bresenham(end_x, start_y, start_x, end_y);
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break;
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case 4:
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// Going left
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this->bresenham(end_x, end_y, start_x, start_y);
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break;
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case 5:
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// Going left, but more down
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this->bresenham(end_y, end_x, start_y, start_x);
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break;
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case 6:
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// Going right, but more down
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this->bresenham(end_y, start_x, start_y, end_x);
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break;
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case 7:
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// Going right
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this->bresenham(start_x, end_y, end_x, start_y);
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break;
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void setPixelDebug(int x, int y, int color=0) {
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int our_color = QColor::fromRgb(0, 255, 0).rgb();
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if(color == 0) color = our_color;
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std::cout << " --> SET (" << x << ", " << y << ")" << std::endl;
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this->working_copy->getImage()->setPixel(x, y, color);
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};
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void otherBresenham(int x, int x2, int y, int y2) {
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int width = x2 - x;
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int height = y2 - y;
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int dx1 = 0, dy1 = 0, dx2 = 0, dy2 = 0;
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dx1 = (width < 0) ? -1 : 1;
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dy1 = (height < 0) ? -1 : 1;
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dx2 = (width < 0) ? -1 : 1;
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int longest = abs(width);
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int shortest = abs(height);
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if(longest <= shortest) {
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longest = abs(height);
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shortest = abs(width);
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dy2 = (height < 0) ? -1 : 1;
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dx2 = 0;
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}
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int numerator = longest / 2;
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for(int i=0; i<=longest; i++) {
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this->setPixelDebug(x, y);
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numerator += shortest;
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if(numerator >= longest) {
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numerator -= longest;
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x += dx1;
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y += dy1;
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} else {
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x += dx2;
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y += dy2;
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}
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}
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};
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void bresenham(int start_x, int start_y, int end_x, int end_y) {
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int x, y;
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int delta_x, delta_y;
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int d;
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int delta_ne, delta_e;
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x = start_x;
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y = start_y;
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delta_x = end_x - start_x;
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delta_y = end_y - start_y;
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delta_ne = 2 * (delta_y - delta_x);
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delta_e = 2 * delta_y;
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d = 2 * delta_y - delta_x;
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this->setPixel(start_x, start_y, x - start_x, y - start_y);
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while(x < end_x) {
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if(d >= 0) {
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d += delta_ne; x++; y++;
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} else {
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d += delta_e; x++;
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void debugShow() {
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std::cout << "Dimensions: " << this->n_ang << " x " << this->n_rad << " | " << std::endl;
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int max_value = 0;
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for(int i=0; i<this->n_ang*this->n_rad; i++) {
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int current_value = this->hough_arr[i];
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if(current_value > max_value) max_value = current_value;
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}
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for(int x=0; x<this->n_ang; x++) {
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for(int y=0; y<this->n_rad; y++) {
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int value = qRound(255.0*this->hough_arr[x*this->n_ang+y] / max_value);
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if(value < 0) {
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std::cout << value << std::endl;
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value = 0;
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}
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if(value > 255) {
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std::cout << value << std::endl;
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value = 255;
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}
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int color = QColor::fromRgb(value, value, value).rgb();
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this->working_copy->getImage()->setPixel(x,y,color);
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}
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this->setPixel(start_x, start_y, x - start_x, y - start_y);
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}
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};
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@ -209,71 +209,120 @@ class HoughMachine {
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return orientation_sector;
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};
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void setPixel(int start_x, int start_y, int dx, int dy) {
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void drawLineBresenham(int start_x, int start_y, int end_x, int end_y) {
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this->bresenham_orientation_sector = this->getOrientationSector(end_x - start_x, end_y - start_y);
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std::cout << "START LINE: (" << start_x << ", " << start_y << ") -> (" << end_x << ", " << end_y << ") - O: " << this->bresenham_orientation_sector << std::endl;
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// other implementation for now.
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this->otherBresenham(start_x, end_x, start_y, end_y);
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// Now adapt input
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// Output will be adapted in setPixel()
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/*switch(this->bresenham_orientation_sector) {
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case 0:
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// Going right, nothing to do here
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this->bresenham(start_x, start_y, end_x, end_y);
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break;
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case 1:
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// Going right, but more up
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this->bresenham(start_y, start_x, end_y, end_x);
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break;
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case 2:
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// Going left, but more up
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this->bresenham(start_y, end_x, end_y, start_x);
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break;
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case 3:
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// Going left
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this->bresenham(end_x, start_y, start_x, end_y);
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break;
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case 4:
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// Going left
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this->bresenham(end_x, end_y, start_x, start_y);
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break;
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case 5:
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// Going left, but more down
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this->bresenham(end_y, end_x, start_y, start_x);
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break;
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case 6:
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// Going right, but more down
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this->bresenham(start_x, end_y, end_x, start_y);
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break;
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case 7:
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// Going right
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this->bresenham(start_x, end_y, end_x, start_y);
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break;
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}*/
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};
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/*void bresenham(int start_x, int start_y, int end_x, int end_y) {
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std::cout << "BRESENHAM START LINE: (" << start_x << ", " << start_y << ") -> (" << end_x << ", " << end_y << ")" << std::endl;
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int x, y;
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int delta_x, delta_y;
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int d;
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int delta_ne, delta_e;
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x = start_x;
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y = start_y;
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delta_x = end_x - start_x;
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delta_y = end_y - start_y;
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delta_ne = 2 * (delta_y - delta_x);
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delta_e = 2 * delta_y;
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d = 2 * delta_y - delta_x;
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this->setPixel(start_x, start_y, x, y);
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while(x < end_x) {
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if(d >= 0) {
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d += delta_ne; x++; y++;
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} else {
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d += delta_e; x++;
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}
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this->setPixel(start_x, start_y, x, y);
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}
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std::cout << std::endl;
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};*/
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/*void setPixel(int start_x, int start_y, int dx, int dy) {
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std::cout << "setPixel(" << start_x << ", " << start_y << ", " << dx << ", " << dy << ")" << std::endl;
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if(dx > start_x) dx = dx - start_x;
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else dx = start_x - dx;
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if(dy > start_y) dy = dy - start_y;
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else dy = start_y - dy;
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std::cout << " --> dx: " << dx << ", dy: " << dy << "" << std::endl;
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int color = QColor::fromRgb(0, 255, 0).rgb();
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//TODO: Fix this! This has to happen relative to the center point! :|
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switch(this->bresenham_orientation_sector) {
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case 0:
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// Going right, nothing to do here
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this->working_copy->getImage()->setPixel(start_x + dx, start_y + dy, color);
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this->setPixelDebug(start_x + dx, start_y + dy, color);
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break;
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case 1:
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// Going right, but more up
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this->working_copy->getImage()->setPixel(start_x + dy, start_y + dx, color);
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this->setPixelDebug(start_x + dy, start_y + dx, color);
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break;
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case 2:
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// Going left, but more up
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this->working_copy->getImage()->setPixel(start_x - dy, start_y + dx, color);
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this->setPixelDebug(start_x - dy, start_y + dx, color);
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break;
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case 3:
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// Going left
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this->working_copy->getImage()->setPixel(start_x - dx, start_y + dy, color);
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this->setPixelDebug(start_x - dx, start_y + dy, color);
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break;
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case 4:
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// Going left
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this->working_copy->getImage()->setPixel(start_x - dx, start_y - dy, color);
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this->setPixelDebug(start_x - dx, start_y - dy, color);
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break;
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case 5:
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// Going left, but more down
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this->working_copy->getImage()->setPixel(start_x - dy, start_y - dx, color);
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this->setPixelDebug(start_x + dy, start_y + dx, color); // ok
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break;
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case 6:
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// Going right, but more down
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this->working_copy->getImage()->setPixel(start_x + dy, start_y - dx, color);
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this->setPixelDebug(start_x + dy, start_y - dx, color); // ?
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break;
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case 7:
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// Going right
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this->working_copy->getImage()->setPixel(start_x + dx, start_y - dy, color);
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this->setPixelDebug(start_x + dx, start_y - dy, color);
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break;
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}
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};
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void debugShow() {
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std::cout << "Dimensions: " << this->n_ang << " x " << this->n_rad << " | " << std::endl;
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int max_value = 0;
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for(int i=0; i<this->n_ang*this->n_rad; i++) {
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int current_value = this->hough_arr[i];
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if(current_value > max_value) max_value = current_value;
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}
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for(int x=0; x<this->n_ang; x++) {
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for(int y=0; y<this->n_rad; y++) {
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int value = qRound(255.0*this->hough_arr[x*this->n_ang+y] / max_value);
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if(value < 0) {
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std::cout << value << std::endl;
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value = 0;
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}
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if(value > 255) {
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std::cout << value << std::endl;
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value = 255;
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}
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int color = QColor::fromRgb(value, value, value).rgb();
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this->working_copy->getImage()->setPixel(x,y,color);
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}
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}
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};
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};*/
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};
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@ -140,11 +140,17 @@ void ImageViewer::drawBlackLine() {
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working_copy->getImage()->setPixel(i,i,0);
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}*/
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HoughMachine* hm = new HoughMachine(original, working_copy);
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hm->drawLineBresenham(10, 10, 20, 20);
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hm->drawLineBresenham(10, 10, 20, 10);
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hm->drawLineBresenham(10, 10, 10, 20);
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hm->drawLineBresenham(10, 10, 15, 20);
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hm->drawLineBresenham(10, 10, 20, 15);
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//star centered around 20/20
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hm->drawLineBresenham(20, 20, 10, 10);
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hm->drawLineBresenham(20, 20, 20, 10);
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hm->drawLineBresenham(20, 20, 30, 10);
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hm->drawLineBresenham(20, 20, 30, 20);
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hm->drawLineBresenham(20, 20, 30, 30);
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hm->drawLineBresenham(20, 20, 20, 30);
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hm->drawLineBresenham(20, 20, 10, 30);
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hm->drawLineBresenham(20, 20, 10, 20);
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delete hm;
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updateImageDisplay();
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logFile << "Black line drawn." << std::endl;
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