Hochschulprojekte
/
CG2_Tasks
0
0
Fork 0
Code Issues Pull Requests Activity

[TASK] Fix bresenham.

This commit is contained in:
Jan Philipp Timme 2016-01-08 12:28:17 +01:00
parent c4f6ff5790
commit 4ce9e0e6c2
1 changed files with 17 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
hough_machine.cpp
View File

@ -11,6 +11,12 @@
#include "lazy_image.cpp"
struct houghdot {
double point;
double theta;
double r;
};
class HoughMachine {
private:
@ -85,11 +91,9 @@ class HoughMachine {
pixel.getHsl(&h, &s, &l);
if(this->matching_threshold > 0) {
int threshold = this->matching_threshold;
std::cout << "Comparing " << l << " < " << threshold << std::endl;
if(l < threshold) this->doPixel(u, v);
} else {
int threshold = -this->matching_threshold;
std::cout << "Comparing " << l << " > " << threshold << std::endl;
if(l > threshold) this->doPixel(u, v);
}
}
@ -168,14 +172,14 @@ class HoughMachine {
delta_ne = 2 * (delta_y - delta_x);
delta_e = 2 * delta_y;
d = 2 * delta_y - delta_x;
this->setPixel(x, y);
this->setPixel(start_x, start_y, x - start_x, y - start_y);
while(x < end_x) {
if(d >= 0) {
d += delta_ne; x++; y++;
} else {
d += delta_e; x++;
}
this->setPixel(x, y);
this->setPixel(start_x, start_y, x - start_x, y - start_y);
}
};
@ -205,41 +209,41 @@ class HoughMachine {
return orientation_sector;
};
void setPixel(int x, int y) {
void setPixel(int start_x, int start_y, int dx, int dy) {
int color = QColor::fromRgb(0, 255, 0).rgb();
//TODO: Fix this! This has to happen relative to the center point! :|
switch(this->bresenham_orientation_sector) {
case 0:
// Going right, nothing to do here
this->working_copy->getImage()->setPixel(x, y, color);
this->working_copy->getImage()->setPixel(start_x + dx, start_y + dy, color);
break;
case 1:
// Going right, but more up
this->working_copy->getImage()->setPixel(y, x, color);
this->working_copy->getImage()->setPixel(start_x + dy, start_y + dx, color);
break;
case 2:
// Going left, but more up
this->working_copy->getImage()->setPixel(-y, x, color);
this->working_copy->getImage()->setPixel(start_x - dy, start_y + dx, color);
break;
case 3:
// Going left
this->working_copy->getImage()->setPixel(-x, y, color);
this->working_copy->getImage()->setPixel(start_x - dx, start_y + dy, color);
break;
case 4:
// Going left
this->working_copy->getImage()->setPixel(-x, -y, color);
this->working_copy->getImage()->setPixel(start_x - dx, start_y - dy, color);
break;
case 5:
// Going left, but more down
this->working_copy->getImage()->setPixel(-y, -x, color);
this->working_copy->getImage()->setPixel(start_x - dy, start_y - dx, color);
break;
case 6:
// Going right, but more down
this->working_copy->getImage()->setPixel(y, -x, color);
this->working_copy->getImage()->setPixel(start_x + dy, start_y - dx, color);
break;
case 7:
// Going right
this->working_copy->getImage()->setPixel(x, -y, color);
this->working_copy->getImage()->setPixel(start_x + dx, start_y - dy, color);
break;
}