Hochschulprojekte/CG2_Tasks
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[TASK] Step forward, step back. This is harder than expected.

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This commit is contained in:
Jan Philipp Timme 2016-01-08 02:17:38 +01:00
parent b92850f4c9
commit c4f6ff5790
1 changed files with 67 additions and 10 deletions
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75
hough_machine.cpp
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@ -120,6 +120,40 @@ class HoughMachine {
this->bresenham_orientation_sector = this->getOrientationSector(end_x - start_x, end_y - start_y); this->bresenham_orientation_sector = this->getOrientationSector(end_x - start_x, end_y - start_y);
// Now adapt input // Now adapt input
// Output will be adapted in setPixel() // Output will be adapted in setPixel()
switch(this->bresenham_orientation_sector) {
case 0:
// Going right, nothing to do here
this->bresenham(start_x, start_y, end_x, end_y);
break;
case 1:
// Going right, but more up
this->bresenham(start_y, start_x, end_y, end_x);
break;
case 2:
// Going left, but more up
this->bresenham(start_y, end_x, end_y, start_x);
break;
case 3:
// Going left
this->bresenham(end_x, start_y, start_x, end_y);
break;
case 4:
// Going left
this->bresenham(end_x, end_y, start_x, start_y);
break;
case 5:
// Going left, but more down
this->bresenham(end_y, end_x, start_y, start_x);
break;
case 6:
// Going right, but more down
this->bresenham(end_y, start_x, start_y, end_x);
break;
case 7:
// Going right
this->bresenham(start_x, end_y, end_x, start_y);
break;
}
}; };
void bresenham(int start_x, int start_y, int end_x, int end_y) { void bresenham(int start_x, int start_y, int end_x, int end_y) {
@ -158,34 +192,57 @@ class HoughMachine {
// Do matrix multiplication // Do matrix multiplication
double new_dx = dx * cosoct + dy * neg_sinoct; double new_dx = dx * cosoct + dy * neg_sinoct;
double new_dy = dx * sinoct + dy * cosoct; double new_dy = dx * sinoct + dy * cosoct;
int orientation_sector = 0;
if(new_dy < 0) { if(new_dy < 0) {
new_dx = -new_dx; new_dx = -new_dx;
new_dy = -new_dy; new_dy = -new_dy;
orientation_sector += 4;
} }
int orientation_sector; if(new_dx >= 0 && new_dx >= new_dy) orientation_sector += 0;
if(new_dx >= 0 && new_dx >= new_dy) orientation_sector = 0; if(new_dx >= 0 && new_dx < new_dy) orientation_sector += 1;
if(new_dx >= 0 && new_dx < new_dy) orientation_sector = 1; if(new_dx < 0 && -new_dx < new_dy) orientation_sector += 2;
if(new_dx < 0 && -new_dx < new_dy) orientation_sector = 2; if(new_dx < 0 && -new_dx >= new_dy) orientation_sector += 3;
if(new_dx < 0 && -new_dx >= new_dy) orientation_sector = 3;
return orientation_sector; return orientation_sector;
}; };
void setPixel(int x, int y) { void setPixel(int x, int y) {
int color = QColor::fromRgb(0, 255, 0).rgb(); 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) { switch(this->bresenham_orientation_sector) {
case 0: case 0:
// Going right, nothing to do here
this->working_copy->getImage()->setPixel(x, y, color);
break; break;
case 1: case 1:
//TODO // Going right, but more up
this->working_copy->getImage()->setPixel(y, x, color);
break; break;
case 2: case 2:
// Going left, but more up
this->working_copy->getImage()->setPixel(-y, x, color);
break; break;
case 3: case 3:
// Going left
this->working_copy->getImage()->setPixel(-x, y, color);
break;
case 4:
// Going left
this->working_copy->getImage()->setPixel(-x, -y, color);
break;
case 5:
// Going left, but more down
this->working_copy->getImage()->setPixel(-y, -x, color);
break;
case 6:
// Going right, but more down
this->working_copy->getImage()->setPixel(y, -x, color);
break;
case 7:
// Going right
this->working_copy->getImage()->setPixel(x, -y, color);
break; break;
} }
this->working_copy->getImage()->setPixel(x, y, color);
}; };
void debugShow() { void debugShow() {