#include <ray.h>
Inheritance diagram for MaxIntensityNN:
Public Methods | |
| MaxIntensityNN () | |
| ~MaxIntensityNN () | |
| bool | CastNext () |
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Definition at line 100 of file ray.h.
00100 {};
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Definition at line 101 of file ray.h.
00101 {};
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Reimplemented from Ray. Definition at line 402 of file ray.cpp. References Data::GetDensity(), Transfunc::GetDensityColor(), Transfunc::GetOpacity(), VECTOR::length(), Ray::m_alpha, Ray::m_backgroundcolor, Ray::m_currentcolor, Ray::m_currentpos, Ray::m_data, Ray::m_direction, Ray::m_light, Ray::m_radius, Ray::m_startpoint, Ray::m_steplength, Ray::m_tf, Ray::mx, Ray::my, Ray::mz, ROUND, VECTOR::x, VECTOR::y, and VECTOR::z.
00402 {
00403 if(m_data == NULL) return false;
00404 if(m_tf == NULL) return false;
00405 int maxintensity = 0;
00406 int step_count = 0;
00407 bool first = true;
00408 VECTOR distancetomidpoint = VECTOR(mx/2.0f,my/2.0f,mz/2.0f)-m_currentpos;
00409 int steps = (int)((distancetomidpoint.length() + m_radius)/m_steplength);
00410 do {
00411
00412 if((m_currentpos.x >= 0.0)&&(m_currentpos.y >= 0.0)&&(m_currentpos.z >= 0.0)&&(m_currentpos.x < mx)&&(m_currentpos.y < my)&&(m_currentpos.z < mz)) {
00413 if(first) {
00414 m_startpoint = VECTOR(m_currentpos.x,m_currentpos.y,m_currentpos.z);
00415 first = false;
00416 }
00417 int d = m_data->GetDensity((int)ROUND(m_currentpos.x),(int)ROUND(m_currentpos.y),(int)ROUND(m_currentpos.z));
00418 if(d > maxintensity) {
00419 maxintensity = d;
00420 }
00421 }
00422 // calculate new position
00423 m_currentpos += m_steplength*m_direction;
00424
00425 step_count++;
00426 }while(step_count <= steps);
00427 m_light = false;
00428 m_currentcolor = m_tf->GetDensityColor(maxintensity);
00429 m_alpha = m_tf->GetOpacity(maxintensity);
00430 if(maxintensity == 0) {
00431 m_currentcolor = Color(0,0,0);
00432 m_alpha = 1.0;
00433 }
00434 if(m_alpha < 1.0 ) m_currentcolor += m_backgroundcolor*(1.0 - m_alpha);
00435 return true;
00436 }
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1.3-rc2