#include <ray.h>
Inheritance diagram for XRayTRI:
Public Methods | |
| XRayTRI () | |
| ~XRayTRI () | |
| bool | CastNext () |
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Definition at line 123 of file ray.h.
00123 {};
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Definition at line 124 of file ray.h.
00124 {};
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Reimplemented from FirstHitTRI. Definition at line 511 of file ray.cpp. References FirstHitTRI::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_radius, Ray::m_startpoint, Ray::m_steplength, Ray::m_tf, Ray::mx, Ray::my, Ray::mz, VECTOR::x, VECTOR::y, and VECTOR::z.
00511 {
00512 if(m_data == NULL) return false;
00513 if(m_tf == NULL) return false;
00514 int density = 0;
00515 int step_count = 0;
00516 VECTOR distancetomidpoint = VECTOR(mx/2.0f,my/2.0f,mz/2.0f)-m_currentpos;
00517 int steps = (int)((distancetomidpoint.length() + m_radius)/m_steplength);
00518 bool first = true;
00519 do {
00520
00521 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)) {
00522 if(first) {
00523 m_startpoint = VECTOR(m_currentpos.x,m_currentpos.y,m_currentpos.z);
00524 first = false;
00525 }
00526 float d = GetDensity(m_currentpos);
00527 density += d*m_steplength;
00528 // calculate new position
00529 }
00530 m_currentpos += m_steplength*m_direction;
00531 step_count++;
00532 }while(step_count <= steps);
00533
00534 m_currentcolor = m_tf->GetDensityColor(density);
00535 m_alpha = m_tf->GetOpacity(density);
00536 if(density == 0) {
00537 m_currentcolor = Color(0,0,0);
00538 m_alpha = 1.0;
00539 }
00540 if(m_alpha < 1.0 ) {
00541 m_currentcolor += m_backgroundcolor*(1.0f-m_alpha);
00542 }
00543 return true;
00544 }
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1.3-rc2