1 /*=========================================================================
2
3 Program: Visualization Toolkit
4 Module: TestOptiXLights.cxx
5
6 Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
7 All rights reserved.
8 See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
9
10 This software is distributed WITHOUT ANY WARRANTY; without even
11 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
12 PURPOSE. See the above copyright notice for more information.
13
14 =========================================================================*/
15 // This test verifies that lighting works as expected with optix.
16 // When advanced materials are exposed in optix, it will also validate
17 // refractions and reflections
18 //
19 // The command line arguments are:
20 // -I => run in interactive mode; unless this is used, the program will
21 // not allow interaction and exit
22 // In interactive mode it responds to the keys listed
23 // vtkOptiXTestInteractor.h
24
25 #include "vtkTestUtilities.h"
26
27 #include "vtkActor.h"
28 #include "vtkCamera.h"
29 #include "vtkLight.h"
30 #include "vtkOpenGLRenderer.h"
31 #include "vtkOptiXPass.h"
32 #include "vtkOptiXRendererNode.h"
33 #include "vtkPlaneSource.h"
34 #include "vtkPLYReader.h"
35 #include "vtkPolyDataMapper.h"
36 #include "vtkPolyDataNormals.h"
37 #include "vtkProperty.h"
38 #include "vtkRenderWindow.h"
39 #include "vtkRenderWindowInteractor.h"
40 #include "vtkSmartPointer.h"
41 #include "vtkSphereSource.h"
42
43 #include "vtkOptiXTestInteractor.h"
44
TestOptiXLights(int argc,char * argv[])45 int TestOptiXLights(int argc, char* argv[])
46 {
47 vtkSmartPointer<vtkRenderWindowInteractor> iren =
48 vtkSmartPointer<vtkRenderWindowInteractor>::New();
49 vtkSmartPointer<vtkRenderWindow> renWin = vtkSmartPointer<vtkRenderWindow>::New();
50 iren->SetRenderWindow(renWin);
51 vtkSmartPointer<vtkOpenGLRenderer> renderer =
52 vtkSmartPointer<vtkOpenGLRenderer>::New();
53 renderer->AutomaticLightCreationOff();
54 renWin->AddRenderer(renderer);
55
56 const char* fileName =
57 vtkTestUtilities::ExpandDataFileName(argc, argv, "Data/bunny.ply");
58 vtkSmartPointer<vtkPLYReader> polysource = vtkSmartPointer<vtkPLYReader>::New();
59 polysource->SetFileName(fileName);
60
61 //measure so we can place things sensibly
62 polysource->Update();
63 double bds[6];
64 polysource->GetOutput()->GetBounds(bds);
65 double x0 = bds[0]*2;
66 double x1 = bds[1]*2;
67 double y0 = bds[2];
68 double y1 = bds[3]*2;
69 double z0 = bds[4];
70 double z1 = bds[5]*4;
71
72 vtkSmartPointer<vtkPolyDataNormals> normals = vtkSmartPointer<vtkPolyDataNormals>::New();
73 normals->SetInputConnection(polysource->GetOutputPort());
74
75 vtkSmartPointer<vtkPolyDataMapper> mapper=vtkSmartPointer<vtkPolyDataMapper>::New();
76 mapper->SetInputConnection(normals->GetOutputPort());
77 vtkSmartPointer<vtkActor> actor=vtkSmartPointer<vtkActor>::New();
78 actor->SetMapper(mapper);
79 actor->GetProperty()->SetColor(1.0,1.0,1.0);
80 actor->GetProperty()->SetAmbient(0.1);
81 actor->GetProperty()->SetDiffuse(1);
82 actor->GetProperty()->SetSpecularColor(1,1,1);
83 actor->GetProperty()->SetSpecular(0.9);
84 actor->GetProperty()->SetSpecularPower(500);
85 renderer->AddActor(actor);
86
87 vtkSmartPointer<vtkPlaneSource> backwall = vtkSmartPointer<vtkPlaneSource>::New();
88 backwall->SetOrigin(x0,y0,z0);
89 backwall->SetPoint1(x1,y0,z0);
90 backwall->SetPoint2(x0,y1,z0);
91 mapper=vtkSmartPointer<vtkPolyDataMapper>::New();
92 mapper->SetInputConnection(backwall->GetOutputPort());
93 actor=vtkSmartPointer<vtkActor>::New();
94 actor->SetMapper(mapper);
95 actor->GetProperty()->SetColor(1.0,1.0,1.0);
96 actor->GetProperty()->SetAmbient(0.1);
97 actor->GetProperty()->SetDiffuse(1);
98 actor->GetProperty()->SetSpecular(0);
99 renderer->AddActor(actor);
100
101 vtkSmartPointer<vtkPlaneSource> floor = vtkSmartPointer<vtkPlaneSource>::New();
102 floor->SetOrigin(x0,y0,z0);
103 floor->SetPoint1(x0,y0,z1);
104 floor->SetPoint2(x1,y0,z0);
105 mapper=vtkSmartPointer<vtkPolyDataMapper>::New();
106 mapper->SetInputConnection(floor->GetOutputPort());
107 actor=vtkSmartPointer<vtkActor>::New();
108 actor->GetProperty()->SetColor(1.0,1.0,1.0);
109 actor->GetProperty()->SetAmbient(0.1);
110 actor->GetProperty()->SetDiffuse(1);
111 actor->GetProperty()->SetSpecular(0);
112 actor->SetMapper(mapper);
113 renderer->AddActor(actor);
114
115 vtkSmartPointer<vtkPlaneSource> left = vtkSmartPointer<vtkPlaneSource>::New();
116 left->SetOrigin(x0,y0,z0);
117 left->SetPoint1(x0,y1,z0);
118 left->SetPoint2(x0,y0,z1);
119 mapper=vtkSmartPointer<vtkPolyDataMapper>::New();
120 mapper->SetInputConnection(left->GetOutputPort());
121 actor=vtkSmartPointer<vtkActor>::New();
122 actor->GetProperty()->SetColor(1.0,1.0,1.0);
123 actor->GetProperty()->SetAmbient(0.1);
124 actor->GetProperty()->SetDiffuse(1);
125 actor->GetProperty()->SetSpecular(0);
126 actor->SetMapper(mapper);
127 renderer->AddActor(actor);
128
129 vtkSmartPointer<vtkSphereSource> magnifier = vtkSmartPointer<vtkSphereSource>::New();
130 //TODO: use PathTracer_Dielectric material for this when available
131 magnifier->SetCenter(x0+(x1-x0)*0.6, y0+(y1-y0)*0.2, z0+(z1-z0)*0.7);
132 magnifier->SetRadius((x1-x0)*0.05);
133 magnifier->SetPhiResolution(30);
134 magnifier->SetThetaResolution(30);
135 mapper=vtkSmartPointer<vtkPolyDataMapper>::New();
136 mapper->SetInputConnection(magnifier->GetOutputPort());
137 actor=vtkSmartPointer<vtkActor>::New();
138 actor->GetProperty()->SetColor(1.0,1.0,1.0);
139 actor->GetProperty()->SetAmbient(0.1);
140 actor->GetProperty()->SetDiffuse(1);
141 actor->GetProperty()->SetSpecular(0);
142 actor->SetMapper(mapper);
143 renderer->AddActor(actor);
144
145 vtkSmartPointer<vtkSphereSource> discoball = vtkSmartPointer<vtkSphereSource>::New();
146 //TODO: use PathTracer_Metal material for this when available
147 discoball->SetCenter(x0+(x1-x0)*0.5, y0+(y1-y0)*0.85, z0+(z1-z0)*0.5);
148 discoball->SetRadius((x1-x0)*0.1);
149 discoball->SetPhiResolution(30);
150 discoball->SetThetaResolution(30);
151 mapper=vtkSmartPointer<vtkPolyDataMapper>::New();
152 mapper->SetInputConnection(discoball->GetOutputPort());
153 actor=vtkSmartPointer<vtkActor>::New();
154 actor->GetProperty()->SetColor(1.0,1.0,1.0);
155 actor->GetProperty()->SetAmbient(0.1);
156 actor->GetProperty()->SetDiffuse(1);
157 actor->GetProperty()->SetSpecular(0);
158 actor->SetMapper(mapper);
159 renderer->AddActor(actor);
160
161 vtkSmartPointer<vtkLight> light = vtkSmartPointer<vtkLight>::New();
162 //blue light casting shadows from infinity toward bottom left back corner
163 light->PositionalOff();
164 light->SetPosition(x0+(x1-x0)*1, y0+(y1-y0)*1, z0+(z1+z0)*1);
165 light->SetFocalPoint(x0, y0, z0);
166 light->SetLightTypeToSceneLight();
167 light->SetColor(0.0,0.0,1.0);
168 light->SetIntensity(0.3);
169 light->SwitchOn();
170 renderer->AddLight(light);
171
172 light = vtkSmartPointer<vtkLight>::New();
173 //red light casting shadows from top to bottom
174 light->PositionalOn();
175 double t = 1.8; //adjust t to see effect of positional
176 light->SetPosition( x0+(x1-x0)*0.5, y0+(y1-y0)*t, z0+(z1-z0)*0.5);
177 light->SetFocalPoint(x0+(x1-x0)*0.5, y0+(y1-y0)*0, z0+(z1-z0)*0.5);
178 light->SetLightTypeToSceneLight();
179 light->SetColor(1.0,0.0,0.0);
180 light->SetIntensity(0.3);
181 light->SwitchOn();
182 renderer->AddLight(light);
183
184 light = vtkSmartPointer<vtkLight>::New();
185 //green light following camera
186 light->PositionalOn();
187 light->SetLightTypeToHeadlight();
188 light->SetColor(0.0,1.0,0.0);
189 light->SetIntensity(0.3);
190 light->SwitchOn();
191 renderer->AddLight(light);
192
193 renderer->SetBackground(0.0,0.0,0.0);
194 renWin->SetSize(400,400);
195
196 vtkSmartPointer<vtkOptiXPass> optix=vtkSmartPointer<vtkOptiXPass>::New();
197 renderer->SetPass(optix);
198
199 //increase image quality from default (otherwise subsampling artifacts)
200 renWin->Render();
201 vtkOptiXRendererNode *renNode = optix->GetSceneGraph();
202 renderer->UseShadowsOn();
203 renNode->SetMaxFrames(5, renderer);
204 renNode->SetSamplesPerPixel(4, renderer);
205
206 vtkSmartPointer<vtkOptiXTestInteractor> style =
207 vtkSmartPointer<vtkOptiXTestInteractor>::New();
208 style->SetPipelineControlPoints(renderer, optix, nullptr);
209 iren->SetInteractorStyle(style);
210 style->SetCurrentRenderer(renderer);
211
212 iren->Start();
213
214 return 0;
215 }
216