From 6efc7db89cc1b0f7717a7c000f74cdd28214d3ca Mon Sep 17 00:00:00 2001
From: Andrew Maclean <andrew.amaclean@gmail.com>
Date: Thu, 22 Oct 2020 13:20:16 +1100
Subject: [PATCH] Modernising the code, improving images
---
src/Cxx/Utilities/ShareCamera.cxx | 132 +++++++++++++-----
src/CxxHowTo.md | 2 +
.../Cxx/Utilities/TestShareCamera.png | 4 +-
3 files changed, 101 insertions(+), 37 deletions(-)
diff --git a/src/Cxx/Utilities/ShareCamera.cxx b/src/Cxx/Utilities/ShareCamera.cxx
index e9e2b4380e5..a33254da0ed 100644
--- a/src/Cxx/Utilities/ShareCamera.cxx
+++ b/src/Cxx/Utilities/ShareCamera.cxx
@@ -1,66 +1,128 @@
-#include <vtkSphereSource.h>
-#include <vtkProperty.h>
+#include <vtkActor.h>
+#include <vtkCamera.h>
+#include <vtkColorSeries.h>
+#include <vtkConeSource.h>
+#include <vtkCubeSource.h>
+#include <vtkCylinderSource.h>
+#include <vtkNamedColors.h>
+#include <vtkNew.h>
#include <vtkPolyData.h>
-#include <vtkSmartPointer.h>
+#include <vtkPolyDataAlgorithm.h>
#include <vtkPolyDataMapper.h>
-#include <vtkActor.h>
+#include <vtkProperty.h>
#include <vtkRenderWindow.h>
-#include <vtkRenderer.h>
#include <vtkRenderWindowInteractor.h>
+#include <vtkRenderer.h>
+#include <vtkSmartPointer.h>
+#include <vtkSphereSource.h>
-int main(int, char *[])
+#include <map>
+#include <vector>
+
+int main(int, char*[])
{
- vtkSmartPointer<vtkRenderWindow> renderWindow =
- vtkSmartPointer<vtkRenderWindow>::New();
+ vtkNew<vtkNamedColors> colors;
+
+ // We store background colors in a vector. Then we extract the red, green and
+ // blue components later when coloring the reneder background.
+ std::vector<vtkColor3ub> rendererColors;
+ vtkNew<vtkColorSeries> colorSeries;
+ colorSeries->SetColorSchemeByName("Brewer Qualitative Pastel2");
+ rendererColors.push_back(colorSeries->GetColor(0));
+ rendererColors.push_back(colorSeries->GetColor(1));
+ rendererColors.push_back(colorSeries->GetColor(2));
+ rendererColors.push_back(colorSeries->GetColor(3));
- vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
- vtkSmartPointer<vtkRenderWindowInteractor>::New();
+ vtkNew<vtkRenderWindow> renderWindow;
+
+ vtkNew<vtkRenderWindowInteractor> renderWindowInteractor;
renderWindowInteractor->SetRenderWindow(renderWindow);
// Define viewport ranges
- double xmins[4] = {0,.5,0,.5};
- double xmaxs[4] = {0.5,1,0.5,1};
- double ymins[4] = {0,0,.5,.5};
- double ymaxs[4]= {0.5,0.5,1,1};
+ double xmins[4] = {0, 0.5, 0, 0.5};
+ double xmaxs[4] = {0.5, 1, 0.5, 1};
+ double ymins[4] = {0, 0, 0.5, 0.5};
+ double ymaxs[4] = {0.5, 0.5, 1, 1};
vtkCamera* camera = nullptr;
- for(unsigned i = 0; i < 4; i++)
+ // Using the superclass for the sources
+ std::vector<vtkSmartPointer<vtkPolyDataAlgorithm>> sources;
+
+ for (unsigned i = 0; i < 4; i++)
{
- vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New();
+ switch (i)
+ {
+ case 0: {
+ // Create a sphere
+ vtkNew<vtkSphereSource> sphereSource;
+ sphereSource->SetCenter(0.0, 0.0, 0.0);
+ sphereSource->Update();
+ sources.push_back(sphereSource);
+ break;
+ }
+ case 1: {
+ // Create a cone
+ vtkNew<vtkConeSource> coneSource;
+ coneSource->SetCenter(0.0, 0.0, 0.0);
+ coneSource->Update();
+ sources.push_back(coneSource);
+ break;
+ }
+ case 2: {
+ // Create a cube
+ vtkNew<vtkCubeSource> cubeSource;
+ cubeSource->SetCenter(0.0, 0.0, 0.0);
+ cubeSource->Update();
+ sources.push_back(cubeSource);
+ break;
+ }
+ default:
+ case 3: {
+ // Create a cylinder
+ vtkNew<vtkCylinderSource> cylinderSource;
+ cylinderSource->SetCenter(0.0, 0.0, 0.0);
+ cylinderSource->Update();
+ sources.push_back(cylinderSource);
+ }
+ };
+
+ vtkNew<vtkPolyDataMapper> mapper;
+ mapper->SetInputConnection(sources[i]->GetOutputPort());
+
+ vtkNew<vtkActor> actor;
+ actor->SetMapper(mapper);
+ actor->GetProperty()->SetColor(colors->GetColor3d("Tomato").GetData());
+
+ vtkNew<vtkRenderer> renderer;
+ renderer->AddActor(actor);
+ double r, g, b;
+ r = rendererColors[i].GetRed() / 255.0;
+ g = rendererColors[i].GetGreen() / 255.0;
+ b = rendererColors[i].GetBlue() / 255.0;
+ renderer->SetBackground(r, g, b);
renderWindow->AddRenderer(renderer);
- if(i == 0)
+ if (i == 0)
{
camera = renderer->GetActiveCamera();
+ camera->Azimuth(30);
+ camera->Elevation(30);
}
else
{
renderer->SetActiveCamera(camera);
}
- renderer->SetViewport(xmins[i],ymins[i],xmaxs[i],ymaxs[i]);
-
- // Create a sphere
- vtkSmartPointer<vtkSphereSource> sphereSource = vtkSmartPointer<vtkSphereSource>::New();
- sphereSource->SetCenter(0.0, 0.0, 0.0);
- sphereSource->SetRadius(5);
- sphereSource->Update();
-
- // Create a mapper and actor
- vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New();
- mapper->SetInputConnection(sphereSource->GetOutputPort());
- vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New();
- actor->SetMapper(mapper);
- renderer->AddActor(actor);
- renderer->ResetCamera();
-
- renderWindow->Render();
- renderWindow->SetWindowName("Multiple ViewPorts");
+ renderer->SetViewport(xmins[i], ymins[i], xmaxs[i], ymaxs[i]);
+ renderer->ResetCamera();
}
+ renderWindow->Render();
+ renderWindow->SetWindowName("ShareCamera");
+
renderWindowInteractor->Start();
return EXIT_SUCCESS;
diff --git a/src/CxxHowTo.md b/src/CxxHowTo.md
index d6e0a1e9513..27e1293157e 100644
--- a/src/CxxHowTo.md
+++ b/src/CxxHowTo.md
@@ -20,12 +20,14 @@ Here are some snippets or examples that highlight interesting features that may
| Example Name | Comments | Image |
| -------------- | ---------------------- | ------- |
+[ShareCamera](/Cxx/Utilities/ShareCamera) | Use the same camera for all renderers.
[MergeSelections](/Cxx/PolyData/MergeSelections) | Use the same camera for all renderers.
## Coloring
| Example Name | Comments | Image |
| -------------- | ---------------------- | ------- |
+[ShareCamera](/Cxx/Utilities/ShareCamera) | Store background colors in a vector for later extraction of the red, green and blue components.
[KochanekSplineDemo](/Cxx/PolyData/KochanekSplineDemo) | How to color the slider components.
[MergeSelections](/Cxx/PolyData/MergeSelections) | A nifty way to get a "harmonious" set of window colors, using vtkNamedColors and vtkColorSeries.
diff --git a/src/Testing/Baseline/Cxx/Utilities/TestShareCamera.png b/src/Testing/Baseline/Cxx/Utilities/TestShareCamera.png
index 9c5ee1c1f2c..572728d6a73 100644
--- a/src/Testing/Baseline/Cxx/Utilities/TestShareCamera.png
+++ b/src/Testing/Baseline/Cxx/Utilities/TestShareCamera.png
@@ -1,3 +1,3 @@
version https://git-lfs.github.com/spec/v1
-oid sha256:edf2f7943988be68e40e2a21b7fcef1aac90ad61ff0da11b43fcad33ae6abd4c
-size 6926
+oid sha256:301bbe51287a813a7894f9eaa320d07a07e809c749d65c770331b2adc5b1a86e
+size 15174
--
GitLab