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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-FileCopyrightText: Copyright (C) 2010 The Android Open Source Project
// SPDX-License-Identifier: BSD-3-Clause AND Apache-2.0
#include <errno.h>
#include <jni.h>
#include <sstream>
#include "vtkNew.h"
#include "vtkActor.h"
#include "vtkCamera.h"
#include "vtkConeSource.h"
#include "vtkDebugLeaks.h"
#include "vtkGlyph3D.h"
#include "vtkPolyData.h"
#include "vtkPolyDataMapper.h"
#include "vtkRenderWindow.h"
#include "vtkRenderer.h"
#include "vtkSphereSource.h"
#include "vtkTextActor.h"
#include "vtkTextProperty.h"
#include "vtkAndroidRenderWindowInteractor.h"
#include "vtkCommand.h"
#include <android/log.h>
#define LOGI(...) ((void)__android_log_print(ANDROID_LOG_INFO, "NativeVTK", __VA_ARGS__))
#define LOGW(...) ((void)__android_log_print(ANDROID_LOG_WARN, "NativeVTK", __VA_ARGS__))
extern "C"
{
JNIEXPORT jlong JNICALL Java_com_kitware_JavaVTK_JavaVTKLib_init(
JNIEnv* env, jobject obj, jint width, jint height);
JNIEXPORT void JNICALL Java_com_kitware_JavaVTK_JavaVTKLib_render(
JNIEnv* env, jobject obj, jlong renWinP);
JNIEXPORT void JNICALL Java_com_kitware_JavaVTK_JavaVTKLib_onKeyEvent(JNIEnv* env, jobject obj,
jlong udp, jboolean down, jint keyCode, jint metaState, jint repeatCount);
JNIEXPORT void JNICALL Java_com_kitware_JavaVTK_JavaVTKLib_onMotionEvent(JNIEnv* env, jobject obj,
jlong udp, jint action, jint eventPointer, jint numPtrs, jfloatArray xPos, jfloatArray yPos,
jintArray ids, jint metaState);
};
struct userData
{
vtkRenderWindow* RenderWindow;
vtkRenderer* Renderer;
vtkAndroidRenderWindowInteractor* Interactor;
};
// Example of updating text as we go
class vtkExampleCallback : public vtkCommand
{
public:
static vtkExampleCallback* New() { return new vtkExampleCallback; }
virtual void Execute(vtkObject* caller, unsigned long, void*)
{
// Update cardinality of selection
double* pos = this->Camera->GetPosition();
std::ostringstream txt;
txt << "Camera positioned at: " << std::fixed << std::setprecision(2) << std::setw(6) << pos[0]
<< ", " << std::setw(6) << pos[1] << ", " << std::setw(6) << pos[2];
this->Text->SetInput(txt.str().c_str());
}
vtkExampleCallback()
{
this->Camera = 0;
this->Text = 0;
}
vtkCamera* Camera;
vtkTextActor* Text;
};
/*
* Here is where you would setup your pipeline and other normal VTK logic
*/
JNIEXPORT jlong JNICALL Java_com_kitware_JavaVTK_JavaVTKLib_init(
JNIEnv* env, jobject obj, jint width, jint height)
{
vtkRenderWindow* renWin = vtkRenderWindow::New();
char jniS[4] = { 'j', 'n', 'i', 0 };
renWin->SetWindowInfo(jniS); // tell the system that jni owns the window not us
renWin->SetSize(width, height);
vtkNew<vtkRenderer> renderer;
renWin->AddRenderer(renderer.Get());
vtkNew<vtkAndroidRenderWindowInteractor> iren;
iren->SetRenderWindow(renWin);
vtkNew<vtkSphereSource> sphere;
sphere->SetThetaResolution(8);
sphere->SetPhiResolution(8);
vtkNew<vtkPolyDataMapper> sphereMapper;
sphereMapper->SetInputConnection(sphere->GetOutputPort());
vtkNew<vtkActor> sphereActor;
sphereActor->SetMapper(sphereMapper.Get());
vtkNew<vtkConeSource> cone;
cone->SetResolution(6);
vtkNew<vtkGlyph3D> glyph;
glyph->SetInputConnection(sphere->GetOutputPort());
glyph->SetSourceConnection(cone->GetOutputPort());
glyph->SetVectorModeToUseNormal();
glyph->SetScaleModeToScaleByVector();
glyph->SetScaleFactor(0.25);
vtkNew<vtkPolyDataMapper> spikeMapper;
spikeMapper->SetInputConnection(glyph->GetOutputPort());
vtkNew<vtkActor> spikeActor;
spikeActor->SetMapper(spikeMapper.Get());
renderer->AddActor(sphereActor.Get());
renderer->AddActor(spikeActor.Get());
renderer->SetBackground(0.4, 0.5, 0.6);
vtkNew<vtkTextActor> ta;
ta->SetInput("Droids Rock");
ta->GetTextProperty()->SetColor(0.5, 1.0, 0.0);
ta->SetDisplayPosition(50, 50);
ta->GetTextProperty()->SetFontSize(32);
renderer->AddActor(ta.Get());
vtkNew<vtkExampleCallback> cb;
cb->Camera = renderer->GetActiveCamera();
cb->Text = ta.Get();
iren->AddObserver(vtkCommand::InteractionEvent, cb.Get());
struct userData* foo = new struct userData();
foo->RenderWindow = renWin;
foo->Renderer = renderer.Get();
foo->Interactor = iren.Get();
return (jlong)foo;
}
JNIEXPORT void JNICALL Java_com_kitware_JavaVTK_JavaVTKLib_render(
JNIEnv* env, jobject obj, jlong udp)
{
struct userData* foo = (userData*)(udp);
foo->RenderWindow->SwapBuffersOff(); // android does it
foo->RenderWindow->Render();
foo->RenderWindow->SwapBuffersOn(); // reset
}
JNIEXPORT void JNICALL Java_com_kitware_JavaVTK_JavaVTKLib_onKeyEvent(JNIEnv* env, jobject obj,
jlong udp, jboolean down, jint keyCode, jint metaState, jint repeatCount)
{
struct userData* foo = (userData*)(udp);
foo->Interactor->HandleKeyEvent(down, keyCode, metaState, repeatCount);
}
JNIEXPORT void JNICALL Java_com_kitware_JavaVTK_JavaVTKLib_onMotionEvent(JNIEnv* env, jobject obj,
jlong udp, jint action, jint eventPointer, jint numPtrs, jfloatArray xPos, jfloatArray yPos,
jintArray ids, jint metaState)
{
struct userData* foo = (userData*)(udp);
int xPtr[VTKI_MAX_POINTERS];
int yPtr[VTKI_MAX_POINTERS];
int idPtr[VTKI_MAX_POINTERS];
// only allow VTKI_MAX_POINTERS touches right now
if (numPtrs > VTKI_MAX_POINTERS)
{
numPtrs = VTKI_MAX_POINTERS;
}
// fill in the arrays
jfloat* xJPtr = env->GetFloatArrayElements(xPos, 0);
jfloat* yJPtr = env->GetFloatArrayElements(yPos, 0);
jint* idJPtr = env->GetIntArrayElements(ids, 0);
for (int i = 0; i < numPtrs; ++i)
{
xPtr[i] = (int)xJPtr[i];
yPtr[i] = (int)yJPtr[i];
idPtr[i] = idJPtr[i];
}
env->ReleaseIntArrayElements(ids, idJPtr, 0);
env->ReleaseFloatArrayElements(xPos, xJPtr, 0);
env->ReleaseFloatArrayElements(yPos, yJPtr, 0);
foo->Interactor->HandleMotionEvent(action, eventPointer, numPtrs, xPtr, yPtr, idPtr, metaState);
}
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