做毕业设计的参考文献网站,前端网站开发的公用头部,网站判断手机跳转代码,购物类网站都有哪些模块相机的运动 当物体在处于静止位置时#xff0c;相机可以在物体周围移动#xff0c;摄取不同角度的图像 移动 移动分为相机的移动#xff0c;和相机焦点的移动#xff1b;移动改变了相机相对焦点的位置#xff0c;离焦点更近或者更远#xff1b;这样就会改变被渲染的物体… 相机的运动 当物体在处于静止位置时相机可以在物体周围移动摄取不同角度的图像 移动 移动分为相机的移动和相机焦点的移动移动改变了相机相对焦点的位置离焦点更近或者更远这样就会改变被渲染的物体在视野中的部分 相机的移动可以有水平上的移动垂直方向的移动前后的移动 vtkCamera::Dolly(double value);将相机与焦点的距离除以给定的推拉值。使用大于1的值向焦点推拉
使用小于1的值远离焦点推拉。缩放
旋转 相机的旋转是相机在以焦点为中心的圆球面上移动因为相机可以水平旋转和垂直旋转水平旋转就是在相机围绕球心过朝上方向这个轴旋转也可以说是在球面上的维度进行旋转但相机的镜头始终指向焦点水平旋转就是在相机绕球面上的经线向上或者向下旋转 围绕投影方向旋转相机。这将使摄影机绕其轴旋转 vtkCamera::Roll(double angle); 围绕以焦点为中心的视图向上矢量旋转相机
请注意视图向上矢量是通过SetViewUp设置的不一定垂直于投影方向。结果是相机的水平旋转纬度 vtkCamera::Azimuth(double angle); 使用焦点作为旋转中心围绕投影方向的负值与视图向上向量的叉积旋转相机。结果是场景的垂直旋转经度 vtkCamera::Elevation(double angle); 使用相机的位置作为旋转中心围绕视图向上矢量旋转焦点
请注意视图向上矢量是通过SetViewUp设置的不一定垂直于投影方向。结果是场景的水平旋转纬度。 vtkCamera::Yaw(double angle); 使用相机的位置作为旋转中心围绕视图向上矢量和投影方向的叉积旋转焦点。
结果是摄影机垂直旋转经度。
vtkCamera::Pitch(double angle);
缩放 vtkCamera::Zoom(double factor);在透视模式下将视角减小指定的因子。在平行模式下将平行比例减小指定的因子。
值大于1表示放大
值小于1表示缩小注意当UseExplicitProjectionTransformMatrix为true时
将忽略此设置。 重置相机参数
void ResetCamera();
视频
相机的旋转 vtkCameraTest 视频代码
注意这个只有初始时旋转是对的一但旋转后再旋转可能是错的
#pragma once
//#include vtk_include.h
#include vtkAppendFilter.h
#include vtkCamera.h
#include vtkCellArray.h
#include vtkConeSource.h
#include vtkContourFilter.h
#include vtkCubeSource.h
#include vtkDataSetMapper.h
#include vtkImplicitModeller.h
#include vtkLODActor.h
#include vtkNamedColors.h
#include vtkNew.h
#include vtkPoints.h
#include vtkPolyData.h
#include vtkPolyDataMapper.h
#include vtkProperty.h
#include vtkRenderWindow.h
#include vtkRenderWindowInteractor.h
#include vtkRenderer.h
#include vtkRotationalExtrusionFilter.h
#include vtkSphereSource.h
#include vtkTextActor.h
#include vtkTextProperty.h
#include vtkTransform.h
#include vtkTransformFilter.h
#include vtkTransformPolyDataFilter.h
#include vtkWarpTo.h
#include algorithm
#include vtkInteractorStyleTrackballCamera.h
#include array#includestdio.h
#includeiostream
using namespace std;class Normal3DCameraStyle : public vtkInteractorStyleTrackballCamera
{
public:static Normal3DCameraStyle* New();vtkTypeMacro(Normal3DCameraStyle, vtkInteractorStyleTrackballCamera);//virtual void OnLeftButtonDown(void);//virtual void OnLeftButtonUp(void);//virtual void OnRightButtonDown(void);//virtual void OnRightButtonUp(void);//virtual void OnMiddleButtonDown(void);//virtual void OnMiddleButtonUp(void);//virtual void OnMouseWheelForward(void);//virtual void OnMouseWheelBackward(void);//virtual void OnMouseMove(void);// /**//* OnChar is triggered when an ASCII key is pressed. Some basic key presses//* are handled here (q for Quit, p for Pick, etc)//*///virtual void OnChar();OnKeyDown is triggered by pressing any key (identical to OnKeyPress()).An empty implementation is provided. The behavior of this function shouldbe specified in the subclass.//virtual void OnKeyDown();OnKeyUp is triggered by releaseing any key (identical to OnKeyRelease()).An empty implementation is provided. The behavior of this function shouldbe specified in the subclass.//virtual void OnKeyUp();OnKeyPress is triggered by pressing any key (identical to OnKeyDown()).An empty implementation is provided. The behavior of this function shouldbe specified in the subclass.//virtual void OnKeyPress();OnKeyRelease is triggered by pressing any key (identical to OnKeyUp()).An empty implementation is provided. The behavior of this function shouldbe specified in the subclass.//virtual void OnKeyRelease();void OnKeyPress(){switch (this-Interactor-GetKeyCode()){case a:case A:cout A endl;m_Camera-Azimuth(1);break;case b:case B:m_Camera-Roll(1);cout b endl;break;case v:case V:m_Camera-Elevation(1);cout v endl;break;}m_RenderWindows-Render();}public:vtkCamera * m_Camera;vtkRenderWindow* m_RenderWindows;
};vtkStandardNewMacro(Normal3DCameraStyle);//必须加void main(){vtkNewvtkNamedColors colors;// Set the colors.std::arrayunsigned char, 4 azArrowColor{ {255, 77, 77} };colors-SetColor(AzimuthArrowColor, azArrowColor.data());std::arrayunsigned char, 4 elevArrowColor{ {77, 255, 77} };colors-SetColor(ElevationArrowColor, elevArrowColor.data());std::arrayunsigned char, 4 rollArrowColor{ {255, 255, 77} };colors-SetColor(RollArrowColor, rollArrowColor.data());std::arrayunsigned char, 4 spikeColor{ {255, 77, 255} };colors-SetColor(SpikeColor, spikeColor.data());// Set the background color.std::arrayunsigned char, 4 bkg{ {26, 51, 102} };colors-SetColor(BkgColor, bkg.data());// Create the RenderWindow, Renderer and both ActorsvtkNewvtkRenderer ren1;vtkNewvtkRenderWindow renWin;renWin-AddRenderer(ren1);vtkNewvtkRenderWindowInteractor iren;iren-SetRenderWindow(renWin);// create a camera modelvtkNewvtkConeSource camCS;camCS-SetHeight(1.5);camCS-SetResolution(12);camCS-SetRadius(0.4);vtkNewvtkCubeSource camCBS;camCBS-SetXLength(1.5);camCBS-SetZLength(0.8);camCBS-SetCenter(0.4, 0, 0);vtkNewvtkAppendFilter camAPD;camAPD-AddInputConnection(camCS-GetOutputPort());camAPD-AddInputConnection(camCBS-GetOutputPort());vtkNewvtkDataSetMapper camMapper;camMapper-SetInputConnection(camAPD-GetOutputPort());vtkNewvtkLODActor camActor;camActor-SetMapper(camMapper);camActor-SetScale(2, 2, 2);// draw the arrowsvtkNewvtkPolyData pd;vtkNewvtkCellArray ca;vtkNewvtkPoints fp;fp-InsertNextPoint(0, 1, 0);fp-InsertNextPoint(8, 1, 0);fp-InsertNextPoint(8, 2, 0);fp-InsertNextPoint(10, 0.01, 0);fp-InsertNextPoint(8, -2, 0);fp-InsertNextPoint(8, -1, 0);fp-InsertNextPoint(0, -1, 0);ca-InsertNextCell(7);ca-InsertCellPoint(0);ca-InsertCellPoint(1);ca-InsertCellPoint(2);ca-InsertCellPoint(3);ca-InsertCellPoint(4);ca-InsertCellPoint(5);ca-InsertCellPoint(6);pd-SetPoints(fp);pd-SetPolys(ca);vtkNewvtkPolyData pd2;vtkNewvtkCellArray ca2;vtkNewvtkPoints fp2;fp2-InsertNextPoint(0, 1, 0);fp2-InsertNextPoint(8, 1, 0);fp2-InsertNextPoint(8, 2, 0);fp2-InsertNextPoint(10, 0.01, 0);ca2-InsertNextCell(4);ca2-InsertCellPoint(0);ca2-InsertCellPoint(1);ca2-InsertCellPoint(2);ca2-InsertCellPoint(3);pd2-SetPoints(fp2);pd2-SetLines(ca2);vtkNewvtkImplicitModeller arrowIM;arrowIM-SetInputData(pd);arrowIM-SetSampleDimensions(50, 20, 8);vtkNewvtkContourFilter arrowCF;arrowCF-SetInputConnection(arrowIM-GetOutputPort());arrowCF-SetValue(0, 0.2);vtkNewvtkWarpTo arrowWT;arrowWT-SetInputConnection(arrowCF-GetOutputPort());arrowWT-SetPosition(5, 0, 5);arrowWT-SetScaleFactor(0.85);arrowWT-AbsoluteOn();vtkNewvtkTransform arrowT;arrowT-RotateY(60);arrowT-Translate(-1.33198, 0, -1.479);arrowT-Scale(1, 0.5, 1);vtkNewvtkTransformFilter arrowTF;arrowTF-SetInputConnection(arrowWT-GetOutputPort());arrowTF-SetTransform(arrowT);vtkNewvtkDataSetMapper arrowMapper;arrowMapper-SetInputConnection(arrowTF-GetOutputPort());arrowMapper-ScalarVisibilityOff();// draw the azimuth arrowsvtkNewvtkLODActor a1Actor;a1Actor-SetMapper(arrowMapper);a1Actor-RotateZ(180);a1Actor-SetPosition(1, 0, -1);a1Actor-GetProperty()-SetColor(colors-GetColor3d(AzimuthArrowColor).GetData());a1Actor-GetProperty()-SetSpecularColor(colors-GetColor3d(White).GetData());a1Actor-GetProperty()-SetSpecular(0.3);a1Actor-GetProperty()-SetSpecularPower(20);a1Actor-GetProperty()-SetAmbient(0.2);a1Actor-GetProperty()-SetDiffuse(0.8);vtkNewvtkLODActor a2Actor;a2Actor-SetMapper(arrowMapper);a2Actor-RotateZ(180);a2Actor-RotateX(180);a2Actor-SetPosition(1, 0, 1);a2Actor-GetProperty()-SetColor(colors-GetColor3d(AzimuthArrowColor).GetData());a2Actor-GetProperty()-SetSpecularColor(colors-GetColor3d(White).GetData());a2Actor-GetProperty()-SetSpecular(0.3);a2Actor-GetProperty()-SetSpecularPower(20);a2Actor-GetProperty()-SetAmbient(0.2);a2Actor-GetProperty()-SetDiffuse(0.8);// draw the elevation arrowsvtkNewvtkLODActor a3Actor;a3Actor-SetMapper(arrowMapper);a3Actor-RotateZ(180);a3Actor-RotateX(90);a3Actor-SetPosition(1, -1, 0);a3Actor-GetProperty()-SetColor(colors-GetColor3d(ElevationArrowColor).GetData());a3Actor-GetProperty()-SetSpecularColor(colors-GetColor3d(White).GetData());a3Actor-GetProperty()-SetSpecular(0.3);a3Actor-GetProperty()-SetSpecularPower(20);a3Actor-GetProperty()-SetAmbient(0.2);a3Actor-GetProperty()-SetDiffuse(0.8);vtkNewvtkLODActor a4Actor;a4Actor-SetMapper(arrowMapper);a4Actor-RotateZ(180);a4Actor-RotateX(-90);a4Actor-SetPosition(1, 1, 0);a4Actor-GetProperty()-SetColor(colors-GetColor3d(ElevationArrowColor).GetData());a4Actor-GetProperty()-SetSpecularColor(colors-GetColor3d(White).GetData());a4Actor-GetProperty()-SetSpecular(0.3);a4Actor-GetProperty()-SetSpecularPower(20);a4Actor-GetProperty()-SetAmbient(0.2);a4Actor-GetProperty()-SetDiffuse(0.8);// draw the DOPvtkNewvtkTransform arrowT2;arrowT2-Scale(1, 0.6, 1);arrowT2-RotateY(90);vtkNewvtkTransformPolyDataFilter arrowTF2;arrowTF2-SetInputData(pd2);arrowTF2-SetTransform(arrowT2);vtkNewvtkRotationalExtrusionFilter arrowREF;arrowREF-SetInputConnection(arrowTF2-GetOutputPort());arrowREF-CappingOff();arrowREF-SetResolution(30);vtkNewvtkPolyDataMapper spikeMapper;spikeMapper-SetInputConnection(arrowREF-GetOutputPort());vtkNewvtkLODActor a5Actor;a5Actor-SetMapper(spikeMapper);a5Actor-SetScale(.3, .3, .6);a5Actor-RotateY(90);a5Actor-SetPosition(-2, 0, 0);a5Actor-GetProperty()-SetColor(colors-GetColor3d(SpikeColor).GetData());a5Actor-GetProperty()-SetAmbient(0.2);a5Actor-GetProperty()-SetDiffuse(0.8);// focal pointvtkNewvtkSphereSource fps;fps-SetRadius(0.5);vtkNewvtkPolyDataMapper fpMapper;fpMapper-SetInputConnection(fps-GetOutputPort());vtkNewvtkLODActor fpActor;fpActor-SetMapper(fpMapper);fpActor-SetPosition(-9, 0, 0);fpActor-GetProperty()-SetSpecularColor(colors-GetColor3d(White).GetData());fpActor-GetProperty()-SetSpecular(0.3);fpActor-GetProperty()-SetAmbient(0.2);fpActor-GetProperty()-SetDiffuse(0.8);fpActor-GetProperty()-SetSpecularPower(20);// create the roll arrowsvtkNewvtkWarpTo arrowWT2;arrowWT2-SetInputConnection(arrowCF-GetOutputPort());arrowWT2-SetPosition(5, 0, 2.5);arrowWT2-SetScaleFactor(0.95);arrowWT2-AbsoluteOn();vtkNewvtkTransform arrowT3;arrowT3-Translate(-2.50358, 0, -1.70408);arrowT3-Scale(0.5, 0.3, 1);vtkNewvtkTransformFilter arrowTF3;arrowTF3-SetInputConnection(arrowWT2-GetOutputPort());arrowTF3-SetTransform(arrowT3);vtkNewvtkDataSetMapper arrowMapper2;arrowMapper2-SetInputConnection(arrowTF3-GetOutputPort());arrowMapper2-ScalarVisibilityOff();// draw the roll arrowsvtkNewvtkLODActor a6Actor;a6Actor-SetMapper(arrowMapper2);a6Actor-RotateZ(90);a6Actor-SetPosition(-4, 0, 0);a6Actor-SetScale(1.5, 1.5, 1.5);a6Actor-GetProperty()-SetColor(colors-GetColor3d(RollArrowColor).GetData());a6Actor-GetProperty()-SetSpecularColor(colors-GetColor3d(White).GetData());a6Actor-GetProperty()-SetSpecular(0.3);a6Actor-GetProperty()-SetSpecularPower(20);a6Actor-GetProperty()-SetAmbient(0.2);a6Actor-GetProperty()-SetDiffuse(0.8);// Add the actors to the renderer, set the background and sizeren1-AddActor(camActor);ren1-AddActor(a1Actor);ren1-AddActor(a2Actor);ren1-AddActor(a3Actor);ren1-AddActor(a4Actor);ren1-AddActor(a5Actor);ren1-AddActor(a6Actor);ren1-AddActor(fpActor);ren1-SetBackground(colors-GetColor3d(BkgColor).GetData());ren1-SetBackground(colors-GetColor3d(SlateGray).GetData());renWin-SetSize(640, 480);renWin-SetWindowName(CameraModel1);// render the imagevtkCamera* cam1 (ren1-GetActiveCamera());ren1-ResetCamera();cam1-Azimuth(150);cam1-Elevation(30);cam1-Dolly(1.5);ren1-ResetCameraClippingRange();// Create a TextActor for azimuth (a1 and a2 actors color)vtkNewvtkTextActor text;text-SetInput(Azimuth);vtkTextProperty* tprop text-GetTextProperty();tprop-SetFontFamilyToArial();tprop-ShadowOff();tprop-SetLineSpacing(1.0);tprop-SetFontSize(36);tprop-SetColor(a1Actor-GetProperty()-GetColor());text-SetDisplayPosition(20, 50);ren1-AddActor2D(text);// Create a TextActor for elevation (a3 and a4 actors color)vtkNewvtkTextActor text2;text2-SetInput(Elevation);tprop text2-GetTextProperty();tprop-SetFontFamilyToArial();tprop-ShadowOff();tprop-SetLineSpacing(1.0);tprop-SetFontSize(36);tprop-SetColor(a3Actor-GetProperty()-GetColor());text2-SetDisplayPosition(20, 100);ren1-AddActor2D(text2);// Create a TextActor for roll (a6 actors color)vtkNewvtkTextActor text3;text3-SetInput(Roll);tprop text3-GetTextProperty();tprop-SetFontFamilyToArial();tprop-ShadowOff();tprop-SetLineSpacing(1.0);tprop-SetFontSize(36);tprop-SetColor(a6Actor-GetProperty()-GetColor());text3-SetDisplayPosition(20, 150);ren1-AddActor2D(text3);vtkNewNormal3DCameraStyle style;cam1-SetFocalPoint(fpActor-GetPosition());cam1-SetPosition(camActor-GetPosition());style-m_Camera cam1;style-m_RenderWindows renWin;iren-SetInteractorStyle(style);renWin-Render();iren-Initialize();iren-Start();}
