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managed directx 實現太陽系的模擬

c#代碼:

//------------------------------------------------------------------------------

//???????????Name:?dx9cs_transforms.cs

//?????????Author:?Kevin?Harris

//??Last?Modified:?06/28/05

//????Description:?Demonstrates?how?to?use?translation,?rotation,?and?scaling?

//?????????????????matrices?to?create?a?simulated?solar?system.

//???Control?Keys:?F1????-?Speed?up?rotations

//?????????????????F2????-?Slow?down?rotations

//?????????????????Space?-?Toggle?orbiting?on/off

//------------------------------------------------------------------------------

using?System;

using?System.Drawing;

using?System.Windows.Forms;

using?Microsoft.DirectX;

using?Microsoft.DirectX.Direct3D;

namespace?DX9Sample

{

????public?class?DX9Form?:?System.Windows.Forms.Form

????{

????????private?Device?d3dDevice?=?null;

????????private?bool?mousing?=?false;

????????private?Point?ptLastMousePosit;

????????private?Point?ptCurrentMousePosit;

????????private?Mesh?sunMesh;

????????private?Mesh?earthMesh;

????????private?Mesh?moonMesh;

????????private?MatrixStack?matrixStack;

????????static?private?float?elapsedTime;

????????static?private?DateTime?currentTime;

????????static?private?DateTime?lastTime;

????????private?float?speedmodifier?=?1.0f;

????????private?bool?orbitOn?=?true;

????????static?private?float?fSunSpin?=?0.0f;

????????static?private?float?fEarthSpin?=?0.0f;

????????static?private?float?fEarthOrbit?=?0.0f;

????????static?private?float?fMoonSpin?=?0.0f;

????????static?private?float?fMoonOrbit?=?0.0f;

????????struct?Vertex

????????{

????????????public?float?x,?y,?z;?//?Position?of?vertex?in?3D?space

????????????public?int?color;?????//?Diffuse?color?of?vertex

????????????public?Vertex(float?_x,?float?_y,?float?_z,?int?_color)

????????????{

????????????????x?=?_x;?y?=?_y;?z?=?_z;

????????????????color?=?_color;

????????????}

????????????public?static?readonly?VertexFormats?FVF_Flags?=?VertexFormats.Position?|?VertexFormats.Diffuse;

????????};

????????public?DX9Form()

????????{

????????????this.ClientSize?=?new?System.Drawing.Size(640,?480);

????????????this.Text?=?"Direct3D?(DX9/C#)?-?Transforms";

????????????this.SetStyle(ControlStyles.AllPaintingInWmPaint?|?ControlStyles.Opaque,?true);

????????}

????????protected?override?void?OnPaint(System.Windows.Forms.PaintEventArgs?e)

????????{

????????????currentTime?=?DateTime.Now;

????????????TimeSpan?elapsedTimeSpan?=?currentTime.Subtract(lastTime);

????????????elapsedTime?=?(float)elapsedTimeSpan.Milliseconds?*?0.001f;

????????????lastTime?=?currentTime;

????????????this.Render();

????????????this.Invalidate();

????????}

????????protected?override?void?OnKeyDown(System.Windows.Forms.KeyEventArgs?e)

????????{

????????????switch?(e.KeyCode)

????????????{

????????????????case?System.Windows.Forms.Keys.Escape:

????????????????????this.Dispose();

????????????????????break;

????????????????case?System.Windows.Forms.Keys.Space:

????????????????????orbitOn?=?!orbitOn;

????????????????????break;

????????????????case?System.Windows.Forms.Keys.F1:

????????????????????++speedmodifier;

????????????????????break;

????????????????case?System.Windows.Forms.Keys.F2:

????????????????????--speedmodifier;

????????????????????break;

????????????}

????????}

????????protected?override?void?Dispose(bool?disposing)

????????{

????????????base.Dispose(disposing);

????????}

????????static?void?Main()

????????{

????????????using?(DX9Form?frm?=?new?DX9Form())

????????????{

????????????????frm.Show();

????????????????frm.Init();

????????????????Application.Run(frm);

????????????}

????????}

????????///?<summary>

????????///?This?method?basically?creates?and?initialize?the?Direct3D?device?and

????????///?anything?else?that?doens't?need?to?be?recreated?after?a?device?

????????///?reset.

????????///?</summary>

????????private?void?Init()

????????{

????????????//

????????????//?Do?we?support?hardware?vertex?processing??If?so,?use?it.?

????????????//?If?not,?downgrade?to?software.

????????????//

????????????Caps?caps?=?Manager.GetDeviceCaps(Manager.Adapters.Default.Adapter,

???????????????????????????????????????????????DeviceType.Hardware);

????????????CreateFlags?flags;

????????????if?(caps.DeviceCaps.SupportsHardwareTransformAndLight)

????????????????flags?=?CreateFlags.HardwareVertexProcessing;

????????????else

????????????????flags?=?CreateFlags.SoftwareVertexProcessing;

????????????//

????????????//?Everything?checks?out?-?create?a?simple,?windowed?device.

????????????//

????????????PresentParameters?d3dpp?=?new?PresentParameters();

????????????d3dpp.BackBufferFormat?=?Format.Unknown;

????????????d3dpp.SwapEffect?=?SwapEffect.Discard;

????????????d3dpp.Windowed?=?true;

????????????d3dpp.EnableAutoDepthStencil?=?true;

????????????d3dpp.AutoDepthStencilFormat?=?DepthFormat.D16;

????????????d3dpp.PresentationInterval?=?PresentInterval.Immediate;

????????????d3dDevice?=?new?Device(0,?DeviceType.Hardware,?this,?flags,?d3dpp);

????????????//?Register?an?event-handler?for?DeviceReset?and?call?it?to?continue

????????????//?our?setup.

????????????d3dDevice.DeviceReset?+=?new?System.EventHandler(this.OnResetDevice);

????????????OnResetDevice(d3dDevice,?null);

????????}

????????///?<summary>

????????///?This?event-handler?is?a?good?place?to?create?and?initialize?any?

????????///?Direct3D?related?objects,?which?may?become?invalid?during?a?

????????///?device?reset.

????????///?</summary>

????????public?void?OnResetDevice(object?sender,?EventArgs?e)

????????{

????????????Device?device?=?(Device)sender;

????????????device.Transform.Projection?=

????????????????Matrix.PerspectiveFovLH(Geometry.DegreeToRadian(45.0f),

????????????????(float)this.ClientSize.Width?/?this.ClientSize.Height,

????????????????0.1f,?100.0f);

????????????device.RenderState.Lighting?=?false;

????????????device.RenderState.CullMode?=?Cull.None;

????????????device.RenderState.FillMode?=?FillMode.WireFrame;

????????????//

????????????//?We'll?use?the?Mesh.Sphere?method?to?create?three?simple?sphere?

????????????//?meshes?to?experiment?with.

????????????//

????????????sunMesh?=?Mesh.Sphere(device,?1.0f,?20,?20);

????????????earthMesh?=?Mesh.Sphere(device,?1.0f,?10,?10);

????????????moonMesh?=?Mesh.Sphere(device,?0.5f,?8,?8);

????????????//

????????????//?Unfortunately,?the?Mesh.Sphere?utility?function?creates?a?mesh?

????????????//?with?no?color,?so?we'll?need?to?make?a?clone?of?the?original?

????????????//?meshes?using?a?FVF?code?that?does?include?color?so?we?can?set?up?

????????????//?the?Earth?and?Sun?with?color.

????????????//

????????????//?Once?that's?been?done,?we'll?need?to?set?the?color?values?to??

????????????//?something?appropriate?for?our?solar?system?model.

????????????//

????????????//?Clone?the?original?Earth?mesh?and?make?it?blue

????????????//

????????????Mesh?tempMesh?=?earthMesh.Clone(earthMesh.Options.Value,?Vertex.FVF_Flags,?device);

????????????Vertex[]?vertData?=

????????????????(Vertex[])tempMesh.VertexBuffer.Lock(0,?typeof(Vertex),

???????????????????????????????????????????????????????LockFlags.None,

???????????????????????????????????????????????????????tempMesh.NumberVertices);

????????????for?(int?i?=?0;?i?<?vertData.Length;?++i)

????????????????vertData[i].color?=?Color.Blue.ToArgb();

????????????tempMesh.VertexBuffer.Unlock();

????????????earthMesh.Dispose();

????????????earthMesh?=?tempMesh;

????????????//

????????????//?Clone?the?original?Sun?mesh?and?make?it?yellow

????????????//

????????????tempMesh?=?sunMesh.Clone(sunMesh.Options.Value,?Vertex.FVF_Flags,?device);

????????????vertData?=

????????????????(Vertex[])tempMesh.VertexBuffer.Lock(0,?typeof(Vertex),

???????????????????????????????????????????????????????LockFlags.None,

???????????????????????????????????????????????????????tempMesh.NumberVertices);

????????????for?(int?i?=?0;?i?<?vertData.Length;?++i)

????????????????vertData[i].color?=?Color.Yellow.ToArgb();

????????????tempMesh.VertexBuffer.Unlock();

????????????sunMesh.Dispose();

????????????sunMesh?=?tempMesh;

????????????//

????????????//?Create?a?matrix?stack

????????????//

????????????matrixStack?=?new?MatrixStack();

????????}

????????//*

????????/*????///?<summary>

????????????///?This?method?is?dedicated?completely?to?rendering?our?3D?scene?and?is

????????????///?is?called?by?the?OnPaint()?event-handler.

????????????///?

????????????///?Render?a?solar?system?using?the?D3DXMATRIX?utility?class.

????????????///?</summary>

????????????private?void?Render()

????????????{

????????????????//?Now?we?can?clear?just?view-port's?portion?of?the?buffer?to?red

????????????????d3dDevice.Clear(?ClearFlags.Target?|?ClearFlags.ZBuffer,?

?????????????????????????????????Color.FromArgb(255,?0,?0,?0),?1.0f,?0?);

????????????????d3dDevice.BeginScene();

????????????????//

????????????????//?Have?the?view?matrix?move?the?view?move?us?to?a?good?vantage?point?so?

????????????????//?we?can?see?the?Sun?sitting?at?the?origin?while?the?Earth?orbits?it.

????????????????//

????????????????d3dDevice.Transform.View?=?Matrix.LookAtLH(?new?Vector3(0.0f,?2.0f,?-25.0f),?//?Camera?position

????????????????????????????????????????????????????????????new?Vector3(0.0f,?0.0f,?0.0f),???//?Look-at?point

????????????????????????????????????????????????????????????new?Vector3(0.0f,?1.0f,?0.0f));??//?Up?vector

????????????????if(?orbitOn?==?true?)

????????????????{

????????????????????fSunSpin?+=?speedmodifier?*?(elapsedTime?*?10.0f);

????????????????????fEarthSpin??+=?speedmodifier?*?(elapsedTime?*?100.0f);

????????????????????fEarthOrbit?+=?speedmodifier?*?(elapsedTime?*?20.0f);

????????????????????fMoonSpin??+=?speedmodifier?*?(elapsedTime?*?50.0f);

????????????????????fMoonOrbit?+=?speedmodifier?*?(elapsedTime?*?200.0f);

????????????????}

????????????????//

????????????????//?The?Sun?is?easy?because?the?mesh?for?it?is?initially?created?centered??

????????????????//?at?origin.?All?we?have?to?do?is?spin?it?by?rotating?it?about?the?Y?axis

????????????????//?and?scale?it?by?5.0f.

????????????????//

????????????????Matrix?mSunScale?=?Matrix.Identity;

????????????????Matrix?mSunSpinRotation?=?Matrix.Identity;

????????????????Matrix?mSunMatrix?=?Matrix.Identity;

????

????????????????mSunSpinRotation.RotateY(?Geometry.DegreeToRadian(?fSunSpin?)?);

????????????????mSunScale.Scale(?5.0f,?5.0f,?5.0f?);

????????????????//?Now,?concatenate?them?together

????????????????mSunMatrix?=?mSunScale?*???????//?1.?Uniformly?scale?the?Sun?up?in?size

?????????????????????????????mSunSpinRotation;?//?2.?and?then?spin?it?on?its?axis.

????????????????d3dDevice.Transform.World?=?mSunMatrix;

????????????????sunMesh.DrawSubset(0);

????????????????//

????????????????//?The?Earth?is?a?little?more?complicated?since?it?needs?to?spin?as?well?

????????????????//?as?orbit?the?Sun.?This?can?be?done?by?combining?three?transformations?

????????????????//?together.

????????????????//

????????????

????????????????Matrix?mEarthTranslationToOrbit?=?Matrix.Identity;

????????????????Matrix?mEarthSpinRotation?=?Matrix.Identity;

????????????????Matrix?mEarthOrbitRotation?=?Matrix.Identity;

????????????????Matrix?mEarthMatrix?=?Matrix.Identity;

????????????????mEarthSpinRotation.RotateY(?Geometry.DegreeToRadian(?fEarthSpin?)?);

????????????????mEarthTranslationToOrbit.Translate(?0.0f,?0.0f,?10.0f?);

????????????????mEarthOrbitRotation.RotateY(?Geometry.DegreeToRadian(?fEarthOrbit?)?);

????????????????//?Now,?concatenate?them?together

????????????????mEarthMatrix?=?mEarthSpinRotation?*???????//?1.?Spin?the?Earth?on?its?own?axis.

???????????????????????????????mEarthTranslationToOrbit?*?//?2.?Then?translate?it?away?from?the?origin?(where?the?Sun's?at)

???????????????????????????????mEarthOrbitRotation;???????//?3.?and?rotate?it?again?to?make?it?orbit?the?origin?(or?the?Sun).

????????????????d3dDevice.Transform.World?=?mEarthMatrix;

????????????????earthMesh.DrawSubset(0);

????????????????//

????????????????//?The?Moon?is?the?hardest?to?understand?since?it?needs?to?not?only?spin?on

????????????????//?its?own?axis?and?orbit?the?Earth,?but?needs?to?follow?the?Earth,?

????????????????//?which?is?orbiting?the?Sun.

????????????????//

????????????????//?This?can?be?done?by?combining?five?transformations?together?with?the?last

????????????????//?two?being?borrowed?from?the?Earth's?transformation.

????????????????//

????????????????Matrix?mMoonTranslationToOrbit?=?Matrix.Identity;

????????????????Matrix?mMoonSpinRotation?=?Matrix.Identity;

????????????????Matrix?mMoonOrbitRotation?=?Matrix.Identity;

????????????????Matrix?mMoonMatrix?=?Matrix.Identity;

????????????????mMoonSpinRotation.RotateY(?Geometry.DegreeToRadian(?fMoonSpin?)?);

????????????????mMoonOrbitRotation.RotateY(?Geometry.DegreeToRadian(?fMoonOrbit?)?);

????????????????mMoonTranslationToOrbit.Translate(?0.0f,?0.0f,?2.0f?);

????????????????//

????????????????//?The?key?to?understanding?the?first?three?transforms?is?to?pretend?that?

????????????????//?the?Earth?is?located?at?the?origin.?We?know?it's?not,?but?if?we?pretend?

????????????????//?that?it?is,?we?can?set?up?the?Moon?just?like?the?we?did?the?Earth?since?

????????????????//?the?Moon?orbits?the?Earth?just?like?the?Earth?orbits?the?Sun.

????????????????//

????????????????//?Once?the?Moon's?transforms?are?set?up?we?simply?reuse?the?Earth's?

????????????????//?translation?and?rotation?matrix,?which?placed?it?in?orbit,?to?offset

????????????????//?the?Moon?out?to?where?it?should?be

?following?the?Earth.

????????????????//?

????????????????//?Now,?concatenate?them?together

????????????

????????????????mMoonMatrix?=?mMoonSpinRotation?*????????//?1.?Spin?the?Moon?on?its?own?axis.

??????????????????????????????mMoonTranslationToOrbit?*??//?2.?Then?translate?it?away?from?the?origin?(pretending?that?the?Earth?is?there)

??????????????????????????????mMoonOrbitRotation?*???????//?3.?and?rotate?it?again?to?make?it?orbit?the?origin?(or?the?pretend?Earth).

??????????????????????????

??????????????????????????????mEarthTranslationToOrbit?*?//?4.?Now,?translate?out?to?where?the?Earth?is?really?at

??????????????????????????????mEarthOrbitRotation;???????//?5.?and?move?with?it?by?matching?its?orbit?of?the?Earth.

????????????????d3dDevice.Transform.World?=?mMoonMatrix;

????????????????moonMesh.DrawSubset(0);

????????????????d3dDevice.EndScene();

????????????????d3dDevice.Present();

????????????}*/

????????//******************************************************************************//

????????//<summary>

????????//This?method?is?dedicated?completely?to?rendering?our?3D?scene?and

????????//is?called?by?the?OnPaint()?event-handler.

????????//Render?a?solar?system?using?the?D3DXMATRIX?utility?class?and?a??

????????//matrix?stack?similar?to?OpenGL's.?See?the?note?below?for?details.

????????//Note:

????????//Direct3D?uses?the?world?and?view?matrices?that?we?set?to?configure?

????????//several?internal?data?structures.?Each?time?we?set?a?new?world?or?

????????//view?matrix,?the?system?is?forced?to?recalculate?these?internal?

????????//structures.?Therefore,?setting?these?matrices?frequently,?which?is?

????????//the?case?for?applications?that?require?a?high?frame-rate,?is?

????????//computationally?expensive.?We?can?minimize?the?number?of?required?

????????//calculations?by?concatenating?our?world?and?view?matrices?into?a?

????????//combined?world-view?matrix?that?we?set?as?the?world?matrix.?

????????//With?the?view?matrix?combined?in?with?each?world?matrix?that?we?set,?

????????//we?no?longer?have?to?set?the?view?matrix?separately?and?incur?its?

????????//overhead.?Instead,?we?simply?set?the?view?matrix?to?the?identity?

????????//once?and?leave?it?untouched?during?all?calculations.

????????//For?clarity,?Direct3D?samples?rarely?employ?this?optimization?since?

????????//it?confuses?beginners.

????????//</summary>

????????private?void?Render()

????????{

????????????//Now?we?can?clear?just?view-port's?portion?of?the?buffer?to?red

????????????d3dDevice.Clear(ClearFlags.Target?|?ClearFlags.ZBuffer,

?????????????????????????????Color.FromArgb(255,?0,?0,?0),?1.0f,?0);

????????????d3dDevice.BeginScene();

????????????//Have?the?view?matrix?move?the?view?move?us?to?a?good?vantage?

????????????//point?so?we?can?see?the?Sun?sitting?at?the?origin?while?the?

????????????//Earth?orbits?it.

????????????d3dDevice.Transform.View?=?Matrix.LookAtLH(new?Vector3(0.0f,?2.0f,?-25.0f),?//?Camera?position

????????????????????????????????????????????????????????new?Vector3(0.0f,?0.0f,?0.0f),???//?Look-at?point

????????????????????????????????????????????????????????new?Vector3(0.0f,?1.0f,?0.0f));??//?Up?vector

????????????matrixStack.LoadMatrix(d3dDevice.Transform.View);

????????????if?(orbitOn?==?true)

????????????{

????????????????fSunSpin?+=?speedmodifier?*?(elapsedTime?*?10.0f);

????????????????fEarthSpin?+=?speedmodifier?*?(elapsedTime?*?100.0f);

????????????????fEarthOrbit?+=?speedmodifier?*?(elapsedTime?*?20.0f);

????????????????fMoonSpin?+=?speedmodifier?*?(elapsedTime?*?50.0f);

????????????????fMoonOrbit?+=?speedmodifier?*?(elapsedTime?*?200.0f);

????????????}

????????????//The?Sun?is?easy?because?the?mesh?for?it?is?initially?created?

????????????//centered??at?origin.?All?we?have?to?do?is?spin?it?by?rotating?it?

????????????//about?the?Y?axis?and?scale?it?by?5.0f.

????????????Matrix?mSunScale?=?Matrix.Identity;

????????????Matrix?mSunSpinRotation?=?Matrix.Identity;

????????????Matrix?mSunMatrix?=?Matrix.Identity;

????????????mSunSpinRotation.RotateY(Geometry.DegreeToRadian(fSunSpin));

????????????mSunScale.Scale(5.0f,?5.0f,?5.0f);

????????????//Now,?concatenate?them?together

????????????mSunMatrix?=?mSunScale?*???????//?1.?Uniformly?scale?the?Sun?up?in?size

?????????????????????????mSunSpinRotation;?//?2.?and?then?spin?it?on?its?axis.

????????????matrixStack.Push();

????????????{

????????????????matrixStack.MultiplyMatrixLocal(mSunMatrix);

????????????????d3dDevice.Transform.World?=?matrixStack.Top;

????????????????sunMesh.DrawSubset(0);

????????????}

????????????matrixStack.Pop();

????????????//The?Earth?is?a?little?more?complicated?since?it?needs?to?spin?as?

????????????//well?as?orbit?the?Sun.?This?can?be?done?by?combining?three?

????????????//transformations?together.

????????????Matrix?mEarthTranslationToOrbit?=?Matrix.Identity;

????????????Matrix?mEarthSpinRotation?=?Matrix.Identity;

????????????Matrix?mEarthOrbitRotation?=?Matrix.Identity;

????????????Matrix?mEarthMatrix?=?Matrix.Identity;

????????????mEarthSpinRotation.RotateY(Geometry.DegreeToRadian(fEarthSpin));

????????????mEarthTranslationToOrbit.Translate(0.0f,?0.0f,?12.0f);

????????????mEarthOrbitRotation.RotateY(Geometry.DegreeToRadian(fEarthOrbit));

????????????//Now,?concatenate?them?together

????????????mEarthMatrix?=?mEarthSpinRotation?*???????//?1.?Spin?the?Earth?on?its?own?axis.

???????????????????????????mEarthTranslationToOrbit?*?//?2.?Then?translate?it?away?from?the?origin?(where?the?Sun's?at)

???????????????????????????mEarthOrbitRotation;???????//?3.?and?rotate?it?again?to?make?it?orbit?the?origin?(or?the?Sun).

????????????matrixStack.Push();

????????????{

????????????????matrixStack.MultiplyMatrixLocal(mEarthMatrix);

????????????????d3dDevice.Transform.World?=?matrixStack.Top;

????????????????earthMesh.DrawSubset(0);

????????????}

????????????matrixStack.Pop();

????????????//The?Moon?is?the?hardest?to?understand?since?it?needs?to?not?only?

????????????//spin?on?its?own?axis?and?orbit?the?Earth,?but?needs?to?follow?

????????????//the?Earth,?which?is?orbiting?the?Sun.

????????????//This?can?be?done?by?combining?five?transformations?together?

????????????//with?the?last?two?being?borrowed?from?the?Earth's?transformation.

????????????Matrix?mMoonTranslationToOrbit?=?Matrix.Identity;

????????????Matrix?mMoonSpinRotation?=?Matrix.Identity;

????????????Matrix?mMoonOrbitRotation?=?Matrix.Identity;

????????????Matrix?mMoonMatrix?=?Matrix.Identity;

????????????mMoonSpinRotation.RotateY(Geometry.DegreeToRadian(fMoonSpin));

????????????mMoonOrbitRotation.RotateY(Geometry.DegreeToRadian(fMoonOrbit));

????????????mMoonTranslationToOrbit.Translate(0.0f,?0.0f,?2.0f);

????????????//The?key?to?understanding?the?first?three?transforms?is?to?

????????????//pretend?that?the?Earth?is?located?at?the?origin.?We?know?it's?

????????????//not,?but?if?we?pretend?that?it?is,?we?can?set?up?the?Moon?just?

????????????//like?the?we?did?the?Earth?since?the?Moon?orbits?the?Earth?just?

????????????//like?the?Earth?orbits?the?Sun.

????????????//Once?the?Moon's?transforms?are?set?up?we?simply?reuse?the?Earth's?

????????????//translation?and?rotation?matrix,?which?placed?it?in?orbit,?to?

????????????//offset?the?Moon?out?to?where?it?should?be

?following?the?Earth.

????????????//Now,?concatenate?them?together

????????????mMoonMatrix?=?mMoonSpinRotation?*????????//?1.?Spin?the?Moon?on?its?own?axis.

??????????????????????????mMoonTranslationToOrbit?*??//?2.?Then?translate?it?away?from?the?origin?(pretending?that?the?Earth?is?there)

??????????????????????????mMoonOrbitRotation?*???????//?3.?and?rotate?it?again?to?make?it?orbit?the?origin?(or?the?pretend?Earth).

??????????????????????????mEarthTranslationToOrbit?*?//?4.?Now,?translate?out?to?where?the?Earth?is?really?at

??????????????????????????mEarthOrbitRotation;???????//?5.?and?move?with?it?by?matching?its?orbit?of?the?Earth.

????????????matrixStack.Push();

????????????{

????????????????matrixStack.MultiplyMatrixLocal(mMoonMatrix);

????????????????d3dDevice.Transform.World?=?matrixStack.Top;

????????????????moonMesh.DrawSubset(0);

????????????}

????????????matrixStack.Pop();

????????????d3dDevice.EndScene();

????????????d3dDevice.Present();

????????}

????}

}

注意:
兩個render()函數同樣的效果,但是2個中用了MatrixStack.
最后的效果:
o_simulated solar system.jpg

by:mzty
at:2006年6月22日

posted on 2006-06-22 15:39 夢在天涯閱讀(1948) 評論(2) 編輯收藏引用所屬分類: DirectX

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# re: managed directx 實現太陽系的模擬 2008-01-09 16:11 lsh2011

# re: managed directx 實現太陽系的模擬 2008-12-12 17:05 饅頭

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