Difference between revisions of "GAM670/DPS905 Weekly Schedule 20111"
(→This Week) |
(→This Week) |
||
| (35 intermediate revisions by the same user not shown) | |||
| Line 9: | Line 9: | ||
* Assignment Discussion | * Assignment Discussion | ||
* Review of base code | * Review of base code | ||
| + | ** camera, sound, and light attachments now made at the Frame class | ||
| + | ** textures still attach at the object level | ||
| + | ** texture connection uncoupled from drawing | ||
| + | ** time tracking now within HUD class completely | ||
| + | ** introduction of relative reference frames | ||
| + | ** very simple collision detection | ||
* Relative Reference Frames | * Relative Reference Frames | ||
** Recursive calls | ** Recursive calls | ||
| − | **: Frame::position() | + | **: Vector Frame::position() |
| − | **: Frame::rotation() | + | **: Matrix Frame::rotation() |
| − | **: Frame::world() | + | **: Matrix Frame::world() |
** Detaching from and attaching to a parent frame | ** Detaching from and attaching to a parent frame | ||
**: Frame::attachTo() | **: Frame::attachTo() | ||
| Line 20: | Line 26: | ||
**: normal + constant - examples | **: normal + constant - examples | ||
**: equation of a plane: dot(n, x) + D = 0 | **: equation of a plane: dot(n, x) + D = 0 | ||
| − | **: positive side of plane dot(n, x) + D > 0 | + | **: positive side of a plane dot(n, x) + D > 0 |
| − | |||
**: test a point for presence within a set of planes | **: test a point for presence within a set of planes | ||
**: normal calculations - general rotation matrix - vector and angle | **: normal calculations - general rotation matrix - vector and angle | ||
** ViewingFrustum | ** ViewingFrustum | ||
**: parameters | **: parameters | ||
| − | ** | + | **:: near-clipping plane |
| − | ** | + | **:: far-clipping plane |
| − | ** | + | **:: field of view angle |
| − | ** | + | **:: aspect ratio |
**: 6 planes | **: 6 planes | ||
| − | ** | + | **:: near and far planes |
| − | ** | + | **:: left and right planes |
| − | ** | + | **:: top and bottom planes |
| − | ** Bounded Volume | + | **: coding |
| − | * | + | **:: constructor |
| − | * | + | **:: ViewingFrustum::contains() |
| − | * | + | * Finite Size of Objects |
| + | *: Expansion of the Viewing Frustum | ||
| + | *: Bounded Volume | ||
| + | *:: BoundedVolume : Frame | ||
| + | *:: BoundedVolume::setRadius() | ||
| + | *:: BoundedVolume::getRadius() | ||
=== To Do === | === To Do === | ||
| Line 52: | Line 62: | ||
=== This Week === | === This Week === | ||
* Collision Detection | * Collision Detection | ||
| + | *: types of colliders | ||
| + | *:: spheres | ||
| + | *:: planes | ||
| + | *:: axis-aligned bounding boxes | ||
| + | *:: oriented bounding boxes | ||
* Comprehensive Camerawork | * Comprehensive Camerawork | ||
| − | * Billboards | + | *: rotation about an axis |
| − | * Index Buffers | + | *: order of rotation matters |
| + | *: Euler angles | ||
| + | *: gimble lock | ||
| + | *:: quaternions | ||
| + | *:: geometric algebra (more abstract) | ||
| + | * Billboards | ||
| + | *: definition, purpose of a billboard | ||
| + | *: types of billboards | ||
| + | * SkyBox | ||
| + | *: definition of a skybox | ||
| + | *: other forms | ||
| + | * Index Buffers | ||
| + | *: amount of storage needed for vertex data | ||
| + | *: duplication of vertex data | ||
| + | *: indexing | ||
| + | *: indexed primitives | ||
| + | * Meshes | ||
| + | *: Stock Objects | ||
| + | *:: Sphere | ||
| + | *:: Cylinder | ||
| + | *:: Torus | ||
| + | *:: Utah Teapot | ||
| + | *: Simple Mesh COM object | ||
| + | *:: What is a mesh? | ||
| + | *:: Create a Mesh | ||
| + | *:: DrawSubset | ||
| + | *:: FVF settings | ||
=== To Do === | === To Do === | ||
| − | * Form Teams, Identify Members ( | + | * Form Teams, Identify Members (2-5 members) and add your team and members to [[GAM670/DPS905 Teams 20111 | Teams 20111]] ''' Before Thursday 20th'''. |
* Confirm your name and information at [[GAM670/DPS905Student List 20111 | Student List 20111]] | * Confirm your name and information at [[GAM670/DPS905Student List 20111 | Student List 20111]] | ||
| + | |||
=== Resources === | === Resources === | ||
| − | |||
== Week 3 - Jan 23 == | == Week 3 - Jan 23 == | ||
| Line 66: | Line 107: | ||
=== To Do === | === To Do === | ||
=== Resources === | === Resources === | ||
| − | + | * [http://www.microsoft.com/downloads/en/details.aspx?FamilyID=3021d52b-514e-41d3-ad02-438a3ba730ba DirectX SDK June 2010] | |
== Week 4 - Jan 30 == | == Week 4 - Jan 30 == | ||
=== This Week === | === This Week === | ||
| + | * [http://msdn.microsoft.com/en-us/library/bb147178%28v=VS.85%29.aspx Mathematics of Lighting] | ||
| + | * Vertex Shaders | ||
| + | * Lighting in Vertex Shaders | ||
| + | ** Notation | ||
| + | **: G<sub>a</sub> - global ambient color | ||
| + | **: C<sub>a</sub> - material ambient color | ||
| + | **: C<sub>d</sub> - material diffuse color | ||
| + | **: C<sub>s</sub> - material specular color | ||
| + | **: L<sub>a<sub>i</sub></sub> - ambient color of light i | ||
| + | **: L<sub>d<sub>i</sub></sub> - diffuse color of light i | ||
| + | **: L<sub>s<sub>i</sub></sub> - specular color of light i | ||
| + | **: L<sub>dir<sub>i</sub></sub> - direction vector of light i | ||
| + | **: N - normal to the surface at the vertex | ||
| + | *** [http://msdn.microsoft.com/en-us/library/bb172279%28v=VS.85%29.aspx Attenuation and Spotlight Factors] | ||
| + | **** Atten<sub>i</sub> - attenuation of light i | ||
| + | ***: d<sub>i</sub> - distance from light i | ||
| + | ***:: d<sub>i</sub> = |L<sub>dir<sub>i</sub></sub>| | ||
| + | ***: a<sub>0</sub> - constant attenuation factor | ||
| + | ***: a<sub>1</sub> - linear attenuation factor | ||
| + | ***: a<sub>2</sub> - quadratic attenuation factor | ||
| + | ***: Atten<sub>i</sub> = 1/(a<sub>0</sub> + a<sub>1</sub> d<sub>i</sub> + a<sub>2</sub> d<sub>i</sub><sup>2</sup>) | ||
| + | ***: Atten<sub>i</sub> = [0, 1] | ||
| + | **** Spot<sub>i</sub> - spot factor of light i | ||
| + | ***: Spot<sub>i</sub> = {[r<sub>i</sub> - cos(phi<sub>i</sub>/2)]/[cos(theta<sub>i</sub>/2) - cos(phi<sub>i</sub>/2)]}<sup>f<sub>i</sub></sup> | ||
| + | ***: r<sub>i</sub> - cosine of angle from axis of spotlight<sub>i</sub> | ||
| + | ***:: r<sub>i</sub> = norm(- light direction in camera space) . norm(L<sub>dir<sub>i</sub></sub>) | ||
| + | ***: phi<sub>i</sub> - penumbra (exterior cone) angle of spotlight<sub>i</sub> | ||
| + | ***: theta<sub>i</sub> - umbra (interior cone) angle of spotlight<sub>i</sub> | ||
| + | ***: f<sub>i</sub> - falloff factor of spotlight<sub>i</sub> | ||
| + | ** [http://en.wikipedia.org/wiki/Blinn%E2%80%93Phong_shading_model Blinn-Phong and Phong] | ||
| + | **: V - viewpoint vector | ||
| + | **:: V = norm(Camera<sub>position</sub> - Vertex<sub>position</sub>) | ||
| + | ** Phong - account accurately for position of viewer | ||
| + | **: Specular reflectance = (R<sub>i</sub> . V)<sup>p<sub>i</sub></sup> | ||
| + | **: R<sub>i</sub> - reflection vector | ||
| + | **:: R<sub>i</sub> = 2 * (N . L<sub>dir<sub>i</sub></sub>) N - L<sub>dir<sub>i</sub></sub> | ||
| + | **: p<sub>i</sub> - true specular power of light i | ||
| + | **: | ||
| + | ** Blinn-Phong - use halfway vector instead of reflection vector - adjust power to compensate | ||
| + | **: Specular reflectance = (N . H<sub>i</sub>)<sup>p'<sub>i</sub></sup> | ||
| + | **: H<sub>i</sub> - halfway vector | ||
| + | **:: H<sub>i</sub> = norm(V + L<sub>dir<sub>i</sub></sub>) | ||
| + | **:: H<sub>i</sub> = norm([0,0,1] + L<sub>dir<sub>i</sub></sub>) - less computationally intensive - assumes that camera is at infinity along z axis | ||
| + | **: p'<sub>i</sub> - adjusted specular power of light i | ||
| + | **: | ||
| + | ** [http://msdn.microsoft.com/en-us/library/bb172256%28v=VS.85%29.aspx Ambient] | ||
| + | **: C<sub>a</sub> * ( G<sub>a</sub> + sum [L<sub>a<sub>i</sub></sub> * Atten<sub>i</sub> * Spot<sub>i</sub>] ) | ||
| + | ** [http://msdn.microsoft.com/en-us/library/bb219656%28v=VS.85%29.aspx Diffuse] | ||
| + | **: C<sub>d</sub> * sum [ L<sub>d<sub>i</sub></sub> * (N . L<sub>dir<sub>i</sub></sub>) * Atten<sub>i</sub> * Spot<sub>i</sub> ] | ||
| + | ** [http://msdn.microsoft.com/en-us/library/bb147399%28VS.85%29.aspx Specular] | ||
| + | **: C<sub>s</sub> * sum [ L<sub>s<sub>i</sub></sub> * (N . H<sub>i</sub>)<sup>p'<sub>i</sub></sup> * Atten<sub>i</sub> * Spot<sub>i</sub> ] - Blinn-Phong | ||
| + | **: C<sub>s</sub> * sum [ L<sub>s<sub>i</sub></sub> * (R<sub>i</sub> . V)<sup>p<sub>i</sub></sup> * Atten<sub>i</sub> * Spot<sub>i</sub> ] - Phong | ||
| + | ** [http://msdn.microsoft.com/en-us/library/ff471376%28v=vs.85%29.aspx HLSL Intrinsic Functions] | ||
| + | *** [http://msdn.microsoft.com/en-us/library/bb509630%28v=vs.85%29.aspx normalize()] - normalize a vector | ||
| + | *** [http://msdn.microsoft.com/en-us/library/bb509594%28v=vs.85%29.aspx dot(,)] - dot product of two vectors of any size | ||
| + | *** [http://msdn.microsoft.com/en-us/library/bb509617%28v=vs.85%29.aspx length()] - length of a vector | ||
| + | *** [http://msdn.microsoft.com/en-us/library/bb509645%28v=vs.85%29.aspx saturate()] - clamp scalar, vector, or matrix to [0, 1] | ||
| + | |||
=== To Do === | === To Do === | ||
| + | * reorganize framework code so that vertex shader receives product of world, view, and projection matrices | ||
| + | ** store viewProjection matrix as an instance variable in Display | ||
| + | ** add viewProjection query to Display to extract product of view and projection matrices | ||
| + | ** retrieve viewProjection in *::draw() method | ||
| + | ** pre-multiply viewProjection by world to obtain composite matrix to pass to vertex shader | ||
| + | ** add composite matrix to the constant table in the vertex shader | ||
| + | * reorganize framework code to minimize duplication of heading normalization | ||
| + | ** perform normalization of heading in Display::beginDraw() | ||
| + | |||
=== Resources === | === Resources === | ||
| − | |||
== Week 5 - Feb 6 == | == Week 5 - Feb 6 == | ||
Latest revision as of 08:18, 3 February 2011
GAM670/DPS905 | Weekly Schedule | Student List | Project Requirements | Teams and their Projects | Student Resources
Contents
GAM670/DPS905 -- Weekly Schedule 20111
Week 1 - Jan 9
This Week
- Suggested Enhancements
- Assignment Discussion
- Review of base code
- camera, sound, and light attachments now made at the Frame class
- textures still attach at the object level
- texture connection uncoupled from drawing
- time tracking now within HUD class completely
- introduction of relative reference frames
- very simple collision detection
- Relative Reference Frames
- Recursive calls
- Vector Frame::position()
- Matrix Frame::rotation()
- Matrix Frame::world()
- Detaching from and attaching to a parent frame
- Frame::attachTo()
- Recursive calls
- Visibility Determination
- Plane
- normal + constant - examples
- equation of a plane: dot(n, x) + D = 0
- positive side of a plane dot(n, x) + D > 0
- test a point for presence within a set of planes
- normal calculations - general rotation matrix - vector and angle
- ViewingFrustum
- parameters
- near-clipping plane
- far-clipping plane
- field of view angle
- aspect ratio
- 6 planes
- near and far planes
- left and right planes
- top and bottom planes
- coding
- constructor
- ViewingFrustum::contains()
- parameters
- Plane
- Finite Size of Objects
- Expansion of the Viewing Frustum
- Bounded Volume
- BoundedVolume : Frame
- BoundedVolume::setRadius()
- BoundedVolume::getRadius()
To Do
Resources
Week 2 - Jan 16
This Week
- Collision Detection
- types of colliders
- spheres
- planes
- axis-aligned bounding boxes
- oriented bounding boxes
- types of colliders
- Comprehensive Camerawork
- rotation about an axis
- order of rotation matters
- Euler angles
- gimble lock
- quaternions
- geometric algebra (more abstract)
- Billboards
- definition, purpose of a billboard
- types of billboards
- SkyBox
- definition of a skybox
- other forms
- Index Buffers
- amount of storage needed for vertex data
- duplication of vertex data
- indexing
- indexed primitives
- Meshes
- Stock Objects
- Sphere
- Cylinder
- Torus
- Utah Teapot
- Simple Mesh COM object
- What is a mesh?
- Create a Mesh
- DrawSubset
- FVF settings
- Stock Objects
To Do
- Form Teams, Identify Members (2-5 members) and add your team and members to Teams 20111 Before Thursday 20th.
- Confirm your name and information at Student List 20111
Resources
Week 3 - Jan 23
This Week
To Do
Resources
Week 4 - Jan 30
This Week
- Mathematics of Lighting
- Vertex Shaders
- Lighting in Vertex Shaders
- Notation
- Ga - global ambient color
- Ca - material ambient color
- Cd - material diffuse color
- Cs - material specular color
- Lai - ambient color of light i
- Ldi - diffuse color of light i
- Lsi - specular color of light i
- Ldiri - direction vector of light i
- N - normal to the surface at the vertex
- Attenuation and Spotlight Factors
- Atteni - attenuation of light i
- di - distance from light i
- di = |Ldiri|
- a0 - constant attenuation factor
- a1 - linear attenuation factor
- a2 - quadratic attenuation factor
- Atteni = 1/(a0 + a1 di + a2 di2)
- Atteni = [0, 1]
- Spoti - spot factor of light i
- Spoti = {[ri - cos(phii/2)]/[cos(thetai/2) - cos(phii/2)]}fi
- ri - cosine of angle from axis of spotlighti
- ri = norm(- light direction in camera space) . norm(Ldiri)
- phii - penumbra (exterior cone) angle of spotlighti
- thetai - umbra (interior cone) angle of spotlighti
- fi - falloff factor of spotlighti
- Blinn-Phong and Phong
- V - viewpoint vector
- V = norm(Cameraposition - Vertexposition)
- V - viewpoint vector
- Phong - account accurately for position of viewer
- Specular reflectance = (Ri . V)pi
- Ri - reflection vector
- Ri = 2 * (N . Ldiri) N - Ldiri
- pi - true specular power of light i
- Blinn-Phong - use halfway vector instead of reflection vector - adjust power to compensate
- Specular reflectance = (N . Hi)p'i
- Hi - halfway vector
- Hi = norm(V + Ldiri)
- Hi = norm([0,0,1] + Ldiri) - less computationally intensive - assumes that camera is at infinity along z axis
- p'i - adjusted specular power of light i
- Ambient
- Ca * ( Ga + sum [Lai * Atteni * Spoti] )
- Diffuse
- Cd * sum [ Ldi * (N . Ldiri) * Atteni * Spoti ]
- Specular
- Cs * sum [ Lsi * (N . Hi)p'i * Atteni * Spoti ] - Blinn-Phong
- Cs * sum [ Lsi * (Ri . V)pi * Atteni * Spoti ] - Phong
- HLSL Intrinsic Functions
- normalize() - normalize a vector
- dot(,) - dot product of two vectors of any size
- length() - length of a vector
- saturate() - clamp scalar, vector, or matrix to [0, 1]
- Notation
To Do
- reorganize framework code so that vertex shader receives product of world, view, and projection matrices
- store viewProjection matrix as an instance variable in Display
- add viewProjection query to Display to extract product of view and projection matrices
- retrieve viewProjection in *::draw() method
- pre-multiply viewProjection by world to obtain composite matrix to pass to vertex shader
- add composite matrix to the constant table in the vertex shader
- reorganize framework code to minimize duplication of heading normalization
- perform normalization of heading in Display::beginDraw()
