Task 2
- 2. API Application programming interface is basically the building block for a programmer to put together so the better the API is the easier for the programmer to put the pieces together a form of API would Direct 3D which is developed by Microsoft which guides programmers into making 3D programs. http://upload.wikimedia.org/wikipedia/commons/0/0f/2_duplo_lego_bricks.jpg
- 3. DIRECT 3D Direct 3D it contains commands for 3d rendering and also is responsible for 2D graphics. Microsoft who are the creators of Direct 3D continuously update to support the newer 3D graphics tech, this offers full vertex software emulations, but does not enable pixel software emulation although it will compute and render the polygons and textures of the 3D models. http://blogs.unity3d.com/wp-content/uploads/2011/04/bootcamp-dx11.jpg
- 4. OPENGL Open GL is a evolving API as updates are regularly released which extends the API so support multiple new features. This is planned out between the group members which includes the graphics cards manufacturers and the operating system designers this involves Mozilla and Google. https://jeremy.visser.name/wordpress/wp-content/uploads/2008/12/openglvirtualbox.png
- 5. GRAPHICS PIPELINE Graphics pipeline is basically mathematical information which is stored in objects which is then transferred into making images and videos. It is used to produce 2D raster representation of a 3D scene this is basically turning 3D model into what the computer displays. http://i.msdn.microsoft.com/dynimg/IC340510.jpg
- 6. 3D GEOMETRIC PRIMITIVES 3D geometric shapes consists of spheres, cubes, toroids, cylinders, pyramids. These are considered to be the building blocks for various other shapes and forms, this also consists of more complex shapes like for example a teapot which is a primitive by 3D Studio Max http://www.webreference.com/3d/cararra/images/fig1_12.jpg
- 7. MODELLING AND TRANSFORM These are basically the coordinates which are then transformed to the 3D worlds coordinates system. This help when manuovering 3D shapes around a 3D software like For example unity when you move 3d objects around. http://3dthebasics.blogspot.co.uk/search/label/HA4%20Task%202
- 8. CAMERA TRANSFORMATION Transforms 3D world coordinates into 3D camera coordinates with camera as the origin which is used effectively in Unity as you can position the camera a different angles and positions. http://3dthebasics.blogspot.co.uk/search/label/HA4%20Task%202
- 9. LIGHTING Illuminate areas following to the reflectance and lighting for example If a cube is a clear white colour but in a dark room the camera sees it as a black object. In this stage the effect of lighting and reflection are measured.
- 10. PROJECTION TRANSFORMATION Transform 3D world coordinates into the 2D view of the camera, the object the camera is centered on would be right in the centre of the camera, this would result in objects in the distance of the camera seem smaller. This is achieved by the X and Y coordinates. http://www.cs.sun.ac.za/~lvzijl/courses/rw778/grafika/OpenGLtuts/Big/Projectio n%20Transformations_files/graphicsnotes039.gif
- 11. CLIPPING In 2D graphics for example, if the user of an image editing program is modifying an image and has "zoomed in" the view to display only the top half of the image, there is no need for the program to spend any CPU time doing any of the calculations or memory moves needed to display the bottom half. By clipping the bottom half of the image and avoiding these calculations, the program runs faster. http://www.cc.gatech.edu/grads/h/Hao-wei.Hsieh/Haowei.Hsieh/pic6.gif
- 12. SCAN CONVERSION OR RASTERIZATION Scan conversion or scan rate converting is a video processing technique for changing the vertical / horizontal scan frequency of video signal for different purposes and applications. Rasterization (or rasterization) is the task of taking an image described in a vector graphics format (shapes) and converting it into a raster image (pixels or dots) for output on a video display or printer, or for storage in a bitmap file format. http://www.cs.utah.edu/~jstratto/state_of_ray_tracing/teas_edited-1.jpg
- 13. TEXTURING, FRAGMENT SHADING At this part of the pipeline pre pixels are assigned a colour based values extracted from the vertices during rasterization.
- 14. DISPLAY The final colored pixels can then be shown on a monitor or any other display