Thiết kế flash - 3D modeling and display

3D Modeling and Display3D Model TypesWireframeSurfaceSolidParametricWireframe Models3D model created with ordinary lines, circles, arcs, etc., to represent edgesOnly vertex and edge data is storedNo shading, hidden line removalSurface ModelsModel with surface objectsMeshes frequently used to represent surfacesSurface, edge, & vertex information storedShading, hidden line removalUseful for modeling shapes with complex curvature (e.g., hull forms, airfoils, automobiles)(10,100,100)(0,0,0)XZSurface Model- 6 meshed surfacesSolid ModelsModel with solid objects (e.g., primitives, sweeps) Database contains information about vertices, edges, surfaces, and the space enclosed by the surfacesMass and material propertiesInterference checkingShading and hidden line removal(100,100,100)(0,0,0)XZSolid Model- 1 primitive3D DisplayWireframeHidden line / hidden surfaceShadedRenderedNOTE:Display refers to the way that 3D objects appear on the display device (i.e., the computer monitor)Wireframe DisplayModel edges and contours are visible (Model may be wireframe, surface, solid or parametric)Simpler and faster than shaded displayTrade-off between complexity and speed Hidden Line/Surface DisplayWithout hidden lines removedWith hidden lines removedHidden line/surface removal - class of algorithms used to determine model edges, surfaces, or volumes that are visible or invisible from a particular viewpointwireframewireframesurfacesurfacesolidsolidShaded DisplayDisplay technique that hides hidden lines and applies flat colors to visible surfacesRendered DisplaySingle, shaded view of a 3D model to which colors, materials, textures and lighting have been added3D Modeling and DisplayAkahaw Huwa!