Focus On 3D Terrain Programming phần 3 pot

... shown in Figure 3. 3. You need to know how to generate a really cool texture like the one shown here. Read on! 42 3. Texturing Terrain Figure 3. 2 Screenshot from demo3_1. Figure 3. 3 The grass texture ... 2001. http://www.flipcode.com/tutorials/tut_terrtex.shtml. 3 Lander, Jeff. Terrain Texturing.” Delphi3D-Rapid OpenGL Development. 2002. http://www.delphi3d.net/articles/ viewarti...

Ngày tải lên: 12/08/2014, 17:20

... allocation/freeing functions are the high- level abstractions that call on the add/remove triangle functions. Let’s focus on the low-level manipulation functions because the high-level ones are ... the information you need for a new diamond child. This function we are going to discuss is the basis for step 3, so you’d better pay attention! In the diamond child creation function, the si...

Ngày tải lên: 12/08/2014, 17:20

... enter the hardcore terrain programming section, which contains all sorts of information on advanced terrain algorithms. References 1 Van Noland, Charlie. “Slope Lighting Terrain. ” 2002. http://www.gamedev.net/reference/articles/article1 436 .asp. 72 4. ... lightmap onto terrain, but the more advanced lightmapping concepts concentrate on the genera- tion of a lightmap. (I’ll be sh...

Ngày tải lên: 12/08/2014, 17:20

... equation in mind, check out Figure 5. 13 to see what vari- ables we are going to plug into the equation. 90 5. Geomipmapping for the CLOD Impaired Figure 5.12 The 3D distance formula. Figure 5. 13 ... calculation functionality to the CCAMERA class based on some information in Mark Morley’s article “Frustum Culling in OpenGL,” which I consider the best frustum culling tutorial I’ve seen...

Ngày tải lên: 12/08/2014, 17:20

... the tessellation of your quadtree implementation. In the previous section, we talked about general tessellation. Although general tessellation works decently, a quadtree implementation is capable ... data structure is good for a 3D terrain engine. Well, what you need to remember is that terrain is largely a 2D object. Notice how the heightmaps that we load are not 3D data sets; rather...

Ngày tải lên: 12/08/2014, 17:20

... implementation, the update/shutdown functions are going to be almost laughably small, consisting of one line each. To stay consistent with previous chapters, let’s start with the initialization function ... the ‘and operation’ on uiS and 0x007FFFFF. The ‘and operation’ is done to mask out any bits that might intrude upon the exponent bits. In the IEEE Floating point standard, the 31 st bi...

Ngày tải lên: 12/08/2014, 17:20

... live. ■ Current Position. This is the particle’s current position in 2D /3D space. 1 93 Particle Engines and Their Outdoor Applications Figure 8.24 Visual explanation of the relationships in a particle ... an interpolation bias. This function is called CosineInterpolation, and we’ll use it in conjunction with the RangedSmoothRandom function to form the basis of our noise generation. Now fo...

Ngày tải lên: 12/08/2014, 17:20

... 139 –141 merge function, 159 merge queue, 132 – 133 node improvements, 133 – 134 priority update function, 158 Render function, 138 – 139 , 144, 155–156, 162–1 63 RenderChild function, 139 –142, 144 shutdown ... explanation, 34 35 2D explanation, 35 37 defined, 33 drawbacks, 33 military, terrain application, 5 mipmapping, geomipmapping similarities, 79–80 N neighbor nodes, binary...

Ngày tải lên: 12/08/2014, 17:20

... like `` z=a; ''isalwaysterminatedbyasemicolon. 3. 3Else-If Theconstruction if(expression) statement elseif(expression) statement elseif(expression) statement elseif(expression) statement else statement occurs ... operands, thatis, char , short , int ,and long ,whethersignedorunsigned. & bitwiseAND...

Ngày tải lên: 06/08/2014, 09:20

... [2; 3] ; 32 >> shape(1).Size 33 ans = 34 3. 0000e+001 35 4.9500e+001 36 >> shape(1) = reset(shape(1)); 37 >> shape(1).Size 38 ans = 39 10 C911X_C004.fm Page 72 Friday, March 30 , ... type); 29 error(err_id, err_msg); 30 end 31 end 32 33 case '()' 34 this_subset = this(index(1).subs{:}); 35 if length(index) == 1 36 varargout = {this_s...

Ngày tải lên: 09/08/2014, 12:22