Pro OpenGL ES for iOS

CHAPTER 4: Turning On the Lights (^117) Figure 4-15. For a specular reflection, the incoming ray is scattered but only around th ...

118 CHAPTER 4: Turning On the Lights^ Attenuation Now back to the three kinds of attenuation listed earlier: constant, linear, a ...

CHAPTER 4: Turning On the Lights (^119) When calculated, these values act individually on each of the R, G, and B components of ...

120 CHAPTER 4: Turning On the Lights^ GLfloat green[]={0.0,1.0,0.0,0.0}; GLfloat dimgreen[]={0.0,.5,0.0,0.0}; GLfloat blue[]={0. ...

CHAPTER 4: Turning On the Lights (^121) Figure 4-16. Three lights, one main and two fill. The left-hand image has a low-resoluti ...

122 CHAPTER 4: Turning On the Lights^ Continued Name Purpose glNormal (^) Assigns a single normal to an array of faces glNormalP ...

CHAPTER 4: Turning On the Lights (^123) Next, a second object, in this case, our sun, needs to be generated, sized, and placed. ...

124 CHAPTER 4: Turning On the Lights^ GLfloat dimcyan[]={0.0,.5,.5,1.0}; //Lights go here. glLightfv(SS_SUNLIGHT,GL_POSITION,sun ...

CHAPTER 4: Turning On the Lights (^125) glPushMatrix(); //4 glTranslatef(-m_Eyeposition[X_VALUE],-m_Eyeposition[Y_VALUE], //5 -m ...

126 CHAPTER 4: Turning On the Lights^ Here’s what’s going on: „ Line 1 creates a lighter shade of yellow. This just colors the s ...

CHAPTER 4: Turning On the Lights (^127) „ The emissive material attribute is switched off, here in line 15, followed by another ...

128 CHAPTER 4: Turning On the Lights^ To Planet.m add the following initialization code at the very end of the init() method: m_ ...

CHAPTER 4: Turning On the Lights (^129) And while you’re at it, let’s turn down the gray in the background. It’s supposed to be ...

130 CHAPTER 4: Turning On the Lights^ The first is called the painter’s algorithm. This means simply to draw the furthest object ...

CHAPTER 4: Turning On the Lights (^131) Figure 4-18. Using the z-buffer Summary This chapter covered the various approaches to l ...

Chapter 5 Textures The true worth of a man is not to be found in man himself but in the colours and textures that come alive in ...

134 CHAPTER 5: Textures^ The Language of Texturing Say you wanted to create an airstrip in a game you’re working on. How would y ...

CHAPTER 5: Textures (^135) Procedural textures are very powerful because they can produce an infinite variety of scalable patter ...

136 CHAPTER 5: Textures^ Figure 5-3. All of the possible settings used to produce the gold ore texture in Figure 5-2. Procedural ...

CHAPTER 5: Textures (^137) scene, but this time with wood textures, mahogany for the chalice, and alder for the cone, while the ...