Manual de Apoio 2010

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gl. glPixelZoom (( float ) iViewport . get (2) / ( float ) img . getWidth () ,( float ) iViewport . get (3) / ( float ) img . getHeight ());//switch ( renderMode ) {case Sharpen : // Sharpengl. glConvolutionFilter2D (GL2 . GL_CONVOLUTION_2D , GL2 . GL_RGB , 3, 3,GL2 . GL_LUMINANCE , GL2 . GL_FLOAT , mSharpen);gl. glEnable ( GL2 . GL_CONVOLUTION_2D );break ;case Emboss : // Embossgl. glConvolutionFilter2D (GL2 . GL_CONVOLUTION_2D , GL2 . GL_RGB , 3, 3,GL2 . GL_LUMINANCE , GL2 . GL_FLOAT , mEmboss );gl. glEnable ( GL2 . GL_CONVOLUTION_2D );break ;case Invert : // Invertfor ( int i = 0; i < 255; i ++) {invertTable . put (i * 3 + 0, ( byte ) (255 - i ));invertTable . put (i * 3 + 1, ( byte ) (255 - i ));invertTable . put (i * 3 + 2, ( byte ) (255 - i ));}gl. glColorTable (GL2 . GL_COLOR_TABLE , GL2 . GL_RGB , 256 , GL2 . GL_RGB ,GL2 . GL_UNSIGNED_BYTE , invertTable);gl. glEnable ( GL2 . GL_COLOR_TABLE );break ;case Brighten : // Brighten// Mudar para o matrix mode Colorgl. glMatrixMode ( GL2 . GL_COLOR );// Aumentar todas as cores em 50%gl. glScalef (2f, 2f, 2f);// Voltar ao ModelViewgl. glMatrixMode ( GL2 . GL_MODELVIEW );break ;case GaussianBlur : // Gaussian Blurgl. glConvolutionFilter2D (GL2 . GL_CONVOLUTION_2D , GL2 . GL_RGB , 3, 3,GL2 . GL_LUMINANCE , GL2 . GL_FLOAT , mGaussian );gl. glEnable ( GL2 . GL_CONVOLUTION_2D );break ;}case Normal : // Normaldefault :break ;// Desenhar a Imagem com as alteracoes efectuadas (ou nao )gl. glDrawPixels (img . getWidth () , img . getHeight () ,img . getGLFormat () ,GL2 . GL_UNSIGNED_BYTE , bb );121
Reverter as ( possiveis ) transformacoes efectuadas// na matriz Colorgl. glMatrixMode ( GL2 . GL_COLOR );gl. glLoadIdentity ();// Voltar ao ModelViewgl. glMatrixMode ( GL2 . GL_MODELVIEW );// Desactivar as alteracoesgl. glDisable ( GL2 . GL_CONVOLUTION_2D );gl. glDisable ( GL2 . GL_COLOR_TABLE );}@Overridepublic void reshape ( GLAutoDrawable drawable , int x, int y, int width , int height ) {GL2 gl = drawable . getGL (). getGL2 ();gl. glViewport (0 , 0, width , height );gl. glMatrixMode ( GL2 . GL_PROJECTION );gl. glLoadIdentity ();glu . gluOrtho2D (0 , width , 0, height );}gl. glMatrixMode ( GL2 . GL_MODELVIEW );gl. glLoadIdentity ();}C.3 Pyramid.javapackage pt.ipb . esact .cg. examples ;import java . awt . BorderLayout ;import java . awt . Container ;import java .io. IOException ;import java .io. InputStream ;import java . nio . ByteBuffer ;import javax . media . opengl . GL2 ;import javax . media . opengl . GLAutoDrawable ;import javax . media . opengl . GLEventListener ;import javax . media . opengl . awt . GLCanvas ;import javax . media . opengl . glu . GLU ;import javax . swing . JFrame ;import pt.ipb . esact .cg.gl. CGEngine ;import pt.ipb . esact .cg.gl. GLVector ;import pt.ipb . esact .cg.gl. tools . GlTools ;import pt.ipb . esact .cg.gl. tools . GlUtil ;import com . jogamp . opengl . util . FPSAnimator ;import com . jogamp . opengl . util . texture . spi . TGAImage ;@SuppressWarnings (" serial ")public class Pyramid extends JFrame implements GLEventListener {private GLU glu = new GLU ();private GLCanvas canvas ;FPSAnimator animator ;122
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Computação GráficaManual de Apoi
Page 3 and 4:
4.3.5 Regras na Criação de Políg
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ConvençõesNa medida dos possívei
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1.2 Efeitos 3DUma palavra a ter em
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Figura 1.3: Duas perspectivas difer
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1.3.5 Viewport TransformationsNo fi
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Figura 2.2: Duas zonas de clipping
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Figura 2.7: O clipping volume de um
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Tipo Interno OpenGL Tipo em C Sufix
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O passo final consiste no mapeament
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Figura 3.7: Duas Esferasgl. glTrans
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Figura 3.11: FrustrumA definição
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Capítulo 4Primitivas Geométricas
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Figura 4.3: Explicação da espiral
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Figura 4.5: Desenho com GL LINESFig
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float y, curwidth = widths [0];gl.
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gl. glVertex2f (0f, 0f); // V 0gl.
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4.3.2 Tiras de Quadrados:GL QUAD ST
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4.3.5 Regras na Criação de Políg
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GL2 gl = drawable . getGL (). getGL
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A luz vista como uma partículaA co
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5.2 Utilização de Cores no OpenGL
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5.3 Cores no Mundo RealO shading do
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Ao desenhar objectos, o OpenGL deci
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Figura 5.15: Polígono após defini
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Vectores Normais às SuperfíciesO
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Figura 5.21: Um vector normal não
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classe GLVector fornece o método t
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(a) Normais perpendiculares a cada
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Capítulo 6Cores e Materiais (Conti
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Desenhar um Torus Verdegl. glColor4
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Da mesma forma que deifinimos a fun
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Figura 6.6: NevoeiroA configuraçã
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OperationGL ACCUMGL LOADGL MULTGL A
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Capítulo 7Imagens no OpenGL7.1 Bit
Page 71 and 72: transformados em fragmentos (pixel)
Page 73 and 74: Figura 7.4: Utilização de glDrawP
Page 75 and 76: 7.4 Outras Operações com ImagensP
Page 77 and 78: EmbossA matriz utilizada para o efe
Page 79 and 80: Capítulo 8Mapeamento de TexturasNa
Page 81 and 82: Figura 8.2: Pipeline - Carregamento
Page 83 and 84: (a) Textura bi-dimensional aplicada
Page 85 and 86: 8.4 Texture EnvironmentNo exemplo P
Page 87 and 88: 8.5.2 Texture WrapNormalmente espec
Page 89 and 90: imagem da textura. A biblioteca GLU
Page 91 and 92: Capítulo 9Mapeamento de Texturas:
Page 93 and 94: Fazer o bind do estado da textura a
Page 95 and 96: Onde x, y, z e w são as coordenada
Page 97 and 98: Figura 9.6: Sphere MapFigura 9.7: C
Page 99 and 100: O valor utilizado no primeiro argum
Page 101 and 102: Capítulo 10Curvas e Superfícies10
Page 103 and 104: 10.1.2 Desenho de Superfícies Quá
Page 105 and 106: (a) inner=0(b) inner=0.25Figura 10.
Page 107 and 108: A curva da Figura 10.10b é uma cur
Page 109 and 110: Figura 10.12: Curva de Bézier 2D10
Page 111 and 112: Figura 10.14: Superfície de Bézie
Page 113 and 114: Desenhar Geometria (3)gl. glEndList
Page 115 and 116: Apêndice BTabelasB.1 Formato de Im
Page 117 and 118: Apêndice CCódigo FonteC.1 Example
Page 119 and 120: gl. glPushMatrix ();gl. glLightfv (
Page 121: public void init ( GLAutoDrawable d
Page 125 and 126: Activar as Luzesgl. glEnable ( GL2
Page 127 and 128: gl. glTexCoord2f (0f, 0f);cBackRigh
Page 129 and 130: @Overridepublic void dispose ( GLAu
Page 131 and 132: }}return img ;@Overridepublic void
Page 133 and 134: private float fLowLight [] = { 0.25
Page 135 and 136: Carregar e Ler a imagem para a noss
Page 137 and 138: gl. glBindTexture ( GL2 . GL_TEXTUR
Page 139 and 140: }private void setupLight ( GL2 gl)
Page 141 and 142: public class Bezier2D extends JFram
Page 143 and 144: import pt.ipb . esact .cg.gl. GLVec
Page 145 and 146: }glu . gluPerspective (100f, fAspec
Page 147 and 148: ctrlPoints . add (4f, 0f, 0f); // E
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Manual de Apoio 2010

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