Foundations of 3D Graphics Programming - download pdf or read online

By J. Chen, E. Wegman

ISBN-10: 0387950494

ISBN-13: 9780387950495

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This subdivision process goes on depending on the value of the depth. Given a triangle with two vertices and the coordinate center, subdivideCircle() recursively subdivides the triangle depth times and draws 2depth triangles. java is shown in Fig. 7. The above method to draw a circle is quite cumbersome. We can draw a circle by just drawing a polygon that has many vertices around the circle. The reason we design and discuss the above method is that we will build other objects, such as cone and cylinder, on top of this method very easily.

Clipping algorithms for lines, polygons, and other 2D primitives have been developed. In addition to primitive 2D rectangular clipping, clipping algorithms have also been developed to cut models in other 2D shapes or 3D volumes. We will further discuss clipping against 3D volumes in Chapter 2. 4 Attributes and Antialiasing In general, any parameter that affects the way a primitive is to be displayed is referred to as an attribute parameter. ), and so forth. The display and the corresponding frame buffer are discrete.

My2dTranslatef(float x, float y) multiplies the current matrix on the matrix stack with the translation matrix T(x, y): // multiply the current matrix with a translation matrix public void my2dTranslatef(float x, float y) { 44 2 Transformation and Viewing float T[][] = new float[3][3]; my2dIdentity(T); T[0][2] = x; T[1][2] = y; my2dMultMatrix(T); } 4. cos(angle); my2dMultMatrix(R); } 5. 2 2D Transformation 45 6. my2dTransformf(float vertex[]; vertex1[]) multiplies the current matrix on the matrix stack with vertex, and save the result in vertex1.

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Foundations of 3D Graphics Programming by J. Chen, E. Wegman

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