The first test in this course will take place on Monday, February 16. It will cover everything that we have done since the beginning of the term, including the first four labs. The readings from the OpenGL Programming Guide include Chapter 1; Chapter 2, pages 27 to 56; Chapter 4; and Chapter 6, pages 225 to 229, 232 to 233, and 241 to 245.
Important terms and ideas include:
Computer graphics Computer animation "Painting" vs. "Drawing" GIMP OpenGL Vertex Vertex colors in OpenGL Polygon Convex polygon OpenGL as state machine Drawing with OpenGL GLUT GLUT "callback" functions GLUT display function 3D graphics 3D coordinates (x,y,z) The z axis Geometric modeling Transformations Moving Scaling Rotation Lighting in 3D Material properties Textures Camera/viewpoint/projection Rendering Blender Color models Direct color models RGB, RGBA, CMY, HSV Color gamut Indexed color models Palette Graphics file formats GIF, PNG, JPG Lossless vs. lossy compression The alpha channel Color channels as grayscale images Selections and Masks Alpha blending in OpenGL Anti-aliasing Techniques from the drawing program
glVertex3f(x,y,z) glVertex2f(x,y) glColor3f(r,g,b) glColor4f(r,g,b,a) glClearColor(r,g,b,a) glClear(GL_COLOR_BUFFER_BIT) glBegin(GL_POLYGON) glBegin(GL_LINES) glBegin(GL_LINE_LOOP) glBegin(GL_LINE_STRIP) glBegin(GL_POINTS) glEnd() glViewport(x,y,width,height) gluOrtho2D(xmin, xmax, ymin, ymax) glFlush(); glLineWidth(w) glLineStipple(rep,pattern) glEnable(GL_LINE_STIPPLE) glDisable(GL_LINE_STIPPLE) glEnable(GL_BLEND) glDisable(GL_BLEND)
Brush tool Gradient (blend) tool Bucket (fill) tool Levels dialog Gradients Opacity / Transparency Selections Partially selected pixels Bezier paths Quick Mask Layers Image composition