Graphics Mid

Which of the following is the most commonly used boundary representation for a 3-dimensional graphics object?. Volume polygon. System polygon. Data polygon. Surface polygon.

The effect is like viewing the background through colored glass; the color of the glass adds a tint to the background color. This called …………. alpha blending. rasterization. transformation. painting.

What is OpenGL?. A programming language. An operating system. A graphics rendering API. A computer game.

Which programming language is commonly used for OpenGL programming?. Java. Python. C/C++. Ruby.

Which type of computer graphics stores images as a series of pixels?. Vector graphics. Raster graphics. 3D graphics. None of the above.

Which of the following is not a common way of representing colors in computer graphics?. RGB. CMYK. HSL. XYZ.

Which of the following is a common type of transformation represented by a matrix?. Translation. Scaling. Rotation. All of the above.

What is the function of the glClearColor() command?. To set the color of a point. To set the color of the background. To set the color of a line. To set the color of a polygon.

Which command is used to draw a point in OpenGL?. glDrawPoint(). glDrawLine(). glBegin(GL_POINTS) and glVertex2f(x,y). glBegin(GL_LINES) and glVertex2f(x,y).

Which command is used to draw a line in OpenGL?. glDrawPoint(). glDrawLine(). glBegin(GL_POINTS) and glVertex2f(x,y). glBegin(GL_LINES) and glVertex2f(x,y).

What is double buffering in OpenGL?. A technique used to prevent screen tearing. A technique used to increase the frame rate. A technique used to reduce memory usage. A technique used to increase the screen resolution.

Which command is used to swap the front and back buffers in OpenGL?. glSwapBuffers(). glFlush(). glClear(). glutSwapBuffers().

What is the purpose of the glMatrixMode() command?. To specify the current color. To specify the current matrix mode. To specify the current drawing mode. To specify the current texture mode.

Which of the following is NOT a valid matrix mode in OpenGL?. GL_MODELVIEW. GL_PROJECTION. GL_TEXTURE. GL_DRAW.

Which command is used to specify the size of the viewport in OpenGL?. glViewport(). glMatrixMode(). gluOrtho2D(). glutInitWindowSize().

Which of the following commands is used to initialize OpenGL?. glutInit(). glutDisplayFunc(). glutMainLoop(). All of the above.

Which of the following commands is used to register a display callback function in OpenGL?. glutInit(). glutDisplayFunc(). glutMainLoop(). glClearColor().

Which of the following commands is used to specify the projection matrix in OpenGL?. glMatrixMode(GL_MODELVIEW). glMatrixMode(GL_PROJECTION). glMatrixMode(GL_TEXTURE). glMatrixMode(GL_DRAW).

Which of the following commands is used to specify an orthographic projection in OpenGL?. glMatrixMode(GL_PROJECTION). gluOrtho2D(). glutInitWindowSize(). glutDisplayFunc().

Which of the following commands is used to specify the size of the window in pixels?. glutInitWindowSize(). glViewport(). glMatrixMode(GL_PROJECTION). gluOrtho2D().

Which of the following commands is used to set the position of the window on the screen ?. glutPositionWindow(). glutInitWindowPosition(). glViewport(). gluOrtho2D().

Which of the following commands is used to specify the color of a point in OpenGL?. glColor3f(). glVertex2f(). glBegin(). glEnd().

Which of the following commands is used to specify the coordinates of a vertex in OpenGL?. glColor3f(). glVertex2f(). glBegin(). glEnd().

Which of the following commands is used to draw a polygon in OpenGL?. glColor3f(). glVertex2f(). glBegin(). glEnd().

Which of the following commands is used to end the definition of a primitive in OpenGL?. glColor3f(). glVertex2f(). glBegin(). glEnd().

Which of the following commands is used to clear the color buffer in OpenGL?. glClear(). glutInit(). glutDisplayFunc(). glClearColor().

Which of the following commands is used to set the background color in OpenGL?. glClear(). glutInit(). glutDisplayFunc(). glClearColor().

** Which of the following commands is used to draw a line in OpenGL?. glColor3f(). glVertex2f(). glBegin(). glEnd(). All are required.

** Which of the following commands is used to draw a rectangle in OpenGL?. glColor3f(). glVertex2f(). glBegin(). glEnd(). All are required.

Which of the following modes of drawing primitives in OpenGL is most efficient?. GL_POINTS. GL_LINES. GL_TRIANGLES. GL_QUADS.

Which of the following commands is used to enable/disable blending in OpenGL?. glEnable(GL_BLEND). glDisable(GL_BLEND). glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA). All of the above.

Which of the following commands is used to specify the blending function in OpenGL?. glEnable(GL_BLEND). glDisable(GL_BLEND). glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA). glClear(GL_COLOR_BUFFER_BIT).

Which of the following commands is used to draw text in OpenGL?. glColor3f(). glVertex2f(). glutBitmapCharacter(). glEnd().

Which of the following functions is used to register a keyboard callback function in OpenGL?. glutInit(). glutDisplayFunc(). glutKeyboardFunc(). glClearColor().

Which of the following commands is used to exit the main loop in OpenGL?. glutPostRedisplay(). glutMainLoop(). glutLeaveMainLoop(). glutSetOption().

Which of the following best defines computer graphics?. The art of creating visual images by hand. The process of rendering 2D or 3D images using a computer. The study of human perception of visual stimuli. The process of printing digital images on paper.

Which of the following is not a type of computer graphics?. Vector graphics. Raster graphics. 3D graphics. Audio graphics.

What is a frame buffer?. A special type of memory used to store images in a computer. A device used to generate signals to display images on a screen. A collection of data structures used to represent an image in computer memory. A software program used to render 3D images.

What is a raster?. A line-based graphics representation. A grid of pixels used to represent an image in a computer. A type of 3D modeling technique. A graphics standard used for rendering vector graphics.

Which of the following is a Computer Graphics type?. Raster and Vector. Raster and Scalar. Scalar only. All of the above.

Curves in computer graphics is primarily used for which of the following function?. To draw different types of objects onto the screen. Zooming out a picture. Copying a picture. Zooming in a picture.

Which of the following operations can be used to zoom in or out around any axis on a three-dimensional object from its original position?. Rotation. Shearing. Scaling. Translation.

What is anti-aliasing?. A technique used to smooth out jagged edges in an image. A type of 3D modeling technique. A method for rendering vector graphics. A way of representing images using points and lines.

What is a shader?. A type of anti-aliasing algorithm. A program used to specify how objects are rendered in a 3D scene. A type of rasterization technique. A graphics standard used for rendering vector graphics.

What is a texture?. A digital image used to cover a 3D object's surface. A type of anti-aliasing algorithm. A way of representing images using points and lines. A special type of shader used to render 3D objects.

What is a normal vector?. A vector that points perpendicular to a surface. A type of shader used to render 3D objects. A method for rendering vector graphics. A type of texture used in computer graphics.

What is a Z-buffer?. A data structure used to store information about the depth of objects in a scene. A type of anti-aliasing algorithm. A program used to specify how objects are rendered in a 3D scene. A way of representing images using points and lines.

What is a wireframe model?. A type of 3D modeling technique that uses polygons to represent surfaces. A type of anti-aliasing algorithm. A way of representing images using points and lines. A program used to specify how objects are rendered in a 3D scene.

What is ray tracing?. A method for creating 2D images using geometric primitives. A technique used to create 3D models using vector graphics. A method for simulating the behavior of light in a 3D scene. A type of anti-aliasing algorithm.

What is a shader program?. A program used to specify how objects are rendered in a 3D scene. A technique used to create 2D images using geometric primitives. A method for simulating the behavior of light in a 3D scene. A type of anti-aliasing algorithm.

Which of the following is not a type of light commonly used in computer graphics?. Ambient light. Point light. Spot light. Heat light.

What is the purpose of a camera in computer graphics?. To capture photographs of a 3D scene. To simulate the perspective of a human observer in a 3D scene. To render 2D images using vector graphics. To perform anti-aliasing on a 3D image.

What is a scene graph?. A data structure used to represent a 3D scene. A program used to create 2D images using geometric primitives. A method for simulating the behavior of light in a 3D scene. A type of anti-aliasing algorithm.

Which of the following is not a method for creating 3D models?. Polygon modeling. NURBS modeling. Vector modeling. Sculpting.

What is a texture map?. A digital image used to cover a 3D object's surface. A type of anti-aliasing algorithm. A way of representing images using points and lines. A special type of shader used to render 3D objects.

What is a mesh?. A collection of polygons used to represent a 3D object's surface. A type of anti-aliasing algorithm. A method for simulating the behavior of light in a 3D scene. A way of representing images using points and lines.

What is a normal map?. A type of anti-aliasing algorithm. A texture map used to add fine detail to a 3D object's surface. A method for simulating the behavior of light in a 3D scene. A special type of shader used to render 3D objects.

What is the difference between a line segment and a ray?. A line segment has a fixed starting and ending point, while a ray has a starting point but extends infinitely in one direction. A ray has a fixed starting and ending point, while a line segment has a starting point but extends infinitely in one direction. A line segment and a ray are the same thing.

What is the equation of a circle centered at point (a, b) with radius r?. (x-a)^2 + (y-b)^2 = r^2. (x-a)^2 - (y-b)^2 = r^2. (x+a)^2 + (y+b)^2 = r^2.

What is the purpose of homogeneous coordinates?. To represent points and vectors in the same coordinate system. To represent points in a 3D space. To make it easier to perform affine transformations on points and vectors.

Which of the following is NOT an affine transformation?. Translation. Scaling. Rotation. Projection.

What is the difference between world coordinates and screen coordinates?. World coordinates describe the position of objects in a 3D space, while screen coordinates describe their position on a 2D display. Screen coordinates describe the position of objects in a 3D space, while world coordinates describe their position on a 2D display. World coordinates and screen coordinates are the same thing.

What is the purpose of a transformation matrix?. To represent an affine transformation in homogeneous coordinates. To represent a point or vector in homogeneous coordinates. To convert between world coordinates and screen coordinates.

What is a convex polygon?. A polygon with at least one interior angle greater than 180 degrees. A polygon with all interior angles less than 180 degrees. A polygon with all sides of equal length.

What is the difference between a regular polygon and an irregular polygon?. A regular polygon has all sides of equal length and all interior angles of equal measure, while an irregular polygon does not. A regular polygon has at least one interior angle greater than 180 degrees, while an irregular polygon does not. A regular polygon and an irregular polygon are the same thing.

What is the equation of a line passing through points (x1, y1) and (x2, y2)?. y = mx + b, where m = (y2 - y1)/(x2 - x1) and b = y1 - mx1. x = my + b, where m = (x2 - x1)/(y2 - y1) and b = x1 - my1. y = mx + b, where m = (x2 - x1)/(y2 - y1) and b = y1 - mx1.

What is the purpose of antialiasing?. To improve the clarity and smoothness of lines and curves in an image. To reduce the size of an image to make it easier to store or transmit. To increase the resolution of an image.

What is the equation of a parabola with vertex (h, k) and focus (h, k+p)?. (x-h)^2 = 4p(y-k). (y-k)^2 = 4p(x-h). (x-h)^2 = -4p(y-k).

What is the difference between a Bézier curve and a B-spline curve?. Bézier curves are defined by a set of control points, while B-spline curves are defined by a set of control vertices and knot vectors. Bézier curves are defined by a set of control vertices and knot vectors, while B-spline curves are defined by a set of control points. Bézier curves and B-spline curves are the same thing.

What is a rational Bézier curve?. A Bézier curve with control points that have associated weights. A Bézier curve with control points that lie on a rational function. A Bézier curve with control points that are not evenly spaceD.

What is the difference between a polygon mesh and a parametric surface?. A polygon mesh is a collection of flat polygons that approximate a curved surface, while a parametric surface is a mathematical function that defines a curved surface. A polygon mesh is a mathematical function that defines a curved surface, while a parametric surface is a collection of flat polygons that approximate a curved surface. A polygon mesh and a parametric surface are the same thing.

What is a texture map?. An image that is mapped onto a surface to give it the appearance of a certain material or pattern. A mathematical function that defines the color and shading of a surface. A set of control points used to define the shape of a surface.

What is the difference between diffuse reflection and specular reflection?. Diffuse reflection is the reflection of light in all directions, while specular reflection is the reflection of light in a single direction. Diffuse reflection is the reflection of light in a single direction, while specular reflection is the reflection of light in all directions. Diffuse reflection and specular reflection are the same thing.

What is the purpose of a normal vector?. To define the orientation of a surface. To define the position of a surface. To define the shape of a surface.

What is the difference between Gouraud shading and Phong shading?. Gouraud shading is a vertex-based shading technique, while Phong shading is a pixel-based shading technique. Gouraud shading is a pixel-based shading technique, while Phong shading is a vertex-based shading technique. Gouraud shading and Phong shading are the same thing.

What is a shadow map?. An image that is used to calculate the shadows in a scene. A mathematical function that defines the shadows in a scene. A set of control points used to define the shadows in a scene.

What is the purpose of depth buffering?. To determine which objects are visible in a scene based on their distance from the viewer. To improve the clarity and smoothness of lines and curves in an image. To increase the resolution of an image.

A collection of polygons, where the polygons can be joined together along their edges. Convex polygon. Non-convex polygon. Polygon mesh. None of the above.

Which of following is True about projection?. With an orthographic projection, the EYE can be inside the view volume. With a perspective projection, the EYE can be inside the view volume. The EYE cannot be inside neither orthographic nor perspective projection. The EYE can be inside both orthographic and perspective projection.