Introductory program; just a static picture of a colored triangle.
Shows how to use GLUT.
Has minimal structure: only main() and a display callback.
Uses only the default viewing parameters (in fact, it never mentions viewing at all). This is an orthographic view volume with bounds of -1..1 in all three dimensions.
Draws only using glColor and glVertex within glBegin and glEnd in the display callback.
Uses only the GL_POLYGON drawing mode.
Illustrates glClear and glFlush.
triangle.cpp
// A simple introductory program; its main window contains a static picture
// of a triangle, whose three vertices are red, green and blue. The program
// illustrates viewing with default viewing parameters only.
#ifdef __APPLE_CC__
#include
#else
#include
#endif
// Clears the current window and draws a triangle.
void display() {
// Set every pixel in the frame buffer to the current clear color.
glClear(GL_COLOR_BUFFER_BIT);
// Drawing is done by specifying a sequence of vertices. The way these
// vertices are connected (or not connected) depends on the argument to
// glBegin. GL_POLYGON constructs a filled polygon.
glBegin(GL_POLYGON);
glColor3f(1, 0, 0); glVertex3f(-0.6, -0.75, 0.5);
glColor3f(0, 1, 0); glVertex3f(0.6, -0.75, 0);
glColor3f(0, 0, 1); glVertex3f(0, 0.75, 0);
glEnd();
// Flush drawing command buffer to make drawing happen as soon as possible.
glFlush();
}
// Initializes GLUT, the display mode, and main window; registers callbacks;
// enters the main event loop.
int main(int argc, char** argv) {
// Use a single buffered window in RGB mode (as opposed to a double-buffered
// window or color-index mode).
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
// Position window at (80,80)-(480,380) and give it a title.
glutInitWindowPosition(80, 80);
glutInitWindowSize(400, 300);
glutCreateWindow("A Simple Triangle");
// Tell GLUT that whenever the main window needs to be repainted that it
// should call the function display().
glutDisplayFunc(display);
// Tell GLUT to start reading and processing events. This function
// never returns; the program only exits when the user closes the main
// window or kills the process.
glutMainLoop();
}
Objects both in the real world and in object-oriented programming contain <u>attributes</u> and methods.
<h3>What is an attribute?</h3>
In Computer technology, an attribute can be defined as a unique characteristic or quality which primarily describes an entity in a software program.
<h3>What is a method?</h3>
In Computer programming, a method can be defined as a block of executable code (sets of instruction) that are written and used by programmers to break down a given problem into small but manageable fragments (pieces).
This ultimately implies that, methods are typically written and used by programmers to break down any complex problem into simple and manageable fragments (pieces). Also, all modern programming languages comprises several methods that are predefined.
In this context, we can infer and logically deduce that all objects both in the real world and in object-oriented programming generally contain <u>attributes</u> and methods.
Read more on methods here: brainly.com/question/25619349
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Answer: Im guessing b
Explanation:
bc the other ones work devices.
Answer:
sending email and low set up cost
Explanation:
The options are:
sending email
blocking multiple people to use the same file
low security
low set up cost
limited access to files
And generally, the universities look for sending mail option, and the low set up cost. They never look for blocking multiple people, low security, or limited access to the files. And hence, the correct options are as mentioned in the answer section.
