Power Graphics Using Turbo Pascal

Contents
Preface
Chapter 1 The BGI Quick Tour
	Getting Started
	Initializing the BGI
	Writing the Basic BGI Program
	Error Checking
	Working with Coordinates
	Drawing Commands
		Getting Down to Pixels
	Drawing Figures
	Filling Figures
	Text and Fonts
	Fractal Landscapes
Chapter 2 The BGI Drawing Functions
	Working with Pixels
		Plotting a Single Pixel
	General Drawing Commands
	Drawing Lines
		Drawing Lines with Absolute Coordinates
		Drawing Lines with Relative Coordinates
		Setting a Line Style
		Predefined Line Patterns
		Determining the Current Line Style
		User-Defined Line Styles
	Drawing Rectangles
	Working with Polygons
	Arcs, Circles, and Ellipses
		Drawing Arcs
		Arc Endpoints
		Circles and Ellipses
	Fundamentals of Animation
	Filling Regions
		Setting the Fill Pattern
		User-Defined Fill Patterns
		Getting the Fill Pattern
		Experimenting with User-Defined Fill Patterns
		Using the Arrow Keys
		Working with Flood-Fills
Chapter 3 The BGI Fonts and Text
	Text in Graphics Mode
		The Bit-Mapped Font
		The Four Stroke Fonts
		The BGI Text Functions
	Writing Text to the Screen
		Writing Text to a Pixel Location
		An Example of Text Display
	How Turbo Pascal Accesses Fonts
		Selecting and Loading a Font
		Errors in Loading a Font
	Working with Text Justification
		Determining the Current Text Settings
		Determining the Character Dimensions
		A Note about Vertical Character Dimensions
		Determining the Character Dimensions
	Magnifying Characters
		Fitting Text Inside a Box
		A Note on Clipping Text
	Displaying Characters and Numbers
	Extended Text Manipulation Routines
		Graphics Version of write
		Working with Text Input
		Entering Numeric Values
Chapter 4 Presentation Graphics
	The Basic Graph Types
	Getting Started
	Pie Charts
		Drawing a Slice
		Labeling Pie Slices
		Making Each Slice Different
		Creating a Legend
		Emphasizing a Slice
	Creating Bar Graphs
	Three-Dimensional Bar Graphs
	Coin Graphs
	Animated Graphs
Chapter 5 Graphics Techniques In Two Dimensions
	Screen Coordinates
		Working with Aspect Ratios
	Screen and World Coordinates
		Mapping between Coordinate Systems
	Transformations
		Translation
		Scaling a Two-Dimensional Polygon
		Rotating a Two-Dimensional Polygon
		The Shear Transform
		A Matrix Demo
	Object Oriented Programming
		Working with OOP
		An Object-Oriented Utility
		The Internal Object List
		Adding an Object
		Selecting an Object
Chapter 6 Animation
	A Closer Look at lnbetweening
		Animating a Line
		Working with lnbetweening
	Working with Getlmage and Putlmage
		Animating Objects On a Backdrop
		Animating Multiple Objects
		Limitations of Getlmage and Putlmage
		Animating Using the Palette
		Using Multiple Screen Pages
Chapter 7 Creating Mouse Tools
	Starting with the Mouse
	Mouse Overview
	Accessing the Mouse Driver
	The Mouse Functions
		Mouse Initialization
		More Mouse Routines
		The Mouse Cursor
		The Default Mouse Cursor
		Mouse Position
		Mouse Buttons
		Mouse in a Box
		More Mouse Control
	Adding Keyboard Input
	Emulating a Mouse
		The Emulated Mouse Cursor
		Emulated Mouse Position
		Emulated Mouse Buttons
	Putting Your Mouse to the Test
Chapter 8 Working with Icons
	Why Icons?
	Representing Icons
	Saving Icons
	Reading an Icon File
	The Interactive Editor
		Creating the Screen
		Creating an Enlarged Icon
		Displaying the Original Icon
		Interacting with the User
		Toggling an Icon Pixel
		Exiting the Icon Editor
		Sample Icons
Chapter 9 Pop-up Windows in Graphics
	The Basic Approach
	Working with a Stack
	Initializing the Windows Package
	The Pop-up Routine
		A Closer Look at GPopup
	Saving the Screen
	Creating the Pop-up Window
	Removing a Pop-up Window
		Removing All Windows
	Using the Windows Package
	Test Program
Chapter 10 Interactive Drawing Tools
	Interactive Drawing
	An Interactive Graphics Package
		Drawing Conventions
	A Close Look at the Draw.Pas Tools
		Drawing with a Pencil
		Erasing
		Spray Painting Effect
		Drawing Lines
		Drawing Polygons
		Drawing Squares
		Drawing Circles
		Drawing Ellipses
		Drawing Arcs
Chapter 11 A Paint Program
	Overview of the Paint Program
	The Unit Files
	Setting Up the Environment
	The Paint Routines
		The Clear Screen Command
		Quitting the Program
		The Undo Operation
	The Pull-down Menus
	Changing the Fill Style
	The Text Routine
	User Interaction
	Using the Paint Program
	Enhancing the Paint Program
		Ideas to Experiment With
Chapter 12
A CAD Program
	Painting versus Drafting
	Setting up the Screen
	The Object List
	Drawing Objects
		Drawing Polygons and Circles
		Working with Lines
		Text as a Graphics Object
		Displaying the Graphics Objects
	Deleting a Graphics Object
	The Duplicate Function
	The Rotate Command
	Changing the Drawing Order
	Selecting and Moving an Object
	Extending the CAD Program
Chapter 13 Three-Dimensional Graphics
	Adding the Third Dimension
		Using a Camera Model
	Objects in Three Dimensions
	Transforming from World to Eye Coordinates
	Clipping in Three Dimensions
	Perspective Projection
	Object Files
	Displaying a Three-Dimensional Object
		Setting the Viewing Parameters
	Using the Three-Dimensional Program
	Sample Objects
	Extending the Program
Index