Developer Builds: Graphing mode uses a mock engine implementation. The proprietary Microsoft graphing engine is not included in the open-source repository. The UI is fully functional and community members can contribute to the interface design.
Overview
Graphing mode provides a full-featured graphing calculator experience with support for multiple equations, variables, interactive tracing, and mathematical analysis. Source Reference:src/Calculator/Views/GraphingCalculator/GraphingCalculator.xaml.cs
Key Features
Multi-Equation Graphing
Plot multiple equations simultaneously with color coding
Interactive Tracing
Trace along curves to find exact coordinate values
Key Graph Features
Automatically identify zeros, intercepts, maxima, and minima
Variables Support
Define and use variables in your equations
Zoom Controls
Zoom in/out and pan to explore the graph
Share & Export
Share graphs as images with equations
Dual-Mode Interface
The graphing calculator offers two modes:Graph Mode
- Full graph display
- Zoom and pan controls
- Interactive tracing
- Graph settings access
Equation Mode
- Equation input area
- Add/remove equations
- Edit variables
- Key graph features panel
src/Calculator/Views/GraphingCalculator/GraphingCalculator.xaml.cs:662-677
Equation Input
Supported Functions
The graphing calculator supports standard mathematical notation:- Basic operators: +, -, *, /
- Exponents: x^2, x^n
- Trigonometric: sin, cos, tan
- Logarithmic: log, ln
- Constants: π (pi), e
- Parentheses: ( ) for grouping
Multi-Equation Support
- Add multiple equations using the ”+” button
- Each equation has a unique color
- Toggle equation visibility
- Delete equations individually
- Reorder equations
src/Calculator/Views/GraphingCalculator/GraphingCalculator.xaml.cs:277-325
MathML Formatting
Equations are displayed with beautiful mathematical formatting:- Proper fraction rendering
- Exponent superscripts
- Mathematical symbols
- Real-time formatting as you type
src/Calculator/Views/GraphingCalculator/GraphingCalculator.xaml.cs:824-830
Variables
Define custom variables to use in equations:Variable Management
- Create variables with any single-letter name
- Assign numeric values
- Use variables across multiple equations
- Edit variable values and see graph update in real-time
src/Calculator/Views/GraphingCalculator/GraphingCalculator.xaml.cs:272-275
Variable Editor
Access the variable editor to:- View all defined variables
- Edit variable values
- See which equations use each variable
src/Calculator/Views/GraphingCalculator/GraphingCalculator.xaml.cs:530-533
Variables are automatically detected when you use them in equations. No need to declare them separately.
Interactive Graph Features
Zoom Controls
- Zoom In - Ctrl + Plus key or button
- Zoom Out - Ctrl + Minus key or button
- Zoom from Center - Maintains graph center point
- Pinch Zoom - Touch gesture support
src/Calculator/Views/GraphingCalculator/GraphingCalculator.xaml.cs:327-337
Pan & Manipulation
- Click and drag to pan the graph
- Touch gestures for mobile devices
- Automatic grid adjustment
- Manual adjustment mode when you pan
src/Calculator/Views/GraphingCalculator/GraphingCalculator.xaml.cs:535-546
Grid Reset
Return to automatic “best fit” view:- Resets zoom to show all graphed equations
- Centers graph optimally
- Returns to automatic adjustment mode
src/Calculator/Views/GraphingCalculator/GraphingCalculator.xaml.cs:849-869
Active Tracing
Explore your graphs with interactive tracing:Trace Mode
- Click the “Active Tracing” button
- A cursor appears on the graph
- Use arrow keys to move along the curve
- Coordinate values display in real-time
src/Calculator/Views/GraphingCalculator/GraphingCalculator.xaml.cs:597-633
Trace Features
- Coordinate Display - Shows (x, y) values as you trace
- Multi-Curve Support - Trace different equations
- Keyboard Control - Arrow keys for precise movement
- Visual Cursor - Cross-hair pointer with shadow effect
- Popup Values - Floating coordinate display follows cursor
src/Calculator/Views/GraphingCalculator/GraphingCalculator.xaml.cs:363-395
Exiting Trace Mode
- Press Escape key
- Click Active Tracing button again
- Graph loses focus
src/Calculator/Views/GraphingCalculator/GraphingCalculator.xaml.cs:635-643
Key Graph Features
Automatically analyze equations to find important points:Analyzed Features
- Zeros/Roots - Where the function crosses the x-axis
- Y-Intercept - Where the function crosses the y-axis
- Minima - Local minimum points
- Maxima - Local maximum points
- Inflection Points - Where concavity changes
Feature Panel
Click “Analyze” on any equation to:- View list of key features
- See exact coordinate values
- Navigate between features
- Close and return to equation editing
src/Calculator/Views/GraphingCalculator/GraphingCalculator.xaml.cs:553-569
Key graph features are calculated within the visible graph range.
Graph Settings
Customize the graph appearance and behavior:Available Settings
- X-axis range - Set custom min/max values
- Y-axis range - Set custom min/max values
- Theme - Match app theme or always use light theme
- Grid lines - Show/hide grid
src/Calculator/Views/GraphingCalculator/GraphingCalculator.xaml.cs:656-703
Theme Options
- Match App Theme - Graph colors follow Windows Calculator theme
- Always Light - Graph always uses light background
- High Contrast - Automatically adapts to high contrast mode
src/Calculator/Views/GraphingCalculator/GraphingCalculator.xaml.cs:756-772
Share Functionality
Share your graphs with others:Share Content
- Graph image (PNG format, 600px width)
- All plotted equations with color indicators
- Variable definitions and values
- HTML-formatted for rich display
src/Calculator/Views/GraphingCalculator/GraphingCalculator.xaml.cs:399-500
Copy Graph
Right-click the graph to:- Copy graph image to clipboard
- Paste into other applications
- Use in documents and presentations
src/Calculator/Views/GraphingCalculator/GraphingCalculator.xaml.cs:832-842
Responsive Design
The graphing calculator adapts to different window sizes:Small State (Narrow Window)
- Toggle between equation and graph panels
- Full-width equation input
- Full-width graph display
- Toggle button to switch views
Large State (Wide Window)
- Side-by-side equation and graph panels
- Simultaneous editing and visualization
- More equations visible at once
src/Calculator/Views/GraphingCalculator/GraphingCalculator.xaml.cs:216-219
Accessibility Features
Screen Reader Support
- Automatic announcements for graph changes
- Named regions for all controls
- Descriptive automation names
- Live region updates for tracing values
src/Calculator/Views/GraphingCalculator/GraphingCalculator.xaml.cs:720-742
Keyboard Navigation
- Full keyboard support for all features
- Keyboard shortcuts for zoom
- Tab navigation through equations
- Arrow keys for tracing
High Contrast Mode
- Automatic detection and adaptation
- Cursor shadow hidden in high contrast
- Optimized color schemes
src/Calculator/Views/GraphingCalculator/GraphingCalculator.xaml.cs:814-822
Graph Automation
The graph control provides detailed automation information:- Current axis ranges (x-min, x-max, y-min, y-max)
- Number of equations plotted
- Localized descriptions for screen readers
src/Calculator/Views/GraphingCalculator/GraphingCalculator.xaml.cs:720-742
Common Use Cases
- Education - Visualizing mathematical concepts
- Homework - Solving and verifying equations
- Function analysis - Finding maxima, minima, and roots
- Comparison - Plotting multiple functions to compare behavior
- Presentations - Creating graphs for reports and presentations
Related Features
- Scientific Calculator - Advanced mathematical functions
- Standard Calculator - Basic calculations