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All LessonsFree Lessons (5)

Introduction

Foreword Prerequisite

Introduction to Vector Graphics

Pixel Images Resizing and Drawing on Pixel Images Vector Graphics Advantages and Disadvantages Common Vector Formats Quiz

Basic Drawing Operations

Learning Objectives

Creating an Image with Pycairo

Fill and Stroke

Open and Closed Shapes

Circle and Curves

Paths and Complex Shapes

Learning Objectives Paths Lines Polygons Arcs Bezier Curves Function Curves Rectangle Quiz Challenge

Computer Color

Learning Objectives RGB Color Pycairo RGB Colors CSS Named Colors Transparency Greyscale Images and More Quiz

Transforms and State

Learning Objectives

User Space and Device Space

Save and Restore

Correcting Unequal Scaling

Current Transform Matrix

Working with Text

Learning Objectives Text Is Just Shapes Font Size Font Style Text Extents Text Alignment Quiz Challenge

Gradients and Image Fills

Learning Objectives Patterns SolidPattern LinearGradient More on LinearGradient Filling Text and Stroke with Gradient RadialGradient Working with Images Using SurfacePattern with Vectors Quiz Challenge

Clipping, Masking and Compositing

Learning Objectives Clipping More on Clipping Masking Compositing Color Adjustments Quiz Challenge

Surfaces and Output Formats

Learning Objectives Output Formats Other Surfaces Quiz

Integration with Other Libraries

Storing Image Data PIL (Pillow) Integration Numpy Integration Quiz

Conclusion

Computer Graphics in Python and Pycairo/

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Challenge 2

Challenge 2

Now, we will solve the given problem to test our understanding of transforms and state.

We'll cover the following...

Task

In the following task, we are given a rectangle. Scaling is applied to it. We ...