Drawing & Painting by Numbers: Proportions, Grid Enlargement, Perspective, Composition Grids, Colour-Mixing Ratios, Canvas Sizes & Framing
Use simple maths to draw and paint more accurately: measure proportions in head units, enlarge a sketch with the grid method, place objects in one- and two-point perspective using similar triangles, set up thirds and golden-ratio grids, mix colours in parts and amounts, fit images to canvas sizes and plan mats and frames, with every cell checked as you go.
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About this course
In this course you use a spreadsheet to plan drawings and paintings with simple maths, all with fictional artworks. You measure a figure in head units and compare landmarks with a canon, enlarge a sketch with the grid method and transfer points, and compare aspect ratios to decide between cropping and margins. You place fence posts in one-point perspective with similar triangles, build box edges between two vanishing points and check lines, set up rule-of-thirds and golden-ratio grids, turn colour recipes in parts into millilitres and paint per canvas, and finish by planning mats, moulding lengths and a price chart.
Lessons
- Proportions in Head Units: a Canon Table, Target Positions and Measured vs Target Ratios Pro
- Grid Enlargement: Scale Factor, Grid Squares on Paper and Canvas, Transferring Points Pro
- Aspect Ratios & Canvas Sizes: Crop or Scale, and Even Margins Pro
- One-Point Perspective: Horizon, Vanishing Point and Receding Sizes by Similar Triangles Pro
- Two-Point Perspective: Box Corners from Two Vanishing Points and Checking Lines Pro
- Composition Grids: Rule of Thirds, Golden-Ratio Lines and Focal-Point Placement Pro
- Colour-Mixing Ratios: Parts to Millilitres, the Limiting Colour and Paint per Canvas Pro
- Capstone: Mats, Frame Moulding Length and a Price-per-cm² Table with a Chart Pro