openframeworks / openframeworks/openFrameworks

ofTrueTypeFont - drawStringAsShapes and ofCamera

Open
#6,362 1 comment 2 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

section-typography
Dominant language
C++
Stars
10.4k
Forks
2.6k
Avg merge
1d 21h
Merged PRs (30d)
9

Description

When using ofTrueTypeFont and drawStringAsShapes letters are not aligned properly.

simple code here:
mCam.begin();
ofSetColor(0); ofFill(); mFont.drawStringAsShapes("varying glyph height", 0, 0);
ofDrawLine(0, 0, 1000, 0);
mCam.end();

render result

Temporary fix is force VFlipped in ofTrueTypeFont, and scale(1, -1, 1) when drawn on screen:

//drawCharAsShape(c, pos.x, pos.y, ofIsVFlipped(), ofGetStyle().bFill);
drawCharAsShape(c, pos.x, pos.y, true, ofGetStyle().bFill);

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by tracing ofTrueTypeFont's drawStringAsShapes and drawCharAsShape while reproducing the provided ofCamera example. Compare glyph alignment with the baseline and investigate the effect of ofIsVFlipped; done means the letters align correctly without forcing VFlipped or applying a scale(1, -1, 1) workaround.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
computer-graphics
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.