openframeworks / openframeworks/openFrameworks
ofDrawArrow not drawn correctly
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- Dominant language
- C++
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Description
If I draw an arrow using ofDrawArrow I don't see the head at the end of the arrow. It just draws a line.
//--------------------------------------------------------------
void ofApp::draw(){
ofDrawArrow(glm::vec3(100, 100, 0), glm::vec3(300, 300, 0), 500);
}
So I tried to increase the size of the head to 500 and here's what I got.
As you can see, the head is not correctly translated.
Original post from the forum: https://forum.openframeworks.cc/t/ofdrawarrow-not-drawn-correctly/30896/1
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by locating the implementation of ofDrawArrow and reproduce the issue with the ofDrawArrow(glm::vec3(100, 100, 0), glm::vec3(300, 300, 0), 500) example. Check the arrowhead's translation relative to the line direction, then verify that the head appears correctly aligned at the endpoint for the reported case.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- computer-graphics
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100