0
votes
0answers
57 views

Going from point a to b through a curve using “gravity” [duplicate]

I have enemies and when they die they spawn an energy ball with a given velocity. I want to move this ball to the player using "gravity" to create a curved path. I have a version of the function but ...
11
votes
8answers
2k views

Converting a 2D curve into points for data storage

I’ve created an algorithm which converts any curve i.e. path into minimum number of points so that I can save it into a file or database. The method is simple: it moves three points in equal steps ...
0
votes
1answer
331 views

How do I detect the intersection of a curve with itself?

I'm developing a game in which the player can draw a line. I want to detect if that line intersects with itself. How would I do this?
2
votes
0answers
581 views

Catmull Rom Spline - Constant Speed

Given the equations found in the answer here: Determine arc-length of a Catmull-Rom spline How would one A) Apply this to a 3D Catmull-Rom Spline, and B) write A out programmatically (for the math ...
6
votes
2answers
194 views

How do you calculate if a line is facing a curve?

Given the 2 points describing a line segment, and the 3 points describing a quadratic bezier curve, how do you calculate if the line is facing towards or away from the curve? The line has a fixed ...
14
votes
3answers
504 views

How do you calculate the nearest point on 2 curves?

Given the points of a line and a quadratic bezier curve, how do you calculate their nearest point? .... Similarly, given the points of 2 curves, how do you get the nearest point?
9
votes
2answers
305 views

How do you calculate if 2 lines are facing toward or away?

Given the 4 points describing 2 line segments, how do you calculate if line A is towards or away from line B? The 2 lines have a fixed length, and can be measured as distance from x1/y1 to x2/y2.