var overlaps = (function () { function getPositions( elem ) { var pos, width, height; pos = $( elem ).position(); width = $( elem ).width(); height = $( elem ).height(); return [ [ pos.left, pos.left + width ], [ pos.top, pos.top + height ] ]; } function comparePositions( p1, p2 ) { var r1, r2; … Read more
Taking E is the starting point of the ray, L is the end point of the ray, C is the center of sphere you’re testing against r is the radius of that sphere Compute: d = L – E ( Direction vector of ray, from start to end ) f = E – C ( … Read more
To detect whether two balls collide, just check whether the distance between their centers is less than two times the radius. To do a perfectly elastic collision between the balls, you only need to worry about the component of the velocity that is in the direction of the collision. The other component (tangent to the … Read more
Here is how I would do it: bool intersects(CircleType circle, RectType rect) { circleDistance.x = abs(circle.x – rect.x); circleDistance.y = abs(circle.y – rect.y); if (circleDistance.x > (rect.width/2 + circle.r)) { return false; } if (circleDistance.y > (rect.height/2 + circle.r)) { return false; } if (circleDistance.x <= (rect.width/2)) { return true; } if (circleDistance.y <= (rect.height/2)) … Read more
How can I determine whether a 2D Point is within a Polygon?
Use pygame.Rect objects and colliderect() to detect the collision between the bounding rectangles of 2 objects or 2 images: rect1 = pygame.Rect(x1, y1, w1, h1) rect2 = pygame.Rect(x2, y2, w2, h2) if rect1.colliderect(rect2): # […] If you have to images (pygame.Surface objects), the bounding rectangle of can be get by get_rect(), where the location of … Read more
In PyGame, basic collision detection can be done using pygame.Rect objects. The Rect object offers various methods for detecting collisions between objects. Note that even the collision of a rectangular object with a circular object such as a paddle and a ball in Pong game can be roughly detected by a collision between two rectangular … Read more