mirrors/SFML
1
0
Fork 0
mirror of https://github.com/SFML/SFML.git synced 2024-11-28 22:31:09 +08:00
Code Issues Packages Projects Releases Wiki Activity

Use new sf::Vector2<T> utilities

Browse Source
This commit is contained in:
Chris Thrasher 2022-03-02 18:35:13 -07:00 committed by Vittorio Romeo
parent 411d702d7a
commit 7dfc7f0202
1 changed files with 4 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
src/SFML/Graphics/Shape.cpp
View File

@ -36,18 +36,12 @@ namespace
// Compute the normal of a segment
sf::Vector2f computeNormal(const sf::Vector2f& p1, const sf::Vector2f& p2)
{
sf::Vector2f normal(p1.y - p2.y, p2.x - p1.x);
float length = std::sqrt(normal.x * normal.x + normal.y * normal.y);
sf::Vector2f normal = (p2 - p1).perpendicular();
float length = normal.length();
if (length != 0.f)
normal /= length;
return normal;
}
// Compute the dot product of two vectors
float dotProduct(const sf::Vector2f& p1, const sf::Vector2f& p2)
{
return p1.x * p2.x + p1.y * p2.y;
}
}
@ -280,9 +274,9 @@ void Shape::updateOutline()
// Make sure that the normals point towards the outside of the shape
// (this depends on the order in which the points were defined)
if (dotProduct(n1, m_vertices[0].position - p1) > 0)
if (n1.dot(m_vertices[0].position - p1) > 0)
n1 = -n1;
if (dotProduct(n2, m_vertices[0].position - p1) > 0)
if (n2.dot(m_vertices[0].position - p1) > 0)
n2 = -n2;
// Combine them to get the extrusion direction