Cool BezierCurve demo (You can drag the endpoints around)

src/JGL.cpp

@@ -6,6 +6,7 @@
 #include <glad/glad.h>
 #include <Color3.hpp>
 #include <jlog/jlog.hpp>
+#include "J3ML/Algorithm/Bezier.h"
 
 GLfloat oldColor[4] = {0, 0, 0, 1};
 GLfloat baseColor[4] = {1, 1, 1, 1};
@@ -498,6 +499,43 @@ namespace JGL {
         J2D::FillTriangle({color.r, color.g, color.b, 255}, tri);
     }
 
+
+
+    void J2D::DrawCubicBezierCurve(const Color4 &color, const J3ML::LinearAlgebra::Vector2 &controlA,
+                                   const J3ML::LinearAlgebra::Vector2 &pointA,
+                                   const J3ML::LinearAlgebra::Vector2 &pointB,
+                                   const J3ML::LinearAlgebra::Vector2 &controlB, int subdivisions, float thickness) {
+
+
+
+
+        for (int k = 2; k < subdivisions; ++k)
+        {
+            Vector2 last = controlA;
+            Vector2 first = controlB;
+            for (int i = 0; i < k; ++i)
+            {
+                float alpha = (float)i / (float)k;
+                Vector2 step = J3ML::Algorithm::Bezier(alpha, controlA, pointA, pointB, controlB);
+                DrawLine(color, last, step, thickness);
+                last = step;
+            }
+
+            // Manually draw the last segment of the curve
+            DrawLine(color, last, first, thickness);
+
+
+        }
+
+
+        // Display control points
+        DrawPoint(Colors::Red, controlA, 2.f);
+        DrawPoint(Colors::Red, controlB, 2.f);
+        DrawPoint(Colors::Reds::Salmon, pointA, 2.f);
+        DrawPoint(Colors::Reds::Salmon, pointB, 2.f);
+
+    }
+
     void J3D::Begin() {
 
         //Get what the draw color was before we did anything.