Vector4f ColorGradient::GetColorWOErrorChecking(float f) const
{
f = Mathf::Clamp(f, OrderedNodes[0].Position, OrderedNodes[OrderedNodes.size() - 1].Position);
//Edge cases. Choose a random node side if the given value sits right on a Node.
if (f == OrderedNodes[0].Position)
{
return ((rand() % 9) < 5) ? OrderedNodes[0].LeftColor : OrderedNodes[0].RightColor;
}
if (f == OrderedNodes[OrderedNodes.size() - 1].Position)
{
return ((rand() % 9) < 5) ? OrderedNodes[OrderedNodes.size() - 1].LeftColor : OrderedNodes[OrderedNodes.size() - 1].RightColor;
}
//Count to the first node above the given position.
int index;
for (index = OrderedNodes.size() - 1; OrderedNodes[index].Position > f && index > 0; --index) { }
//Lerp between the two color values.
Vector4f leftCol = OrderedNodes[index].RightColor;
Vector4f rightCol = OrderedNodes[index + 1].LeftColor;
Interval posInt(OrderedNodes[index].Position, OrderedNodes[index + 1].Position, 0.001f, true, true);
Vector4b needReversed((unsigned char)(leftCol.x > rightCol.x), leftCol.y > rightCol.y, leftCol.z > rightCol.z, leftCol.w > rightCol.w);
float ref = posInt.Reflect(f);
float rx = (needReversed.x) ? ref : f,
ry = (needReversed.y) ? ref : f,
rz = (needReversed.z) ? ref : f,
rw = (needReversed.w) ? ref : f;
Interval ix(leftCol.x, rightCol.x, 0.001f, true, true),
iy(leftCol.y, rightCol.y, 0.001f, true, true),
iz(leftCol.z, rightCol.z, 0.001f, true, true),
iw(leftCol.w, rightCol.w, 0.001f, true, true);
rx = posInt.MapValue(ix, rx);
ry = posInt.MapValue(iy, ry);
rz = posInt.MapValue(iz, rz);
rw = posInt.MapValue(iw, rw);
Vector4f ret(rx, ry, rz, rw);
return ret;
}
void myCallback() {
puts("C: myCallback");
iz();
}