public static Vertex FastLerp(Vertex a, Vertex b, float t) => new Vertex
{
point = Vector4.Lerp(a.point, b.point, t),
onePerZ = MathRaster.Lerp(a.onePerZ, b.onePerZ, t),
uv = Vector2.Lerp(a.uv, b.uv, t),
normal = Vector3.Lerp(a.normal, b.normal, t),
color = Color32.Lerp(a.color, b.color, t),
distance2Cam = MathRaster.Lerp(a.distance2Cam, b.distance2Cam, t)
};
private static bool BackFaceCulling(Vertex p1, Vertex p2, Vertex p3)
{
var v1 = p2.point - p1.point;
var v2 = p3.point - p2.point;
var normal = Vector3.Cross(MathRaster.V4ToV3(v1), MathRaster.V4ToV3(v2));
var view_dir = MathRaster.V4ToV3(p1.point) - new Vector3(0, 0, 0);
return(Vector3.Dot(normal, view_dir) > 0);
}
public override Intermediate Lerp(Intermediate rhs, float facter)
{
var right = (SampleInterData)rhs;
return(new SampleInterData
{
z_buff = MathRaster.Lerp(z_buff, right.z_buff, facter),
UV = Vector2.Lerp(UV, right.UV, facter),
FragPos = Vector3.Lerp(FragPos, right.FragPos, facter),
Normal = Vector3.Lerp(Normal, right.Normal, facter)
});
}
public override Color32 Value(float u, float v, Vector3 p)
{
if (dir == 1)
{
var t = u;
u = 1 - v;
v = t;
}
u = u * scale % 1;
v = v * scale % 1;
var i = MathRaster.Range((int)(u * w), 0, w - 1);
var j = MathRaster.Range((int)((1 - v) * h - 0.001f), 0, h - 1);
return(new Color32(
data[3 * i + 3 * w * j] / 255f,
data[3 * i + 3 * w * j + 1] / 255f,
data[3 * i + 3 * w * j + 2] / 255f));
// if (dir == 1)
// {
// var t = u;
// u = 1 - v;
// v = t;
// }
// u = u * scale % 1;
// v = v * scale % 1;
//
// var U = u * w;
// var V = (1 - v) * h - 0.001f;
// var u1 = (int)Math.Floor(U);
// var u2 = (int)Math.Ceiling(U);
//
// var v1 = (int)Math.Floor(V);
// var v2 = (int)Math.Ceiling(V);
//
// var color1 = Color32.Lerp(GetColor(u1, v1), GetColor(u2, v1), U - u1);
// var color2 = Color32.Lerp(GetColor(u1, v2), GetColor(u2, v2), U - u1);
// var color = Color32.Lerp(color1, color2, V - v1);
// return color;
// Color32 GetColor(int _u, int _v)
// {
// var i = MathRaster.Range(_u, 0, w - 1);
// var j = MathRaster.Range(_v, 0, h - 1);
// return new Color32(
// data[3 * i + 3 * w * j] / 255f,
// data[3 * i + 3 * w * j + 1] / 255f,
// data[3 * i + 3 * w * j + 2] / 255f);
// }
}
public override Color32 Shade(Vertex p)
{
var d = (p.distance2Cam / 2f);
var d1 = (int)Math.Floor(d);
var d2 = (int)Math.Ceiling(d);
if (d2 > 8)
{
d2 = 8;
}
if (d1 > 8)
{
d1 = 8;
}
var gray = MathRaster.Lerp(d1 / 9f, d2 / 9f, d - d1);
var c = Color32.Lerp(texture.midmaps[d1].Value(p.uv.X, p.uv.Y, Vector3.One), texture.midmaps[d2].Value(p.uv.X, p.uv.Y, Vector3.One), d - d1);
return(new Color32(0, gray, 0, 1) * c);
return(Color32.Lerp(texture.midmaps[d1].Value(p.uv.X, p.uv.Y, Vector3.One), texture.midmaps[d2].Value(p.uv.X, p.uv.Y, Vector3.One), d - d1));
}
public Matrix4x4 CaculateMatrix()
{
M = MathRaster.GetRotationMatrix(rotation) * Matrix4x4.CreateTranslation(position);
return(M);
}
public static RgbaFloat LowLevelColor(Color32 c) => new RgbaFloat(MathRaster.Range(c.r, 0, 1), MathRaster.Range(c.g, 0, 1), MathRaster.Range(c.b, 0, 1), MathRaster.Range(c.a, 0, 1));
public static void Caculate()
{
V = Matrix4x4.Transpose(MathRaster.GetRotationMatrix(main.transform.rotation) * Matrix4x4.CreateTranslation(main.transform.position));
P = GetProjection(main.FOV, main.Aspect, main.Near, main.Far);
}
public Matrix4x4 CaculateMatrix()
{
M = MathRaster.GetRotationMatrix(rotation / 57.3f) * Matrix4x4.CreateTranslation(position);
//TiM=Matrix4x4.Transpose(MathRaster.GetRotationMatrix(rotation/57.3f) * Matrix4x4.CreateTranslation(position));
return(M);
}
