work on raytracing

2017-09-06 08:34:20 +02:00
parent c21925e86f
commit e4cd9c6b8d
32 changed files with 2790 additions and 3 deletions
--- a/math/Matrix4.h
+++ b/math/Matrix4.h
@@ -0,0 +1,114 @@
+#ifndef MATRIX4_H
+#define MATRIX4_H
+
+#include <initializer_list>
+#include <cmath>
+
+class Matrix4 {
+
+private:
+
+	float data[16];
+
+public:
+
+	Matrix4(std::initializer_list<float> lst) {
+		int idx = 0;
+		for (float f : lst) {
+			data[idx] = f; ++idx;
+		}
+	}
+
+	static Matrix4 identity() {
+		return Matrix4( {1,0,0,0, 0,1,0,0, 0,0,1,0, 0,0,0,1} );
+	}
+
+	static Matrix4 getRotationDeg(const float degX, const float degY, const float degZ) {
+		return getRotationRad(degX/180.0f*M_PI, degY/180.0f*M_PI, degZ/180.0f*M_PI);
+	}
+
+	static Matrix4 getRotationRad(const float radX, const float radY, const float radZ) {
+
+		const float g = radX; const float b = radY; const float a = radZ;
+		const float a11 = std::cos(a)*std::cos(b);
+		const float a12 = std::cos(a)*std::sin(b)*std::sin(g)-std::sin(a)*std::cos(g);
+		const float a13 = std::cos(a)*std::sin(b)*std::cos(g)+std::sin(a)*std::sin(g);
+		const float a21 = std::sin(a)*std::cos(b);
+		const float a22 = std::sin(a)*std::sin(b)*std::sin(g)+std::cos(a)*std::cos(g);
+		const float a23 = std::sin(a)*std::sin(b)*std::cos(g)-std::cos(a)*std::sin(g);
+		const float a31 = -std::sin(b);
+		const float a32 = std::cos(b)*std::sin(g);
+		const float a33 = std::cos(b)*std::cos(g);
+		return Matrix4({
+			a11,	a12,	a13,	0,
+			a21,	a22,	a23,	0,
+			a31,	a32,	a33,	0,
+			0,		0,		0,		1
+		});
+
+	}
+
+	static Matrix4 getTranslation(const float x, const float y, const float z) {
+		return Matrix4({
+			1, 0, 0, x,
+			0, 1, 0, y,
+			0, 0, 1, z,
+			0, 0, 0, 1
+		});
+	}
+
+	static Matrix4 getScale(const float x, const float y, const float z) {
+		return Matrix4({
+			x, 0, 0, 0,
+			0, y, 0, 0,
+			0, 0, z, 0,
+			0, 0, 0, 1
+		});
+	}
+
+	float operator [] (const int idx) const {return data[idx];}
+
+	bool operator == (const Matrix4& o) const {
+		for (int i = 0; i < 16; ++i) {
+			if (data[i] != o.data[i]) {return false;}
+		}
+		return true;
+	}
+
+};
+
+struct Vector4 {
+
+	float x,y,z,w;
+
+	Vector4() : x(0), y(0), z(0), w(0) {;}
+
+	Vector4(float x, float y, float z, float w) : x(x), y(y), z(z), w(w) {;}
+
+	bool operator == (const Vector4 o) const {
+		return (x==o.x) && (y==o.y) && (z==o.z) && (w==o.w);
+	}
+
+};
+
+inline Vector4 operator * (const Matrix4& mat, const Vector4& vec) {
+
+	return Vector4(
+		(mat[ 0]*vec.x + mat[ 1]*vec.y + mat[ 2]*vec.z + mat[ 3]*vec.w),
+		(mat[ 4]*vec.x + mat[ 5]*vec.y + mat[ 6]*vec.z + mat[ 7]*vec.w),
+		(mat[ 8]*vec.x + mat[ 9]*vec.y + mat[10]*vec.z + mat[11]*vec.w),
+		(mat[12]*vec.x + mat[13]*vec.y + mat[14]*vec.z + mat[15]*vec.w)
+	);
+
+}
+
+inline Matrix4 operator * (const Matrix4& m1, const Matrix4& m2) {
+	return Matrix4({
+		m1[ 0]*m2[ 0] + m1[ 1]*m2[ 4] + m1[ 2]*m2[ 8] + m1[ 3]*m2[12],		m1[ 0]*m2[ 1] + m1[ 1]*m2[ 5] + m1[ 2]*m2[ 9] + m1[ 3]*m2[13],		m1[ 0]*m2[ 2] + m1[ 1]*m2[ 6] + m1[ 2]*m2[10] + m1[ 3]*m2[14],		m1[ 0]*m2[ 3] + m1[ 1]*m2[ 7] + m1[ 2]*m2[11] + m1[ 3]*m2[15],
+		m1[ 4]*m2[ 0] + m1[ 5]*m2[ 4] + m1[ 6]*m2[ 8] + m1[ 7]*m2[12],		m1[ 4]*m2[ 1] + m1[ 5]*m2[ 5] + m1[ 6]*m2[ 9] + m1[ 7]*m2[13],		m1[ 4]*m2[ 2] + m1[ 5]*m2[ 6] + m1[ 6]*m2[10] + m1[ 7]*m2[14],		m1[ 4]*m2[ 3] + m1[ 5]*m2[ 7] + m1[ 6]*m2[11] + m1[ 7]*m2[15],
+		m1[ 8]*m2[ 0] + m1[ 9]*m2[ 4] + m1[10]*m2[ 8] + m1[11]*m2[12],		m1[ 8]*m2[ 1] + m1[ 9]*m2[ 5] + m1[10]*m2[ 9] + m1[11]*m2[13],		m1[ 8]*m2[ 2] + m1[ 9]*m2[ 6] + m1[10]*m2[10] + m1[11]*m2[14],		m1[ 8]*m2[ 3] + m1[ 9]*m2[ 7] + m1[10]*m2[11] + m1[11]*m2[15],
+		m1[12]*m2[ 0] + m1[13]*m2[ 4] + m1[14]*m2[ 8] + m1[15]*m2[12],		m1[12]*m2[ 1] + m1[13]*m2[ 5] + m1[14]*m2[ 9] + m1[15]*m2[13],		m1[12]*m2[ 2] + m1[13]*m2[ 6] + m1[14]*m2[10] + m1[15]*m2[14],		m1[12]*m2[ 3] + m1[13]*m2[ 7] + m1[14]*m2[11] + m1[15]*m2[15]
+	});
+}
+
+#endif // MATRIX4_H