cube

3 files changed, 323 insertions, 0 deletions

diff --git a/public/gl/math/Mat4.js b/public/gl/math/Mat4.js
new file mode 100644
index 0000000..a342c0a
--- /dev/null
+++ b/public/gl/math/Mat4.js
@@ -0,0 +1,157 @@
+export class Mat4 {
+
+    constructor() {
+        this.data = [
+            1, 0, 0, 0,
+            0, 1, 0, 0,
+            0, 0, 1, 0,
+            0, 0, 0, 1
+        ]
+    }
+
+    set(m00, m01, m02, m03, m10, m11, m12, m13, m20, m21, m22, m23, m30, m31, m32, m33) {
+        const d = this.data
+        d[0] = m00; d[1] = m01; d[2] = m02; d[3] = m03;
+        d[4] = m10; d[5] = m11; d[6] = m12; d[7] = m13;
+        d[8] = m20; d[9] = m21; d[10] = m22; d[11] = m23;
+        d[12] = m30; d[13] = m31; d[14] = m32; d[15] = m33;
+        return this
+    }
+
+    clone() {
+        return new Mat4().arr(this.da)
+    }
+
+    arr(arr, offset = 0) {
+        for(let i = 0; i < 16; i++) {
+            this.data[i] = arr[i + offset]
+        }
+        return this
+    }
+
+    identity() {
+        this.set(
+            1, 0, 0, 0,
+            0, 1, 0, 0,
+            0, 0, 1, 0,
+            0, 0, 0, 1
+        )
+        return this
+    }
+
+    copy(m) {
+        const d = this.data
+        const o = m.data
+        d[0] = o[0]; d[1] = o[1]; d[2] = o[2]; d[3] = o[3];
+        d[4] = o[4]; d[5] = o[5]; d[6] = o[6]; d[7] = o[7];
+        d[8] = o[8]; d[9] = o[9]; d[10] = o[10]; d[11] = o[11];
+        d[12] = o[12]; d[13] = o[13]; d[14] = o[14]; d[15] = o[15];
+        return this
+    }
+
+    mult(v) {
+        return this.multmat(this.clone(), v)
+    }
+
+    premult(v) {
+        return this.multmat(v, this.clone())
+    }
+
+    multmat(ma, mb) {
+        const a = ma.data;
+		const b = mb.data
+        const d = this.data;
+
+        const a00 = a[0],  a01 = a[1],  a02 = a[2],  a03 = a[3];
+		const a10 = a[4],  a11 = a[5],  a12 = a[6],  a13 = a[7];
+		const a20 = a[8],  a21 = a[9],  a22 = a[10], a23 = a[11];
+		const a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15];
+
+		const b00 = b[0],  b01 = b[1],  b02 = b[2],  b03 = a[3];
+		const b10 = b[4],  b11 = b[5],  b12 = b[6],  b13 = a[7];
+		const b20 = b[8],  b21 = b[9],  b22 = b[10], b23 = a[11];
+		const b30 = b[12], b31 = b[13], b32 = b[14], b33 = a[15];
+
+		d[0]  = a00 * b00 + a01 * b10 + a02 * b20 + a03 * b30;
+		d[1]  = a00 * b01 + a01 * b11 + a02 * b21 + a03 * b31;
+		d[2]  = a00 * b02 + a01 * b12 + a02 * b22 + a03 * b32;
+		d[3] = a00 * b03 + a01 * b13 + a02 * b23 + a03 * b33;
+
+		d[4] = a10 * b00 + a11 * b10 + a12 * b20 + a13 * b30;
+		d[5] = a10 * b01 + a11 * b11 + a12 * b21 + a13 * b31;
+		d[6] = a10 * b02 + a11 * b12 + a12 * b22 + a13 * b32;
+		d[7] = a10 * b03 + a11 * b13 + a12 * b23 + a13 * b33;
+
+		d[8]  = a20 * b00 + a21 * b10 + a22 * b20 + a23 * b30;
+		d[9]  = a20 * b01 + a21 * b11 + a22 * b21 + a23 * b31;
+		d[10] = a20 * b02 + a21 * b12 + a22 * b22 + a23 * b32;
+		d[11] = a20 * b03 + a21 * b13 + a22 * b23 + a23 * b33;
+
+		d[12] = a30 * b00 + a31 * b10 + a32 * b20 + a33 * b30;
+		d[13] = a30 * b01 + a31 * b11 + a32 * b21 + a33 * b31;
+		d[14] = a30 * b02 + a31 * b12 + a32 * b22 + a33 * b32;
+		d[15] = a30 * b03 + a31 * b13 + a32 * b23 + a33 * b33;
+
+		return this;
+    }
+
+    pos(v) {
+        const d = this.data
+
+        const m30 = d[0] * v.x + d[4] * v.y + d[8] * v.z;
+        const m31 = d[1] * v.x + d[5] * v.y + d[9] * v.z;
+        const m32 = d[2] * v.x + d[6] * v.y + d[10] * v.z;
+        const m33 = d[3] * v.x + d[7] * v.y + d[11] * v.z; 
+
+		d[3] += m30;
+        d[7] += m31;
+        d[11] += m32;
+        d[15] += m33;
+		return this;
+	}
+
+    rot(v) {
+        const da = this.data;
+		const c3 = Math.cos(v.z)
+        const s3 = Math.sin(v.z)
+		const c2 = Math.cos(v.x)
+        const s2 = Math.sin(v.x)
+		const c1 = Math.cos(v.y)
+        const s1 = Math.sin(v.y)
+
+        da[0] = c1 * c3 + s1 * s2 * s3
+        da[4] = c2 * s3
+        da[8] = c1 * s2 * s3 - c3 * s1
+
+        da[1] = c3 * s1 * s2 - c1 * s3
+        da[5] = c2 * c3
+        da[9] = c1 * c3 * s2 + s1 * s3
+
+        da[2] = c2 * s1
+        da[6] = -s2
+        da[10] = c1 * c2
+
+        return this
+    }
+
+    scale( v ) {
+		const d = this.data;
+
+		d[0] *= v.x; d[1] *= v.y; d[2] *= v.z;
+		d[4] *= v.x; d[5] *= v.y; d[6] *= v.z;
+		d[8] *= v.x; d[9] *= v.y; d[10] *= v.z;
+		d[12] *= v.x; d[13] *= v.y; d[14] *= v.z;
+
+		return this;
+	}
+
+    get() {
+        const d = this.data
+        return [
+            d[0], d[4], d[8], d[12],
+            d[1], d[5], d[9], d[13],
+            d[2], d[6], d[10], d[14],
+            d[3], d[7], d[11], d[15] 
+        ]
+    }
+}
\ No newline at end of file
diff --git a/public/gl/math/Vec2.js b/public/gl/math/Vec2.js
new file mode 100644
index 0000000..6156e40
--- /dev/null
+++ b/public/gl/math/Vec2.js
@@ -0,0 +1,78 @@
+export class Vec2 {
+
+    constructor(x = 0, y = 0) {
+        this.x = x
+        this.y = y
+    }
+
+    set(x,y) {
+        this.x = x
+        this.y = y
+        return this
+    }
+
+    clone() {
+        return new Vec2(this.x, this.y)
+    }
+
+    add(v) {
+        this.x += v.x
+        this.y += v.y
+        return this
+    }
+
+    sub(v) {
+        this.x -= v.x
+        this.y -= v.y
+        return this
+    }
+
+    copy(v) {
+        this.x = v.x
+        this.y = v.y
+        return this
+    }
+
+    multV(v) {
+        this.x *= v.x
+        this.y *= v.y
+        return this
+    }
+
+    multS(s) {
+        this.x *= s
+        this.y *= s
+        return this
+    }
+
+    divV(v) {
+        this.x *= (1 / v.x)
+        this.y *= (1 / v.y)
+        return this
+    }
+
+    divS(s) {
+        this.x *= (1 / s)
+        this.y *= (1 / s)
+        return this
+    }
+
+    invert() {
+        this.x = this.x == 0 ? 0 : (1 / this.x)
+        this.y = this.y == 0 ? 0 : (1 / this.y)
+        return this
+    }
+
+    normalize() {
+        return this.divS(this.length() || 1)
+    }
+    
+	dot(v) {
+		return this.x * v.x + this.y * v.y;
+	}
+    
+    length() {
+		return Math.sqrt(this.x * this.x + this.y * this.y);
+	}
+
+}
\ No newline at end of file
diff --git a/public/gl/math/Vec3.js b/public/gl/math/Vec3.js
new file mode 100644
index 0000000..d77d49d
--- /dev/null
+++ b/public/gl/math/Vec3.js
@@ -0,0 +1,88 @@
+export class Vec3 {
+
+    constructor(x = 0, y = 0, z = 0) {
+        this.x = x
+        this.y = y
+        this.z = z
+    }
+
+    set(x,y,z) {
+        this.x = x
+        this.y = y
+        this.z = z
+        return this
+    }
+
+    clone() {
+        return new Vec3(this.x, this.y, this.z)
+    }
+
+    add(v) {
+        this.x += v.x
+        this.y += v.y
+        this.x += v.x
+        return this
+    }
+
+    sub(v) {
+        this.x -= v.x
+        this.y -= v.y
+        this.x -= v.z
+        return this
+    }
+
+    copy(v) {
+        this.x = v.x
+        this.y = v.y
+        this.z = v.z
+        return this
+    }
+
+    multV(v) {
+        this.x *= v.x
+        this.y *= v.y
+        this.z *= v.z
+        return this
+    }
+
+    multS(s) {
+        this.x *= s
+        this.y *= s
+        this.z *= s
+        return this
+    }
+
+    divV(v) {
+        this.x *= (1 / v.x)
+        this.y *= (1 / v.y)
+        this.z *= (1 / v.z)
+        return this
+    }
+
+    divS(s) {
+        this.x *= (1 / s)
+        this.y *= (1 / s)
+        this.z *= (1 / s)
+        return this
+    }
+
+    invert() {
+        this.x = this.x == 0 ? 0 : (1 / this.x)
+        this.y = this.y == 0 ? 0 : (1 / this.y)
+        this.z = this.z == 0 ? 0 : (1 / this.z)
+        return this
+    }
+
+    normalize() {
+        return this.divS(this.length() || 1)
+    }
+    
+	dot(v) {
+		return this.x * v.x + this.y * v.y + this.z * v.z;
+	}
+    
+    length() {
+		return Math.sqrt(this.x * this.x + this.y * this.y + this.z * this.z);
+	}
+
+}
\ No newline at end of file