nothing works

client/renderer/math.ts

@@ -1,6 +1,7 @@
-export function perspective(out: Float32Array, fov: number, aspect: number, near: number, far: number) {
+import { camera } from "./core.ts";
+
+export function mat4_perspective(out: Float32Array, fov: number, aspect: number, near: number, far: number) {
 	const f = 1 / Math.tan(fov / 2);
-	const nf = 1 / (near - far);
 
 	out[0] = f / aspect;
 	out[1] = 0;
@@ -14,11 +15,70 @@ export function perspective(out: Float32Array, fov: number, aspect: number, near
 
 	out[8] = 0;
 	out[9] = 0;
-	out[10] = (far + near) * nf;
+	out[10] = -(far + near) / (far - near);
 	out[11] = -1;
 
 	out[12] = 0;
 	out[13] = 0;
-	out[14] = (2 * far * near) * nf;
+	out[14] = -(2 * far * near) / (far - near);
 	out[15] = 0;
 }
+
+export function mat4_view(out: Float32Array) {
+	const cx = camera.x;
+	const cy = camera.y;
+	const cz = camera.z;
+
+	const yaw = camera.yaw;
+	const pitch = camera.pitch;
+
+	const cosY = Math.cos(yaw);
+	const sinY = Math.sin(yaw);
+	const cosP = Math.cos(pitch);
+	const sinP = Math.sin(pitch);
+
+	const fx = cosP * sinY;
+	const fy = sinP;
+	const fz = cosP * cosY;
+
+	const rx = cosY;
+	const rz = -sinY;
+
+	const ux = -sinP * sinY;
+	const uy = cosP;
+	const uz = -sinP * cosY;
+
+	out[0] = rx;
+	out[1] = ux;
+	out[2] = -fx;
+	out[3] = 0;
+
+	out[4] = 0;
+	out[5] = uy;
+	out[6] = -fy;
+	out[7] = 0;
+
+	out[8] = rz;
+	out[9] = uz;
+	out[10] = -fz;
+	out[11] = 0;
+
+	out[12] = -(rx * cx + rz * cz);
+	out[13] = -(ux * cx + uy * cy + uz * cz);
+	out[14] = fx * cx + fy * cy + fz * cz;
+	out[15] = 1;
+}
+
+export function mat4_mul(out: Float32Array, a: Float32Array, b: Float32Array) {
+	for (let i = 0; i < 4; i++) {
+		const ai0 = a[i];
+		const ai1 = a[i + 4];
+		const ai2 = a[i + 8];
+		const ai3 = a[i + 12];
+
+		out[i] = ai0 * b[0] + ai1 * b[1] + ai2 * b[2] + ai3 * b[3];
+		out[i + 4] = ai0 * b[4] + ai1 * b[5] + ai2 * b[6] + ai3 * b[7];
+		out[i + 8] = ai0 * b[8] + ai1 * b[9] + ai2 * b[10] + ai3 * b[11];
+		out[i + 12] = ai0 * b[12] + ai1 * b[13] + ai2 * b[14] + ai3 * b[15];
+	}
+}