From 1d2d814be76c91ad7b4a4e57c9be41cdefd47903 Mon Sep 17 00:00:00 2001
From: fdai7322 <christoph-anton.schwierz@informatik.hs-fulda.de>
Date: Mon, 3 Jun 2024 19:29:49 +0200
Subject: [PATCH] crossproduct
---
src/cg/testing.ts | 16 +++++-----------
src/cg/utils.ts | 10 ++++++++++
2 files changed, 15 insertions(+), 11 deletions(-)
diff --git a/src/cg/testing.ts b/src/cg/testing.ts
index d20e521..60237e1 100644
--- a/src/cg/testing.ts
+++ b/src/cg/testing.ts
@@ -3,29 +3,23 @@ import { vecNormalize } from "./utils";
import { vecLength } from "./utils";
import { vecDotProduct } from "./utils";
import { vecAngle } from "./utils";
+import { vecCrossProduct } from "./utils";
const pg = new Playground();
// Some vectors
const v = [1,0,1]
-const w = [0,0,2]
+const w = [0,2,2]
-const vNormalized = vecNormalize(v);
-const wNormalized = vecNormalize(w);
-
-const dotProduct = vecDotProduct(v, w);
-const normalizedDotProduct = vecDotProduct(vNormalized, wNormalized);
+const cp = vecCrossProduct(w, v);
// Visualize
pg.gridXZ(); // Grid
pg.visVector(v,{color:"orange",label:"V"});
pg.visVector(w,{color:"red",label:"W"});
+pg.visVector(cp,{color:"grey",label:"crossproduct"})
console.log("v length:" + vecLength(v));
console.log("w length:" + vecLength(w));
-console.log("dotProduct:" + dotProduct);
-console.log("vnormalized length:" + vecLength(vNormalized));
-console.log("wnormalized length:" + vecLength(wNormalized));
-console.log("normalizedDotProduct:" + normalizedDotProduct);
-console.log("angle v w:" + vecAngle(v, w));
\ No newline at end of file
+console.log("normalized dotProduct:" + vecDotProduct(vecNormalize(v), vecNormalize(w)));
diff --git a/src/cg/utils.ts b/src/cg/utils.ts
index 9582fe4..fc005a4 100644
--- a/src/cg/utils.ts
+++ b/src/cg/utils.ts
@@ -62,4 +62,14 @@ export function vecAngle(vecOne: Array<number>, vecTwo: Array<number>){
let degrees = radiant * 180 / Math.PI;
return degrees;
}
+
+export function vecCrossProduct(vecOne: Array<number>, vecTwo: Array<number>){
+ let crossProduct : Array<number> = new Array;
+
+ crossProduct[0] = vecOne[1]*vecTwo[2] - vecOne[2]*vecTwo[1];
+ crossProduct[1] = vecOne[2]*vecTwo[0] - vecOne[0]*vecTwo[2];
+ crossProduct[2] = vecOne[0]*vecTwo[1] - vecOne[1]*vecTwo[0];
+
+ return crossProduct;
+}
//
\ No newline at end of file
--
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