From dd61d91b77481ffcbef5000ad789f52826300239 Mon Sep 17 00:00:00 2001
From: Forest Belton <forest@homolo.gy>
Date: Mon, 18 Oct 2021 18:20:11 -0400
Subject: [PATCH] FUCK YOU GL

---
 lib/render/gat.ts | 52 +++++++++++++++++++++++++----------------------
 1 file changed, 28 insertions(+), 24 deletions(-)

diff --git a/lib/render/gat.ts b/lib/render/gat.ts
index bb76461..716ee84 100644
--- a/lib/render/gat.ts
+++ b/lib/render/gat.ts
@@ -13,10 +13,10 @@ const UP = vec3.fromValues(0, 1, 0);
 
 const printMat4 = (name: string, m: mat4) => {
   console.log(name);
-  console.log([m[0], m[1], m[2], m[3]]);
-  console.log([m[4], m[5], m[6], m[7]]);
-  console.log([m[8], m[9], m[10], m[11]]);
-  console.log([m[12], m[13], m[14], m[15]]);
+  console.log([m[0], m[4], m[8], m[12]]);
+  console.log([m[1], m[5], m[9], m[13]]);
+  console.log([m[2], m[6], m[10], m[11]]);
+  console.log([m[3], m[7], m[14], m[15]]);
 };
 
 // Function to download data to a file
@@ -86,26 +86,30 @@ export const renderGAT = (gl: WebGLRenderingContext, gat: GAT) => {
   mat4.rotateX(view, view, -Math.PI / 2);
   // mat4.lookAt(view, camera, center, UP);
 
+  const modelview = model;
+  mat4.multiply(modelview, model, view);
+
   const perspective = mat4.create();
   const aspect = gl.canvas.clientWidth / gl.canvas.clientHeight;
-  mat4.perspective(perspective, Math.PI / 4, aspect, 0.5, 2000);
+  mat4.perspective(perspective, Math.PI / 4, aspect, -10, -2000);
 
   const matrix = mat4.create();
-  mat4.multiply(matrix, view, model);
-  printMat4("view * model", matrix);
-  mat4.multiply(matrix, perspective, matrix);
+  mat4.multiply(matrix, modelview, perspective);
 
   const matrixLoc = gl.getUniformLocation(program, "u_matrix");
   gl.uniformMatrix4fv(matrixLoc, false, matrix);
 
   printMat4("model", model);
   printMat4("view", view);
+  printMat4("model + view", modelview);
   printMat4("projection", perspective);
-  printMat4("matrix", matrix);
+  printMat4("model + view + projection", matrix);
 
   const origin = vec4.create();
+  vec4.transformMat4(origin, ORIGIN, modelview);
+  console.log("origin (modelview)", origin);
   vec4.transformMat4(origin, ORIGIN, matrix);
-  console.log("origin", origin);
+  console.log("origin (projection)", origin);
 
   const vertices: number[] = [];
 
@@ -132,20 +136,20 @@ export const renderGAT = (gl: WebGLRenderingContext, gat: GAT) => {
 
   // download(exportObj(vertices), "heightmap.obj", "text/plain");
 
-  // let failCount = 0;
-  // for (let i = 0; i < vertices.length / 3; ++i) {
-  //   const vec = vec3.fromValues(vertices[i], vertices[i + 1], vertices[i + 2]);
-  //   const result = checkPixelCoord(vec, matrix);
-  //   if (result) {
-  //     if (failCount < 10) {
-  //       // console.log(vec);
-  //       // console.log(result);
-  //     }
-  //     failCount++;
-  //   }
-  // }
-  // console.log("failCount", failCount);
-  // console.log("totalCount", vertices.length / 3);
+  let failCount = 0;
+  for (let i = 0; i < vertices.length / 3; ++i) {
+    const vec = vec3.fromValues(vertices[i], vertices[i + 1], vertices[i + 2]);
+    const result = checkPixelCoord(vec, matrix);
+    if (result) {
+      if (failCount < 10) {
+        console.log(vec);
+        console.log(result);
+      }
+      failCount++;
+    }
+  }
+  console.log("failCount", failCount);
+  console.log("totalCount", vertices.length / 3);
 
   const vertexBuffer = gl.createBuffer();
   gl.bindBuffer(gl.ARRAY_BUFFER, vertexBuffer);