From 2234e9ed6ebe57f4c190808c9063cd69da4fcb16 Mon Sep 17 00:00:00 2001
From: Mike Lester <themikelester@gmail.com>
Date: Fri, 27 Dec 2024 13:23:34 -0700
Subject: [PATCH] Hackily set up new ortho view and proj matrices within
 d_a_title

---
 src/Common/JSYSTEM/J2Dv1.ts |  2 +-
 src/ZeldaWindWaker/d_a.ts   | 24 ++++++++++++++++++++++++
 2 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/src/Common/JSYSTEM/J2Dv1.ts b/src/Common/JSYSTEM/J2Dv1.ts
index d92f5023f..cd64e17dd 100644
--- a/src/Common/JSYSTEM/J2Dv1.ts
+++ b/src/Common/JSYSTEM/J2Dv1.ts
@@ -57,7 +57,7 @@ enum J2DUVBinding {
 
 // TODO: Move and reorganize
 export class J2DGrafContext {
-    private sceneParams = new SceneParams();
+    public sceneParams = new SceneParams();
     public aspectRatio: number;
 
     constructor(device: GfxDevice, x: number, y: number, w: number, h: number, far: number, near: number) {
diff --git a/src/ZeldaWindWaker/d_a.ts b/src/ZeldaWindWaker/d_a.ts
index ce7e3db49..8b90c9a58 100644
--- a/src/ZeldaWindWaker/d_a.ts
+++ b/src/ZeldaWindWaker/d_a.ts
@@ -38,6 +38,7 @@ import { fopAc_ac_c, fopAcIt_JudgeByID, fopAcM_create, fopAcM_prm_class } from "
 import { dProcName_e } from "./d_procname.js";
 import { TextureMapping } from "../TextureHolder.js";
 import { calcANK1JointAnimationTransform } from "../Common/JSYSTEM/J3D/J3DGraphAnimator.js";
+import { J2DGrafContext } from "../Common/JSYSTEM/J2Dv1.js";
 
 // Framework'd actors
 
@@ -5788,6 +5789,22 @@ class d_a_title extends fopAc_ac_c {
     }
 
     public override draw(globals: dGlobals, renderInstManager: GfxRenderInstManager, viewerInput: ViewerRenderInput): void {
+        let oldViewMtx = globals.camera.viewFromWorldMatrix;
+        let oldProjMtx = globals.camera.clipFromViewMatrix;
+
+        // From mDoGph_Painter(). Set up new view and ortho proj matrices. 
+        // TODO: This should be set by the Opa2D draw list
+        const adjustedWidth = 480 * viewerInput.backbufferWidth / viewerInput.backbufferHeight;
+        mat4.fromTranslation(scratchMat4a, [adjustedWidth * 0.5, 240, 1000]);
+        mDoMtx_ZrotM(scratchMat4a, -0x8000);
+        globals.camera.viewFromWorldMatrix = scratchMat4a;
+        const orthoCtx = new J2DGrafContext(globals.sceneContext.device, -9.0, -21.0, adjustedWidth + 10, 503.0, 100000.0, -100000.0);
+        globals.camera.clipFromViewMatrix = orthoCtx.sceneParams.u_Projection;
+        mat4.mul(globals.camera.clipFromWorldMatrix, globals.camera.clipFromViewMatrix, globals.camera.viewFromWorldMatrix);
+        globals.camera.frustum.updateClipFrustum(globals.camera.clipFromWorldMatrix, globals.camera.clipSpaceNearZ);
+        const template = renderInstManager.pushTemplate();
+        orthoCtx.setOnRenderInst(template);
+
         // TODO: This should be a global immediate light set by the Opa2D draw list
         const light = this.modelShip.getGXLightReference(0);
         light.Position = [-35000.0, 0.0, -30000.0];
@@ -5799,6 +5816,13 @@ class d_a_title extends fopAc_ac_c {
             this.bpkShip.entry(this.modelShip);
             mDoExt_modelUpdateDL(globals, this.modelShip, renderInstManager, viewerInput, globals.dlst.ui);
         }
+
+        // TODO: This should be set by the Opa2D draw list
+        globals.camera.viewFromWorldMatrix = oldViewMtx;
+        globals.camera.clipFromViewMatrix = oldProjMtx;
+        mat4.mul(globals.camera.clipFromWorldMatrix, globals.camera.clipFromViewMatrix, globals.camera.viewFromWorldMatrix);
+        globals.camera.frustum.updateClipFrustum(globals.camera.clipFromWorldMatrix, globals.camera.clipSpaceNearZ);
+        renderInstManager.popTemplate();
     }
 
     private proc_init2D(globals: dGlobals) {