From 847962910f0bff071f3bf07c9abb87764fb6cac3 Mon Sep 17 00:00:00 2001
From: claude-bot <claude@ancap.in.ua>
Date: Mon, 13 Jul 2026 12:40:03 +0000
Subject: Import aap/librw @ master

Snapshot for re3/reVC vendoring, per @lzcnt.
Source: https://github.com/aap/librw (master).
---
 tools/im3d/im3d.cpp | 138 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 138 insertions(+)
 create mode 100644 tools/im3d/im3d.cpp

(limited to 'tools/im3d/im3d.cpp')

diff --git a/tools/im3d/im3d.cpp b/tools/im3d/im3d.cpp
new file mode 100644
index 0000000..4588bc1
--- /dev/null
+++ b/tools/im3d/im3d.cpp
@@ -0,0 +1,138 @@
+#include <rw.h>
+#include <skeleton.h>
+
+#include "im3d.h"
+
+bool Im3DColored = true;
+bool Im3DTextured;
+
+rw::int32 Im3DPrimType;
+
+rw::RGBA SolidWhite = {255, 255, 255, 255};
+rw::RGBA SolidBlack = {0, 0, 0, 255};
+rw::RGBA SolidRed = {200, 64, 64, 255};
+rw::RGBA SolidGreen = {64, 200, 64, 255};
+rw::RGBA SolidBlue = {64, 64, 200, 255};
+rw::RGBA SolidYellow = {200, 200, 64, 255};
+rw::RGBA SolidPurple = {200, 64, 200, 255};
+rw::RGBA SolidCyan = {64, 200, 200, 255};
+
+rw::Matrix *Im3DMatrix;
+rw::Texture *Im3DTexture;
+
+void
+Im3DInitialize(void)
+{
+	Im3DMatrix = rw::Matrix::create();
+	assert(Im3DMatrix);
+
+	rw::Matrix *cameraMatrix = &Camera->getFrame()->matrix;
+	rw::V3d pos = rw::scale(cameraMatrix->at, 6.0f);
+	Im3DMatrix->rotate(&cameraMatrix->up, 30.0f);
+	Im3DMatrix->translate(&pos);
+
+	rw::Image::setSearchPath("files/");
+	Im3DTexture = rw::Texture::read("whiteash", nil);
+
+	LineListCreate();
+	LineListSetColor(!Im3DColored);
+
+	IndexedLineListCreate();
+	IndexedLineListSetColor(!Im3DColored);
+
+	PolyLineCreate();
+	PolyLineSetColor(!Im3DColored);
+
+	IndexedPolyLineCreate();
+	IndexedPolyLineSetColor(!Im3DColored);
+
+	TriListCreate();
+	TriListSetColor(!Im3DColored);
+
+	IndexedTriListCreate();
+	IndexedTriListSetColor(!Im3DColored);
+
+	TriStripCreate();
+	TriStripSetColor(!Im3DColored);
+
+	IndexedTriStripCreate();
+	IndexedTriStripSetColor(!Im3DColored);
+
+	TriFanCreate();
+	TriFanSetColor(!Im3DColored);
+
+	IndexedTriFanCreate();
+	IndexedTriFanSetColor(!Im3DColored);
+}
+
+void
+Im3DTerminate(void)
+{
+	if(Im3DMatrix){
+		Im3DMatrix->destroy();
+		Im3DMatrix = nil;
+	}
+
+	if(Im3DTexture){
+		Im3DTexture->destroy();
+		Im3DTexture = nil;
+	}
+}
+
+void
+Im3DRender(void)
+{
+	rw::SetRenderState(rw::ZTESTENABLE, 1);
+	rw::SetRenderState(rw::ZWRITEENABLE, 1);
+	rw::SetRenderState(rw::SRCBLEND, rw::BLENDONE);
+	rw::SetRenderState(rw::DESTBLEND, rw::BLENDZERO);
+	rw::SetRenderState(rw::TEXTUREFILTER, rw::Texture::FilterMode::LINEAR);
+	rw::SetRenderState(rw::CULLMODE, rw::CULLBACK);
+
+	rw::uint32 flags;
+	if(Im3DTextured){
+		rw::SetRenderStatePtr(rw::TEXTURERASTER, Im3DTexture->raster);
+		flags = rw::im3d::VERTEXUV | rw::im3d::ALLOPAQUE;
+	}else{
+		rw::SetRenderStatePtr(rw::TEXTURERASTER, nil);
+		flags = rw::im3d::ALLOPAQUE;
+	}
+
+	switch(Im3DPrimType){
+	case 0: LineListRender(Im3DMatrix, flags); break;
+	case 1: IndexedLineListRender(Im3DMatrix, flags); break;
+	case 2: PolyLineRender(Im3DMatrix, flags); break;
+	case 3: IndexedPolyLineRender(Im3DMatrix, flags); break;
+	case 4: TriListRender(Im3DMatrix, flags); break;
+	case 5: IndexedTriListRender(Im3DMatrix, flags); break;
+	case 6: TriStripRender(Im3DMatrix, flags); break;
+	case 7: IndexedTriStripRender(Im3DMatrix, flags); break;
+	case 8: TriFanRender(Im3DMatrix, flags); break;
+	case 9: IndexedTriFanRender(Im3DMatrix, flags); break;
+	}
+}
+
+void
+Im3DRotate(float xAngle, float yAngle)
+{
+	rw::Matrix *cameraMatrix = &Camera->getFrame()->matrix;
+	rw::V3d pos = Im3DMatrix->pos;
+
+	pos = rw::scale(pos, -1.0f);
+	Im3DMatrix->translate(&pos);
+
+	Im3DMatrix->rotate(&cameraMatrix->up, xAngle);
+	Im3DMatrix->rotate(&cameraMatrix->right, yAngle);
+
+	pos = rw::scale(pos, -1.0f);
+	Im3DMatrix->translate(&pos);
+}
+
+void
+Im3DTranslateZ(float zDelta)
+{
+	rw::Matrix *cameraMatrix = &Camera->getFrame()->matrix;
+	rw::V3d delta = rw::scale(cameraMatrix->at, zDelta);
+	Im3DMatrix->translate(&delta);
+}
+
-- 
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