lots of progress. semi-working Wavefront OBJ exporter

1 files changed, 234 insertions, 0 deletions

diff --git a/NW4RTools/VertexSettings.cs b/NW4RTools/VertexSettings.cs
new file mode 100644
index 0000000..5eac02a
--- /dev/null
+++ b/NW4RTools/VertexSettings.cs
@@ -0,0 +1,234 @@
+using System;
+
+namespace NW4RTools {
+	public struct GXIndexedVertex {
+		public int Position;
+		public int Normal;
+
+		public int[] Colors;
+		public int[] TexCoords;
+
+
+
+		public void LoadFrom(InputStream ins, VertexSettings vs) {
+			if (vs.PNMatrixIndexExists)
+				throw new NotImplementedException();
+			if (vs.TexCoordMatrixIndexExists[0])
+				throw new NotImplementedException();
+			// won't bother with the rest
+
+			switch (vs.PositionDesc) {
+			case VertexSettings.DescType.Direct:
+				throw new NotImplementedException();
+			case VertexSettings.DescType.None:
+				throw new NotImplementedException();
+			case VertexSettings.DescType.Index8:
+				Position = ins.ReadByte();
+				if (Position == 0xFF)
+					Position = -1;
+				break;
+			case VertexSettings.DescType.Index16:
+				Position = ins.ReadUInt16();
+				if (Position == 0xFFFF)
+					Position = -1;
+				break;
+			}
+
+			// not sure how to detect NBT3 yet
+			switch (vs.NormalDesc) {
+			case VertexSettings.DescType.Direct:
+				throw new NotImplementedException();
+			case VertexSettings.DescType.None:
+				Normal = -1;
+				break;
+			case VertexSettings.DescType.Index8:
+				Normal = ins.ReadByte();
+				if (Normal == 0xFF)
+					Normal = -1;
+				break;
+			case VertexSettings.DescType.Index16:
+				Normal = ins.ReadUInt16();
+				if (Normal == 0xFFFF)
+					Normal = -1;
+				break;
+			}
+			
+			Colors = new int[2];
+			
+			for (int i = 0; i < 2; i++) {
+				switch (vs.ColorDesc[i]) {
+				case VertexSettings.DescType.Direct:
+					throw new NotImplementedException();
+				case VertexSettings.DescType.None:
+					Colors[i] = -1;
+					break;
+				case VertexSettings.DescType.Index8:
+					Colors[i] = ins.ReadByte();
+					if (Colors[i] == 0xFF)
+						Colors[i] = -1;
+					break;
+				case VertexSettings.DescType.Index16:
+					Colors[i] = ins.ReadUInt16();
+					if (Colors[i] == 0xFFFF)
+						Colors[i] = -1;
+					break;
+				}
+			}
+
+			TexCoords = new int[8];
+
+			for (int i = 0; i < 8; i++) {
+				switch (vs.TexCoordDesc[i]) {
+				case VertexSettings.DescType.Direct:
+					throw new NotImplementedException();
+				case VertexSettings.DescType.None:
+					TexCoords[i] = -1;
+					break;
+				case VertexSettings.DescType.Index8:
+					TexCoords[i] = ins.ReadByte();
+					if (TexCoords[i] == 0xFF)
+						TexCoords[i] = -1;
+					break;
+				case VertexSettings.DescType.Index16:
+					TexCoords[i] = ins.ReadUInt16();
+					if (TexCoords[i] == 0xFFFF)
+						TexCoords[i] = -1;
+					break;
+				}
+			}
+		}
+	}
+
+
+
+	public class VertexSettings {
+		public enum DescType {
+			None,
+			Direct,
+			Index8,
+			Index16
+		}
+
+		public enum CompCount {
+			Position2 = 0,
+			Position3 = 1,
+			Normal3 = 0,
+			NBT = 1,
+			NBT3 = 2,
+			Color3 = 0,
+			Color4 = 1,
+			TexCoord1 = 0,
+			TexCoord2 = 1
+		}
+
+		public enum CompType {
+			UInt8 = 0,
+			Int8 = 1,
+			UInt16 = 2,
+			Int16 = 3,
+			Float32 = 4
+		}
+
+
+		public bool PNMatrixIndexExists;
+		public bool[] TexCoordMatrixIndexExists;
+		public DescType PositionDesc, NormalDesc;
+		public DescType[] ColorDesc, TexCoordDesc;
+
+		public CompCount PositionCount, NormalCount;
+		public CompCount[] ColorCount, TexCoordCount;
+
+		public CompType PositionFormat, NormalFormat;
+		public CompType[] ColorFormat, TexCoordFormat;
+
+		public byte PositionFrac;
+		public byte[] TexCoordFrac;
+
+
+
+		public VertexSettings() {
+			TexCoordMatrixIndexExists = new bool[8];
+
+			ColorDesc = new DescType[2];
+			TexCoordDesc = new DescType[8];
+
+			ColorCount = new CompCount[2];
+			TexCoordCount = new CompCount[8];
+
+			ColorFormat = new CompType[2];
+			TexCoordFormat = new CompType[8];
+
+			TexCoordFrac = new byte[8];
+		}
+
+
+		public void SetDesc(UInt32 val1, UInt32 val2) {
+			PNMatrixIndexExists = ((val1 & 1) != 0);
+
+			for (int i = 0; i < 8; i++)
+				TexCoordMatrixIndexExists[i] = ((val1 & (2 << i)) != 0);
+
+			PositionDesc = (DescType)((val1 & 0x600) >> 9);
+			NormalDesc = (DescType)((val1 & 0x1800) >> 11);
+			ColorDesc[0] = (DescType)((val1 & 0x6000) >> 13);
+			ColorDesc[1] = (DescType)((val1 & 0x18000) >> 15);
+
+			for (int i = 0; i < 8; i++)
+				TexCoordDesc[i] = (DescType)((val2 & (3 << (i * 2))) >> (i * 2));
+		}
+
+		public void SetAttrFmt(UInt32 val1, UInt32 val2, UInt32 val3) {
+			PositionCount = (CompCount)(val1 & 1);
+			PositionFormat = (CompType)((val1 & 0xE) >> 3);
+			PositionFrac = (byte)((val1 & 0x1F0) >> 4);
+
+			// note: this field is special
+			bool IsNormalSet = ((val1 & 0x200) != 0);
+			bool UseNormalIndex3 = ((val1 & 0x80000000) != 0);
+			NormalCount = IsNormalSet ? (UseNormalIndex3 ? CompCount.NBT3 : CompCount.NBT) : CompCount.Normal3;
+			NormalFormat = (CompType)((val1 & 0x1C00) >> 10);
+			
+			ColorCount[0] = (CompCount)((val1 & 0x2000) >> 13);
+			ColorFormat[0] = (CompType)((val1 & 0x1C000) >> 14);
+			
+			ColorCount[1] = (CompCount)((val1 & 0x20000) >> 17);
+			ColorFormat[1] = (CompType)((val1 & 0x1C0000) >> 18);
+
+			TexCoordCount[0] = (CompCount)((val1 & 0x200000) >> 21);
+			TexCoordFormat[0] = (CompType)((val1 & 0x1C00000) >> 22);
+			TexCoordFrac[0] = (byte)((val1 & 0x3E000000) >> 25);
+
+			// set in various cases, see libogc gx.c for info
+			bool ByteDequant = ((val1 & 0x40000000) != 0);
+			
+			TexCoordCount[1] = (CompCount)(val2 & 0x1);
+			TexCoordFormat[1] = (CompType)((val2 & 0xE) >> 1);
+			TexCoordFrac[1] = (byte)((val2 & 0x1F0) >> 4);
+
+			TexCoordCount[2] = (CompCount)((val2 & 0x200) >> 9);
+			TexCoordFormat[2] = (CompType)((val2 & 0x1C00) >> 10);
+			TexCoordFrac[2] = (byte)((val2 & 0x3E000) >> 13);
+
+			TexCoordCount[3] = (CompCount)((val2 & 0x40000) >> 18);
+			TexCoordFormat[3] = (CompType)((val2 & 0x380000) >> 19);
+			TexCoordFrac[3] = (byte)((val2 & 0x3E000000) >> 22);
+
+			TexCoordCount[4] = (CompCount)((val2 & 0x8000000) >> 27);
+			TexCoordFormat[4] = (CompType)((val2 & 0x70000000) >> 28);
+			TexCoordFrac[4] = (byte)(val3 & 0x1F);
+
+			TexCoordCount[5] = (CompCount)((val3 & 0x20) >> 5);
+			TexCoordFormat[5] = (CompType)((val3 & 0x1C0) >> 6);
+			TexCoordFrac[5] = (byte)((val3 & 0x3E00) >> 9);
+
+			TexCoordCount[6] = (CompCount)((val3 & 0x4000) >> 14);
+			TexCoordFormat[6] = (CompType)((val3 & 0x38000) >> 15);
+			TexCoordFrac[6] = (byte)((val3 & 0x7C0000) >> 18);
+
+			TexCoordCount[7] = (CompCount)((val3 & 0x800000) >> 23);
+			TexCoordFormat[7] = (CompType)((val3 & 0x7000000) >> 24);
+			TexCoordFrac[7] = (byte)((val3 & 0xF8000000) >> 27);
+		}
+	}
+}
+