84 lines
2.5 KiB
Java
84 lines
2.5 KiB
Java
package net.minecraftforge.client.model.obj;
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import net.minecraft.client.renderer.Tessellator;
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import net.minecraft.util.Vec3;
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import cpw.mods.fml.relauncher.Side;
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import cpw.mods.fml.relauncher.SideOnly;
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@SideOnly(Side.CLIENT)
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public class Face
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{
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public Vertex[] vertices;
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public Vertex[] vertexNormals;
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public Vertex faceNormal;
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public TextureCoordinate[] textureCoordinates;
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public void addFaceForRender(Tessellator tessellator)
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{
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addFaceForRender(tessellator, 0.0005F);
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}
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public void addFaceForRender(Tessellator tessellator, float textureOffset)
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{
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if (faceNormal == null)
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{
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faceNormal = this.calculateFaceNormal();
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}
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tessellator.setNormal(faceNormal.x, faceNormal.y, faceNormal.z);
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float averageU = 0F;
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float averageV = 0F;
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if (textureCoordinates.length != 0)
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{
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for (int i = 0; i < textureCoordinates.length; ++i)
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{
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averageU += textureCoordinates[i].u;
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averageV += textureCoordinates[i].v;
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}
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averageU = averageU / textureCoordinates.length;
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averageV = averageV / textureCoordinates.length;
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}
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float offsetU, offsetV;
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for (int i = 0; i < vertices.length; ++i)
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{
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if (textureCoordinates.length != 0)
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{
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offsetU = textureOffset;
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offsetV = textureOffset;
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if (textureCoordinates[i].u > averageU)
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{
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offsetU = -offsetU;
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}
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if (textureCoordinates[i].v > averageV)
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{
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offsetV = -offsetV;
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}
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tessellator.addVertexWithUV(vertices[i].x, vertices[i].y, vertices[i].z, textureCoordinates[i].u + offsetU, textureCoordinates[i].v + offsetV);
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}
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else
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{
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tessellator.addVertex(vertices[i].x, vertices[i].y, vertices[i].z);
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}
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}
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}
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public Vertex calculateFaceNormal()
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{
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Vec3 v1 = Vec3.createVectorHelper(vertices[1].x - vertices[0].x, vertices[1].y - vertices[0].y, vertices[1].z - vertices[0].z);
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Vec3 v2 = Vec3.createVectorHelper(vertices[2].x - vertices[0].x, vertices[2].y - vertices[0].y, vertices[2].z - vertices[0].z);
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Vec3 normalVector = null;
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normalVector = v1.crossProduct(v2).normalize();
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return new Vertex((float) normalVector.xCoord, (float) normalVector.yCoord, (float) normalVector.zCoord);
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}
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}
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