66 lines
2.2 KiB
Java
66 lines
2.2 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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public Vertex[] vertices;
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public Vertex[] vertexNormals;
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public TextureCoordinate[] textureCoordinates;
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public boolean invertNormal = false;
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public int glDrawingMode;
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public Vec3 getFaceNormal() {
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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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return v1.crossProduct(v2).normalize();
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}
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public void render(Tessellator tessellator, float scale) {
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this.render(tessellator, 0F, scale);
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}
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public void render(Tessellator tessellator, float textureOffset, float scale) {
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tessellator.startDrawing(glDrawingMode);
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tessellator.setNormal((float) getFaceNormal().xCoord, (float) getFaceNormal().yCoord, (float) getFaceNormal().zCoord);
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float averageU = 0F;
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float averageV = 0F;
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for (int i = 0; i < textureCoordinates.length; ++i) {
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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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float offsetU, offsetV;
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for (int i = 0; i < vertices.length; ++i) {
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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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offsetU = -offsetU;
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}
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if (textureCoordinates[i].v > averageV) {
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offsetV = -offsetV;
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}
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tessellator.addVertexWithUV(vertices[i].x * scale, vertices[i].y * scale, vertices[i].z * scale, textureCoordinates[i].u + offsetU, textureCoordinates[i].v + offsetV);
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}
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tessellator.draw();
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}
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}
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