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package ru.olamedia.geom;
public class SimpleQuadMesh extends Mesh {
public SimpleQuadMesh(int size) {
super(size * 4);
}
private void addBottomLeftBackVertex() {
setPoint3f(-0.5f, -0.5f, -0.5f);
}
private void addBottomLeftFrontVertex() {
setPoint3f(-0.5f, -0.5f, 0.5f);
}
private void addBottomRightBackVertex() {
setPoint3f(0.5f, -0.5f, -0.5f);
}
private void addBottomRightFrontVertex() {
setPoint3f(0.5f, -0.5f, 0.5f);
}
private void addTopLeftBackVertex() {
setPoint3f(-0.5f, 0.5f, -0.5f);
}
private void addTopLeftFrontVertex() {
setPoint3f(-0.5f, 0.5f, 0.5f);
}
private void addTopRightBackVertex() {
setPoint3f(0.5f, 0.5f, -0.5f);
}
private void addTopRightFrontVertex() {
setPoint3f(0.5f, 0.5f, 0.5f);
}
public void addFrontQuad() {
// triangle strip: И
setUV(0, 1);
addTopLeftFrontVertex(); // top left
setUV(0, 0);
addBottomLeftFrontVertex(); // bottom left
setUV(1, 0);
addBottomRightFrontVertex(); // bottom right
setUV(1, 1);
addTopRightFrontVertex(); // top right
}
public void addBackQuad() {
// triangle strip: И
setUV(0, 1);
addTopRightBackVertex();
setUV(0, 0);
addBottomRightBackVertex();
setUV(1, 0);
addBottomLeftBackVertex();
setUV(1, 1);
addTopLeftBackVertex();
}
public void addLeftQuad() {
// triangle strip: И
setUV(0, 1);
addTopLeftBackVertex();
setUV(0, 0);
addBottomLeftBackVertex();
setUV(1, 0);
addBottomLeftFrontVertex();
setUV(1, 1);
addTopLeftFrontVertex();
}
public void addRightQuad() {
// triangle strip: И
setUV(0, 1);
addTopRightFrontVertex();
setUV(0, 0);
addBottomRightFrontVertex();
setUV(1, 0);
addBottomRightBackVertex();
setUV(1, 1);
addTopRightBackVertex();
}
public void addTopQuad() {
// triangle strip: И
setUV(0, 0);
addTopLeftBackVertex();
setUV(0, 1);
addTopLeftFrontVertex();
setUV(1, 1);
addTopRightFrontVertex();
setUV(1, 0);
addTopRightBackVertex();
}
public void addBottomQuad() {
// triangle strip: И
setUV(0, 0);
addBottomLeftFrontVertex();
setUV(0, 1);
addBottomLeftBackVertex();
setUV(1, 1);
addBottomRightBackVertex();
setUV(1, 0);
addBottomRightFrontVertex();
}
}
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