@Override
public void subtract(Vector v) {
verifyVectorSizesMatch(this, v);
for (int i = 0; i < getSize(); i++) {
setValue(i, this.getValue(i) - v.getValue(i));
}
}
@Override
public float dotProduct(Vector v) {
verifyVectorSizesMatch(this, v);
float dotProduct = 0.0f;
for (int i = 0; i < getSize(); i++) {
dotProduct += this.getValue(i) * v.getValue(i);
}
return dotProduct;
}
@Override
public void run() {
float temp;
for (int i = startIndex; i <= endIndex; i++) {
temp = 0.0f;
for (int j : m.getNonZeroRowIndecies(i)) {
temp += getValue(j) * m.getValue(i, j);
}
result.setValue(i, temp);
}
cdl.countDown();
}
private boolean check(float px, float py) {
Vector p = new Vector(px, py);
int v1 = (int) p.subtract(a).cross(b.subtract(a));
int v2 = (int) p.subtract(b).cross(c.subtract(b));
int v3 = (int) p.subtract(c).cross(d.subtract(c));
int v4 = (int) p.subtract(d).cross(a.subtract(d));
if (v1 <= 0 && v2 <= 0 && v3 <= 0 && v4 <= 0) {
return true;
} else {
return false;
}
}
@Override
public void draw() {
// draw the rectangle surrounding us.
Configuration.getDisplayModel().drawRectangle(new Vector(100, 100), new Vector(200, 200));
// Draw the rectangle to indicate the P node.
Configuration.getDisplayModel().drawRectangle(_p.subtract(new Vector(3, 3)), new Vector(6, 6));
for (int x = 0; x < 600; x = x + 5) {
for (int y = 0; y < 600; y = y + 5) {
if (check(x, y)) {
// if it is inside the block, draw some shit
Configuration.getDisplayModel().drawRectangle(new Vector(x, y), new Vector(5, 5));
}
}
}
}
private void verifyVectorSizesMatch(Vector v1, Vector v2) {
if (v1.getSize() != v2.getSize()) {
throw new IllegalArgumentException("The vectors must be of the same size");
}
}
@Override
public void mouseMoved(int mouseX, int mouseY) {
// move our object.
_p.X = mouseX;
_p.Y = mouseY;
}
@Override
public void step() {
int val = (int) _p.subtract(b).cross(c.subtract(b));
}