protected void drawWAll(Color c, IDrawOperation op, Point3D[] wall, int dx, int dy, int dz) {
Point3D a = new Point3D(0, 0, 0);
Point3D b = new Point3D(0, 0, 0);
int[] xs = new int[4];
int[] ys = new int[4];
for (int i = 0; i < 4; i++) {
int j = (i == 3) ? 0 : i + 1;
a.x = wall[i].x + dx;
a.y = wall[i].y + dy;
a.z = wall[i].z + dz;
b.x = wall[j].x + dx;
b.y = wall[j].y + dy;
b.z = wall[j].z + dz;
checkPoint(a);
checkPoint(b);
xs[i] = sx + a.x;
ys[i] = sy - a.y;
}
op.fillPolygone(c, xs, ys, 1.0f);
op.drawPolygone(Color.black, xs, ys, 1.0f);
}
public Point3D getCenterX(int order) {
Point3D point = new Point3D();
Point3D center = new Point3D();
int offset = order * 4;
for (int p = 0; p < 4; p++) {
this.getPoint(p + offset, point);
center.set(center.x() + point.x(), center.y() + point.y(), center.z() + point.z());
}
center.set(center.x() * 0.25, center.y() * 0.25, center.z() * 0.25);
return center;
}
/**
* @param a
* @param b
* @return
*/
public static Point3D fois(Point3D a, double b) {
Point3D c = new Point3D(a.x, a.x, a.x);
c.x = a.x * b;
c.y = a.y * b;
c.z = a.z * b;
return c;
}
/**
* @param a
* @param b
* @return
*/
public static Point3D div(Point3D a, double b) {
Point3D c = new Point3D(a.x, a.x, a.x);
c.x = a.x / b;
c.y = a.y / b;
c.z = a.z / b;
return c;
}
/**
* @param a
* @param b
* @return
*/
public static Point3D plus(Point3D a, Point3D b) {
Point3D c = new Point3D(a.x, a.x, a.x);
c.x = a.x + b.x;
c.y = a.y + b.y;
c.z = a.z + b.z;
return c;
}
/**
* @param a
* @param b
* @return
*/
public static Point3D moins(Point3D a, Point3D b) {
Point3D c = new Point3D((a.x - b.x), (a.y - b.y), (a.z - b.z));
c.x = a.x - b.x;
c.y = a.y - b.y;
c.z = a.z - b.z;
return c;
}
public Point3D update(float time) {
elapsedTime += time;
if (elapsedTime == 0) {
returnPos = pos1;
} else if (elapsedTime >= 10) // traveling to a planet will take 10 seconds
{
returnPos.set(pos4.x, pos4.y, pos4.z);
} else {
float t = elapsedTime / 10f;
returnPos.x =
(1.0f - t) * (1.0f - t) * (1.0f - t) * pos1.x
+ 3 * (1.0f - t) * (1.0f - t) * t * pos2.x
+ 3 * (1.0f - t) * t * t * pos3.x
+ t * t * t * pos4.x;
returnPos.y =
(1.0f - t) * (1.0f - t) * (1.0f - t) * pos1.y
+ 3 * (1.0f - t) * (1.0f - t) * t * pos2.y
+ 3 * (1.0f - t) * t * t * pos3.y
+ t * t * t * pos4.y;
returnPos.z =
(1.0f - t) * (1.0f - t) * (1.0f - t) * pos1.z
+ 3 * (1.0f - t) * (1.0f - t) * t * pos2.z
+ 3 * (1.0f - t) * t * t * pos3.z
+ t * t * t * pos4.z;
}
return returnPos;
}
@Override
public void rotateZ(double angle) {
Point3D point = new Point3D();
for (int p = 0; p < this.meshPoints.length; p += 3) {
point.set(meshPoints[p], meshPoints[p + 1], meshPoints[p + 2]);
point.rotateZ(angle);
meshPoints[p] = (float) point.x();
meshPoints[p + 1] = (float) point.y();
meshPoints[p + 2] = (float) point.z();
}
}
/** Returns XYZ coordinates of the point. Z will be set to 0 if Z is missing. */
Point3D getXYZ() {
if (isEmptyImpl())
throw new GeometryException("This operation should not be performed on an empty geometry.");
Point3D pt = new Point3D();
pt.x = m_attributes[0];
pt.y = m_attributes[1];
if (m_description.hasZ()) pt.z = m_attributes[2];
else pt.z = VertexDescription.getDefaultValue(Semantics.Z);
return pt;
}
@Override
public Point3D convertToCameraCoordinateSystem(Point3D point3D) {
Point3D converted = super.convertToCameraCoordinateSystem(point3D);
double focalLength = cameraSettings.getFocalLength();
double ratio = focalLength / converted.z;
double x = ratio * converted.x;
double y = ratio * converted.y;
double z = converted.z;
converted.x = x;
converted.y = y;
converted.z = z;
return converted;
}
private void checkPoint(Point3D p) {
// double cos = Math.cos(Math.PI/8);
// double sin = Math.sin(Math.PI/8);
// Point3D p2 = new Point3D(0,0,0);
// sur l'axe z
// p2.x = (int) (p.x*cos+p.y*sin);
// p2.y = (int) (-p.x*sin+p.y*cos);
// p2.z = p.z;
// vx = (int) (pointFuite.x*cos+pointFuite.y*sin);
// vy = (int) (-pointFuite.x*sin+pointFuite.y*cos);
// vz = (int) (pointFuite.z);
// p2.x = (int) (p.x*cos-p.z*sin);
// p2.y = (int) (p.y);
// p2.z = (int) (-p.x*sin+p.z*cos);
// p2.x = (int) (p.x);
// p2.y = (int) (p.y*cos-p.z*sin);
// p2.z = (int) (p.y*sin+p.z*cos);
// vx = (int) (pointFuite.x);
// vy = (int) (pointFuite.y*cos-pointFuite.z*sin);
// vz = (int) (pointFuite.y*sin+pointFuite.z*cos);
// double a = (vy-p2.y) / (vx-p2.x);
// double z = Math.min(vz, p2.z);
//
// double var = z / vz;
// double yy = 1 - 1/(1+var*1.5);
// double d = yy * (vx-p2.x);
double a = (vy - p.y) / (vx - p.x);
double z = Math.min(vz, p.z);
double var = z / vz;
double yy = 1 - 1 / (1 + var * 1.5);
double d = yy * (vx - p.x);
// p.x = p2.x;
// p.y = p2.y;
// p.z = p2.z;
p.x += (int) d;
p.y += (int) (a * d);
}
private Color Brightness(Point3D lightPoint, Point3D p1, Point3D p2, Point3D p3, Color c) {
Point3D normal, vec;
normal = new Point3D(0, 0, 0);
vec = new Point3D(0, 0, 0);
normal.setNormal(p1, p2, p3);
vec.x = p1.x - lightPoint.x;
vec.y = p1.y - lightPoint.y;
vec.z = p1.z - lightPoint.z;
double cosa = ((normal.x * vec.x) + (normal.y * vec.y) + (normal.z * vec.z));
cosa /=
(Math.sqrt(normal.x * normal.x + normal.y * normal.y + normal.z * normal.z)
* Math.sqrt(vec.x * vec.x + vec.y * vec.y + vec.z * vec.z));
if (cosa < 0) cosa = 0;
if (cosa > 1) cosa = 1;
float[] hsb = Color.RGBtoHSB(c.getRed(), c.getGreen(), c.getBlue(), null);
return Color.getHSBColor(hsb[0], hsb[1], (float) (hsb[2] + 0.3 * cosa));
}
public Point3D getCenterZ(int order) {
Point3D point = new Point3D();
Point3D center = new Point3D();
int offset = order * 4;
if (order == 0) {
this.getPoint(0, point);
center.set(center.x() + point.x(), center.y() + point.y(), center.z() + point.z());
this.getPoint(1, point);
center.set(center.x() + point.x(), center.y() + point.y(), center.z() + point.z());
this.getPoint(4, point);
center.set(center.x() + point.x(), center.y() + point.y(), center.z() + point.z());
this.getPoint(5, point);
center.set(center.x() + point.x(), center.y() + point.y(), center.z() + point.z());
} else {
this.getPoint(2, point);
center.set(center.x() + point.x(), center.y() + point.y(), center.z() + point.z());
this.getPoint(3, point);
center.set(center.x() + point.x(), center.y() + point.y(), center.z() + point.z());
this.getPoint(6, point);
center.set(center.x() + point.x(), center.y() + point.y(), center.z() + point.z());
this.getPoint(7, point);
center.set(center.x() + point.x(), center.y() + point.y(), center.z() + point.z());
}
center.set(center.x() * 0.25, center.y() * 0.25, center.z() * 0.25);
return center;
}
private void updatePos(double off) {
pos.x -= UNIT * Math.sin(Math.toRadians(rotAngle + off));
pos.z += UNIT * Math.cos(Math.toRadians(rotAngle + off));
}