void rebuildMatrices()
{
if (!needsRebuild)
{
return;
}
needsRebuild = false;
warp_Vector forward, up, right;
forward = warp_Vector.sub(lookat, pos);
up = new warp_Vector(0f, 1f, 0f);
right = warp_Vector.getNormal(up, forward);
up = warp_Vector.getNormal(forward, right);
forward.normalize();
up.normalize();
right.normalize();
normalmatrix = new warp_Matrix(right, up, forward);
normalmatrix.rotate(0, 0, rollfactor);
matrix = normalmatrix.getClone();
matrix.shift(pos.x, pos.y, pos.z);
normalmatrix = normalmatrix.inverse();
matrix = matrix.inverse();
}
public static float angle(warp_Vector a, warp_Vector b)
// returns the angle between 2 vectors
{
a.normalize();
b.normalize();
return(a.x * b.x + a.y * b.y + a.z * b.z);
}
public void project(warp_Matrix vertexProjection, warp_Matrix normalProjection, warp_Camera camera)
// Projects this vertex into camera space
{
pos2 = pos.transform(vertexProjection);
n2 = n.transform(normalProjection);
float fact;
if (camera.isOrthographic)
{
x = (int)(pos2.x * (camera.screenscale / camera.orthoViewWidth) + (camera.screenwidth >> 1));
y = (int)(-pos2.y * (camera.screenscale / camera.orthoViewHeight) + (camera.screenheight >> 1));
}
else
{
fact = camera.screenscale / camera.fovfact / ((pos2.z > 0.1) ? pos2.z : 0.1f);
x = (int)(pos2.x * fact + (camera.screenwidth >> 1));
y = (int)(-pos2.y * fact + (camera.screenheight >> 1));
}
z = (int)(65536f * pos2.z);
sw = -(pos2.z);
nx = (int)(n2.x * 127 + 127);
ny = (int)(n2.y * 127 + 127);
if (parent.material == null)
{
return;
}
if (parent.material.texture == null)
{
return;
}
tx = (int)((float)parent.material.texture.width * u);
ty = (int)((float)parent.material.texture.height * v);
}
public warp_Vertex(warp_Vector ppos, warp_Vector norm, float u, float v)
{
pos = ppos;
n = norm;
this.u = u;
this.v = v;
}
public warp_Vector getDimension()
// Returns the x,y,z - Dimension of this object
{
warp_Vector max = maximum();
warp_Vector min = minimum();
return(new warp_Vector(max.x - min.x, max.y - min.y, max.z - min.z));
}
public warp_Vector getCenter()
// Returns the center of this object
{
warp_Vector max = maximum();
warp_Vector min = minimum();
return(new warp_Vector((max.x + min.x) / 2, (max.y + min.y) / 2, (max.z + min.z) / 2));
}
public static warp_Vector scale(float f, warp_Vector a)
// substracts 2 vectors
{
a.x *= f;
a.y *= f;
a.z *= f;
return(a); // maybe should return a new vector?
}
public static warp_Vector add(warp_Vector a, warp_Vector b)
// adds 2 vectors
{
a.x += b.x;
a.y += b.y;
a.z += b.z;
return(a);
}
public static warp_Vector add(warp_Vector a, warp_Vector b)
// adds 2 vectors
{
a.x += b.x;
a.y += b.y;
a.z += b.z;
return(a); // maybe should return a new vector?
}
public static warp_Vector scale(float f, warp_Vector a)
// substracts 2 vectors
{
a.x *= f;
a.y *= f;
a.z *= f;
return(a);
}
public static warp_Vector sub(warp_Vector a, warp_Vector b)
// substracts 2 vectors
{
a.x -= b.x;
a.y -= b.y;
a.z -= b.z;
return(a); // maybe should return a new vector?
}
public static warp_Vector sub(warp_Vector a, warp_Vector b)
// substracts 2 vectors
{
a.x -= b.x;
a.y -= b.y;
a.z -= b.z;
return(a);
}
public static warp_Object CONE(float height, float radius, int segments)
{
warp_Vector[] path = new warp_Vector[4];
float h = height / 2;
path [0] = new warp_Vector(0, h, 0);
path [1] = new warp_Vector(radius, -h, 0);
path [2] = new warp_Vector(radius, -h, 0);
path [3] = new warp_Vector(0, -h, 0);
return(ROTATIONOBJECT(path, segments));
}
public static warp_Vector vectorProduct(warp_Vector a, warp_Vector b, warp_Vector c)
// returns (b-a) x (c-a)
{
float ax = b.x - a.x;
float ay = b.y - a.y;
float az = b.z - a.z;
float bx = c.x - a.x;
float by = c.y - a.y;
float bz = c.z - a.z;
return(new warp_Vector(ay * bz - by * az, az * bx - bz * ax, ax * by - bx * ay));
}
public void detach()
// Centers the object in its coordinate system
// The offset from origin to object center will be transfered to the matrix,
// so your object actually does not move.
// Usefull if you want prepare objects for self rotation.
{
warp_Vector center = getCenter();
for (int i = 0; i < vertices; i++)
{
fastvertex [i].pos.x -= center.x;
fastvertex [i].pos.y -= center.y;
fastvertex [i].pos.z -= center.z;
}
shift(center);
}
public void regenerateNormal()
{
warp_Vector wn;
float rgnx = 0f;
float rgny = 0f;
float rgnz = 0f;
for (int i = 0; i < neighbor.Count; i++)
{
wn = neighbor [i].getWeightedNormal();
rgnx += wn.x;
rgny += wn.y;
rgnz += wn.z;
}
n = new warp_Vector(rgnx, rgny, rgnz).normalize();
}
public static warp_Object TORUSKNOT(float p, float q, float r_tube, float r_out, float r_in, float h, int segments, int steps)
{
float x, y, z, r, t, theta;
warp_Vector[] path = new warp_Vector[segments + 1];
for (int i = 0; i < segments + 1; i++)
{
t = 2 * 3.14159265f * i / (float)segments;
r = r_out + r_in * warp_Math.cos(p * t);
z = h * warp_Math.sin(p * t);
theta = q * t;
x = r * warp_Math.cos(theta);
y = r * warp_Math.sin(theta);
path [i] = new warp_Vector(x, y, z);
}
return(TUBE(path, r_tube, steps, true));
}
public void DisplayDefaultScene()
{
_scene = new warp_Scene(512, 512);
warp_Material crystal = new warp_Material(warp_TextureFactory.MARBLE(128, 128, .15f));
_scene.addMaterial("crystal", crystal);
warp_Material c = (warp_Material)_scene.materialData ["crystal"];
c.setReflectivity(255);
c.setTransparency(100);
_scene.environment.setBackground(warp_TextureFactory.CHECKERBOARD(128, 128, 3, 0x000000, 0x999999));
_scene.addLight("light1", new warp_Light(new warp_Vector(0.2f, 0.2f, 1f), 0xFFFFFF, 320, 80));
_scene.addLight("light2", new warp_Light(new warp_Vector(-1f, -1f, 1f), 0xffffff, 100, 40));
warp_Vector[] path = new warp_Vector[15];
path [0] = new warp_Vector(0.0f, 0.2f, 0);
path [1] = new warp_Vector(0.13f, 0.25f, 0);
path [2] = new warp_Vector(0.33f, 0.3f, 0);
path [3] = new warp_Vector(0.43f, 0.6f, 0);
path [4] = new warp_Vector(0.48f, 0.9f, 0);
path [5] = new warp_Vector(0.5f, 0.9f, 0);
path [6] = new warp_Vector(0.45f, 0.6f, 0);
path [7] = new warp_Vector(0.35f, 0.3f, 0);
path [8] = new warp_Vector(0.25f, 0.2f, 0);
path [9] = new warp_Vector(0.1f, 0.15f, 0);
path [10] = new warp_Vector(0.1f, 0.0f, 0);
path [11] = new warp_Vector(0.1f, -0.5f, 0);
path [12] = new warp_Vector(0.35f, -0.55f, 0);
path [13] = new warp_Vector(0.4f, -0.6f, 0);
path [14] = new warp_Vector(0.0f, -0.6f, 0);
_scene.addObject("wineglass", warp_ObjectFactory.ROTATIONOBJECT(path, 32));
_scene.sceneobject("wineglass").setMaterial(_scene.material("crystal"));
_scene.sceneobject("wineglass").scale(0.8f, 0.8f, 0.8f);
_scene.sceneobject("wineglass").rotate(0.5f, 0f, 0f);
_scene.render();
//Refresh();
}
public static warp_Object SPIRAL(float h, float r_out, float r_in,
float r_tube, float w, float f,
int segments, int steps)
{
float x, y, z, r, t, theta;
warp_Vector[] path = new warp_Vector[segments + 1];
for (int i = 0; i < segments + 1; i++)
{
t = (float)i / (float)segments;
r = r_out + r_in * warp_Math.sin(2 * 3.14159265f * f * t);
z = (h / 2) + h * t;
theta = 2 * 3.14159265f * w * t;
x = r * warp_Math.cos(theta);
y = r * warp_Math.sin(theta);
path [i] = new warp_Vector(x, y, z);
}
return(TUBE(path, r_tube, steps, false));
}
public static warp_Object SPHERE(float radius, int segments)
{
warp_Vector[] path = new warp_Vector[segments];
float x, y, angle;
path [0] = new warp_Vector(0, radius, 0);
path [segments - 1] = new warp_Vector(0, -radius, 0);
for (int i = 1; i < segments - 1; i++)
{
angle = -(((float)i / (float)(segments - 2)) - 0.5f) *
3.14159265f;
x = (float)Math.Cos(angle) * radius;
y = (float)Math.Sin(angle) * radius;
path [i] = new warp_Vector(x, y, 0);
}
return(ROTATIONOBJECT(path, segments));
}
public void rotate(warp_Vector v)
{
rotate(v.x, v.y, v.z);
}
public void rotate(float dx, float dy, float dz)
{
pos = pos.transform(warp_Matrix.rotateMatrix(dx, dy, dz));
needsRebuild = true;
}
public void shift(warp_Vector v)
{
shift(v.x, v.y, v.z);
}
public void shift(float dx, float dy, float dz)
{
pos = pos.transform(warp_Matrix.shiftMatrix(dx, dy, dz));
lookat = lookat.transform(warp_Matrix.shiftMatrix(dx, dy, dz));
needsRebuild = true;
}
public void lookAt(warp_Vector p)
{
lookat = p;
needsRebuild = true;
}
public void lookAt(float px, float py, float pz)
{
lookat = new warp_Vector(px, py, pz);
needsRebuild = true;
}
public void setPos(warp_Vector p)
{
pos = p;
needsRebuild = true;
}
public void setPos(float px, float py, float pz)
{
pos = new warp_Vector(px, py, pz);
needsRebuild = true;
}
public void setPos(warp_Vector pos)
{
flareObject.fastvertex [0].pos = pos;
}
public static warp_Vector vectorProduct(warp_Vector a, warp_Vector b)
// returns a x b
{
return(new warp_Vector(a.y * b.z - b.y * a.z, a.z * b.x - b.z * a.x, a.x * b.y - b.x * a.y));
}
