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 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 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 warp_Vertex(warp_Vector ppos, warp_Vector norm, float u, float v)
{
pos = ppos;
n = norm;
this.u = u;
this.v = v;
}
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 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 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 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 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_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 warp_Light(warp_Vector direction, int diffuse, int specular, int highlightSheen, int highlightSpread)
{
v = direction;
v.normalize();
this.diffuse = diffuse;
this.specular = specular;
this.highlightSheen = highlightSheen;
this.highlightSpread = highlightSpread;
}
public warp_Light(warp_Vector direction, int color, int highlightSheen, int highlightSpread)
{
v = direction.getClone();
v.normalize();
this.diffuse = color;
this.specular = color;
this.highlightSheen = highlightSheen;
this.highlightSpread = highlightSpread;
}
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 warp_Light(warp_Vector direction, int color, int highlightSheen, int highlightSpread)
{
v = direction;
v.normalize();
this.diffuse = color;
this.specular = color;
this.highlightSheen = highlightSheen;
this.highlightSpread = highlightSpread;
}
public warp_Light(warp_Vector direction, int diffuse, int specular, int highlightSheen, int highlightSpread)
{
v = direction.getClone();
v.normalize();
this.diffuse = diffuse;
this.specular = specular;
this.highlightSheen = highlightSheen;
this.highlightSpread = highlightSpread;
}
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 warp_Matrix(warp_Vector right, warp_Vector up, warp_Vector forward)
{
m00=right.x;
m10=right.y;
m20=right.z;
m01=up.x;
m11=up.y;
m21=up.z;
m02=forward.x;
m12=forward.y;
m22=forward.z;
}
public warp_Matrix(warp_Vector right, warp_Vector up, warp_Vector forward)
{
m00 = right.x;
m10 = right.y;
m20 = right.z;
m01 = up.x;
m11 = up.y;
m21 = up.z;
m02 = forward.x;
m12 = forward.y;
m22 = forward.z;
}
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 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 static void projectCylindric(warp_Object obj)
{
obj.rebuild();
warp_Vector min = obj.minimum();
warp_Vector max = obj.maximum();
float dz = 1 / (max.z - min.z);
for (int i = 0; i < obj.vertices; i++)
{
obj.fastvertex[i].pos.buildCylindric();
obj.fastvertex[i].u = obj.fastvertex[i].pos.theta / (2 * 3.14159265f);
obj.fastvertex[i].v = (obj.fastvertex[i].pos.z - min.z) * dz;
}
}
public void clipFrustrum(int w, int h)
{
if (parent.material==null) {visible=false; return; }
outOfFrustrum=(p1.clipcode&p2.clipcode&p3.clipcode)!=0;
if (outOfFrustrum) {visible=false; return; }
if (n2.z>0.5) {visible=true; return; }
warp_Vector triangleCenter = new warp_Vector(
(p1.pos2.x+p2.pos2.x+p3.pos2.x),
(p1.pos2.y+p2.pos2.y+p3.pos2.y),
(p1.pos2.z+p2.pos2.z+p3.pos2.z));
visible=warp_Vector.angle(triangleCenter,n2)>0;
}
public static void projectFrontal(warp_Object obj)
{
obj.rebuild();
warp_Vector min = obj.minimum();
warp_Vector max = obj.maximum();
float du = 1 / (max.x - min.x);
float dv = 1 / (max.y - min.y);
for (int i = 0; i < obj.vertices; i++)
{
obj.fastvertex[i].u = (obj.fastvertex[i].pos.x - min.x) * du;
obj.fastvertex[i].v = 1 - (obj.fastvertex[i].pos.y - min.y) * dv;
}
}
public void regenerateNormal()
{
warp_Vector wn;
float nx = 0f;
float ny = 0f;
float nz = 0f;
for (int i = 0; i < neighbor.Count; i++)
{
wn = neighbor[i].getWeightedNormal();
nx += wn.x;
ny += wn.y;
nz += wn.z;
}
n = new warp_Vector(nx, ny, nz).normalize();
}
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 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 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 regenerateNormal()
{
float nx = 0;
float ny = 0;
float nz = 0;
IEnumerator enumerator = neighbor.GetEnumerator();
warp_Triangle tri;
warp_Vector wn;
while (enumerator.MoveNext())
{
tri = (warp_Triangle)enumerator.Current;
wn = tri.getWeightedNormal();
nx += wn.x;
ny += wn.y;
nz += wn.z;
}
n = new warp_Vector(nx, ny, nz).normalize();
}
public void clipFrustrum(int w, int h)
{
if (parent.material == null)
{
visible = false; return;
}
outOfFrustrum = (p1.clipcode & p2.clipcode & p3.clipcode) != 0;
if (outOfFrustrum)
{
visible = false; return;
}
if (n2.z > 0.5)
{
visible = true; return;
}
warp_Vector triangleCenter = new warp_Vector(
(p1.pos2.x + p2.pos2.x + p3.pos2.x),
(p1.pos2.y + p2.pos2.y + p3.pos2.y),
(p1.pos2.z + p2.pos2.z + p3.pos2.z));
visible = warp_Vector.angle(triangleCenter, n2) > 0;
}
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 warp_Vector add(warp_Vector a, warp_Vector b)
// adds 2 vectors
{
return new warp_Vector(a.x+b.x,a.y+b.y,a.z+b.z);
}
public void addVertex(warp_Vector pos, warp_Vector norm, float u, float v)
{
addVertex(new warp_Vertex(pos, norm, u, v));
}
public void addVertex(warp_Vector pos, warp_Vector norm)
{
addVertex(new warp_Vertex(pos, norm));
}
public static warp_Object BOX(warp_Vector size)
{
return BOX(size.x, size.y, size.z);
}
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 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);
}
public static float len(warp_Vector a)
// length of vector
{
return (float)Math.Sqrt(a.x*a.x+a.y*a.y+a.z*a.z);
}
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_Vector scale(float f, warp_Vector a)
// substracts 2 vectors
{
a.x *= f;
a.y *= f;
a.z *= f;
return a;
}
public void project(warp_Matrix m)
{
matrix2 = m.getClone();
matrix2.transform(m);
v2 = v.transform(matrix2);
}
public static warp_Object ROTATIONOBJECT(warp_Vector[] path, int sides)
{
int steps = sides + 1;
warp_Object newObject = new warp_Object();
double alpha = 2 * pi / ( (double) steps - 1);
float qx, qz;
int nodes = path.GetLength(0);
warp_Vertex vertex = null;
float u, v; // Texture coordinates
for (int j = 0; j < steps; j++)
{
u = (float) (steps - j - 1) / (float) (steps - 1);
for (int i = 0; i < nodes; i++)
{
v = (float) i / (float) (nodes - 1);
qx = (float) (path[i].x * Math.Cos(j * alpha) +
path[i].z * Math.Sin(j * alpha));
qz = (float) (path[i].z * Math.Cos(j * alpha) -
path[i].x * Math.Sin(j * alpha));
vertex = new warp_Vertex(qx, path[i].y, qz);
vertex.u = u;
vertex.v = v;
newObject.addVertex(vertex);
}
}
for (int j = 0; j < steps - 1; j++)
{
for (int i = 0; i < nodes - 1; i++)
{
newObject.addTriangle(i + nodes * j, i + nodes * (j + 1),
i + 1 + nodes * j);
newObject.addTriangle(i + nodes * (j + 1),
i + 1 + nodes * (j + 1),
i + 1 + nodes * j);
}
}
for (int i = 0; i < nodes - 1; i++)
{
newObject.addTriangle(i + nodes * (steps - 1), i,
i + 1 + nodes * (steps - 1));
newObject.addTriangle(i, i + 1, i + 1 + nodes * (steps - 1));
}
return newObject;
}
public warp_Light(warp_Vector direction, int diffuse)
{
v = direction.getClone();
v.normalize();
this.diffuse = diffuse;
}
public static warp_Vector sub(warp_Vector a, warp_Vector b)
// substracts 2 vectors
{
return new warp_Vector(a.x-b.x,a.y-b.y,a.z-b.z);
}
public static warp_Vector scale(float f, warp_Vector a)
// substracts 2 vectors
{
return new warp_Vector(f*a.x,f*a.y,f*a.z);
}
public void regenerateNormal()
{
n = warp_Vector.getNormal(p1.pos, p2.pos, p3.pos);
}
public static warp_Vector getNormal(warp_Vector a, warp_Vector b, warp_Vector c)
// returns the normal vector of the plane defined by the two vectors
{
return vectorProduct(a,b,c).normalize();
}
public void project(warp_Matrix normalProjection)
{
n2=n.transform(normalProjection);
dist=getDist();
}
public static warp_Vector vectorProduct(warp_Vector a, warp_Vector b, warp_Vector c)
// returns (b-a) x (c-a)
{
return vectorProduct(sub(b,a),sub(c,a));
}
public void regenerateNormal()
{
n=warp_Vector.getNormal(p1.pos,p2.pos,p3.pos);
}
public void addVertex(warp_Vector pos)
{
addVertex(new warp_Vertex(pos));
}
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 addVertex(warp_Vector pos)
{
addVertex(new warp_Vertex(pos));
}
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 addVertex(warp_Vector pos, warp_Vector norm)
{
addVertex(new warp_Vertex(pos, norm));
}
public static warp_Object TUBE(warp_Vector[] path, float r, int steps, bool closed)
{
warp_Vector[] circle = new warp_Vector[steps];
float angle;
for (int i = 0; i < steps; i++)
{
angle = 2 * 3.14159265f * (float) i / (float) steps;
circle[i] = new warp_Vector(r * warp_Math.cos(angle),
r * warp_Math.sin(angle), 0f);
}
warp_Object newObject = new warp_Object();
int segments = path.GetLength(0);
warp_Vector forward, up, right;
warp_Matrix frenetmatrix;
warp_Vertex tempvertex;
float relx, rely;
int a, b, c, d;
for (int i = 0; i < segments; i++)
{
// Calculate frenet frame matrix
if (i != segments - 1)
{
forward = warp_Vector.sub(path[i + 1], path[i]);
}
else
{
if (!closed)
{
forward = warp_Vector.sub(path[i], path[i - 1]);
}
else
{
forward = warp_Vector.sub(path[1], path[0]);
}
}
forward.normalize();
up = new warp_Vector(0f, 0f, 1f);
right = warp_Vector.getNormal(forward, up);
up = warp_Vector.getNormal(forward, right);
frenetmatrix = new warp_Matrix(right, up, forward);
frenetmatrix.shift(path[i].x, path[i].y, path[i].z);
// Add nodes
relx = (float) i / (float) (segments - 1);
for (int k = 0; k < steps; k++)
{
rely = (float) k / (float) steps;
tempvertex = new warp_Vertex(circle[k].transform(frenetmatrix));
tempvertex.u = relx;
tempvertex.v = rely;
newObject.addVertex(tempvertex);
}
}
for (int i = 0; i < segments - 1; i++)
{
for (int k = 0; k < steps - 1; k++)
{
a = i * steps + k;
b = a + 1;
c = a + steps;
d = b + steps;
newObject.addTriangle(a, c, b);
newObject.addTriangle(b, c, d);
}
a = (i + 1) * steps - 1;
b = a + 1 - steps;
c = a + steps;
d = b + steps;
newObject.addTriangle(a, c, b);
newObject.addTriangle(b, c, d);
}
return newObject;
}
public void addVertex(warp_Vector pos, warp_Vector norm, float u, float v)
{
addVertex(new warp_Vertex(pos, norm, u, v));
}
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 warp_Light(warp_Vector direction)
{
v = direction.getClone();
v.normalize();
}