154
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→Week 9 - Mar 11
=== To Do ===
=== Resources ===
== Week 10 - Mar 18 ==
=== This Week ===
* Texturing - Tiling
:
** iGraphic.h
:: add u v parameters, both of which default to 1
<syntaxhighlight lang="cpp">
iGraphic* CreateBox(float, float, float, float, float, float,
float = 1, float = 1);
iGraphic* CreateIBox(float, float, float, float, float, float,
float = 1, float = 1);
iGraphic* CreateGrid(float, float, int);
iGraphic* TriangleList(const wchar_t* file);
iGraphic* TriangleList(const wchar_t*, const Colour&);
iGraphic* CreateRectangleList(float, float, float, float,
float = 1, float = 1);
iGraphic* CreateIRectangleList(float, float, float, float,
float = 1, float = 1);
iGraphic* CreateMesh(PrimitiveType, float*, int*);
iGraphic* CreateMesh(const wchar_t*);
iGraphic* CreateMeshBox(float, float, float, float, float,
float, float = 1, float = 1);
</syntaxhighlight>
** Graphic.cpp
:: extend add functions to include u v parameters
<syntaxhighlight lang="cpp">
//-------------------------------- Graphic Structures -------------------------
//
// prototypes for add() function used by the Create...() functions
void add(VertexList<Vertex>*, const Vector&, const Vector&, const Vector&,
const Vector&, const Vector&, float = 1, float = 1);
void add(IndexedList<Vertex>*, const Vector&, const Vector&, const Vector&,
const Vector&, const Vector&, float = 1, float = 1);
void add(CustomMesh<Vertex>*, const Vector&, const Vector&, const Vector&,
const Vector&, const Vector&, float = 1, float = 1);
// CreateBox builds a triangle vertex list for a brick-like box from two
// extreme points one face at a time with all faces having the same attributes
//
iGraphic* CreateBox(float minx, float miny, float minz, float maxx,
float maxy, float maxz, float u, float v) {
VertexList<Vertex>* vertexList =
(VertexList<Vertex>*)CreateVertexList<Vertex>(TRIANGLE_LIST, 12);
float x = (minx + maxx) / 2;
float y = (miny + maxy) / 2;
float z = (minz + maxz) / 2;
minx -= x;
miny -= y;
minz -= z;
maxx -= x;
maxy -= y;
maxz -= z;
// bounding sphere
float max;
max = maxx > maxy ? maxx : maxy;
max = maxz > max ? maxz : max;
vertexList->setRadius(1.73205f * max);
// locate centroid at origin
Vector p1 = Vector(minx, miny, minz),
p2 = Vector(minx, maxy, minz),
p3 = Vector(maxx, maxy, minz),
p4 = Vector(maxx, miny, minz),
p5 = Vector(minx, miny, maxz),
p6 = Vector(minx, maxy, maxz),
p7 = Vector(maxx, maxy, maxz),
p8 = Vector(maxx, miny, maxz);
add(vertexList, p1, p2, p3, p4, Vector(0, 0, -1), u, v); // front
add(vertexList, p4, p3, p7, p8, Vector(1, 0, 0), u, v); // right
add(vertexList, p8, p7, p6, p5, Vector(0, 0, 1), u, v); // back
add(vertexList, p6, p2, p1, p5, Vector(-1, 0, 0), u, v); // left
add(vertexList, p1, p4, p8, p5, Vector(0, -1, 0), u, v); // bottom
add(vertexList, p2, p6, p7, p3, Vector(0, 1, 0), u, v); // top
return vertexList;
}
iGraphic* CreateIBox(float minx, float miny, float minz, float maxx,
float maxy, float maxz, float u, float v) {
IndexedList<Vertex>* indexedList = (IndexedList<Vertex>*)
CreateIndexedList<Vertex, unsigned short>(TRIANGLE_LIST, 12);
float x = (minx + maxx) / 2;
float y = (miny + maxy) / 2;
float z = (minz + maxz) / 2;
minx -= x;
miny -= y;
minz -= z;
maxx -= x;
maxy -= y;
maxz -= z;
// bounding sphere
float max;
max = maxx > maxy ? maxx : maxy;
max = maxz > max ? maxz : max;
indexedList->setRadius(1.73205f * max);
// locate centroid at origin
Vector p1 = Vector(minx, miny, minz),
p2 = Vector(minx, maxy, minz),
p3 = Vector(maxx, maxy, minz),
p4 = Vector(maxx, miny, minz),
p5 = Vector(minx, miny, maxz),
p6 = Vector(minx, maxy, maxz),
p7 = Vector(maxx, maxy, maxz),
p8 = Vector(maxx, miny, maxz);
add(indexedList, p1, p2, p3, p4, Vector(0, 0, -1), u, v); // front
add(indexedList, p4, p3, p7, p8, Vector(1, 0, 0), u, v); // right
add(indexedList, p8, p7, p6, p5, Vector(0, 0, 1), u, v); // back
add(indexedList, p6, p2, p1, p5, Vector(-1, 0, 0), u, v); // left
add(indexedList, p1, p4, p8, p5, Vector(0, -1, 0), u, v); // bottom
add(indexedList, p2, p6, p7, p3, Vector(0, 1, 0), u, v); // top
return indexedList;
}
// CreateGrid builds a grid-like line list of n by n lines in the x-z plane
//
iGraphic* CreateGrid(float min, float max, int n) {
VertexList<Vertex>* vertexList =
(VertexList<Vertex>*)CreateVertexList<Vertex>(LINE_LIST, 2*n+2);
float x = (min + max) / 2;
min -= x;
max -= x;
// bounding sphere
vertexList->setRadius(1.73205f * max);
float cur = min, inc = (max - min) / float(n - 1);
for (int i = 0; i < n; i++, cur += inc) {
// in the local x direction
vertexList->add(Vertex(Vector(min, 0, cur), Vector(0, 1, 0)));
vertexList->add(Vertex(Vector(max, 0, cur), Vector(0, 1, 0)));
// in the local z direction
vertexList->add(Vertex(Vector(cur, 0, min), Vector(0, 1, 0)));
vertexList->add(Vertex(Vector(cur, 0, max), Vector(0, 1, 0)));
}
return vertexList;
}
// CreateRectangleList builds a triangle list in the x-y plane from its two
// extreme points
//
iGraphic* CreateRectangleList(float minx, float miny, float maxx, float maxy,
float u, float v) {
VertexList<Vertex>* vertexList =
(VertexList<Vertex>*)CreateVertexList<Vertex>(TRIANGLE_LIST, 2);
float x = (minx + maxx) / 2, y = (miny + maxy) / 2;
minx -= x;
miny -= y;
maxx -= x;
maxy -= y;
// bounding sphere
float max;
max = maxx > maxy ? maxx : maxy;
vertexList->setRadius(1.73205f * max);
// locate centroid at origin
Vector p1 = Vector(minx, miny, 0),
p2 = Vector(minx, maxy, 0),
p3 = Vector(maxx, maxy, 0),
p4 = Vector(maxx, miny, 0);
add(vertexList, p1, p2, p3, p4, Vector(0, 0, -1), u, v);
return vertexList;
}
// CreateIRectangleList builds an indexed triangle list in the x-y plane from
// its two extreme points
//
iGraphic* CreateIRectangleList(float minx, float miny, float maxx, float maxy,
float u, float v) {
IndexedList<Vertex>* indexedList = (IndexedList<Vertex>*)
CreateIndexedList<Vertex, unsigned short>(TRIANGLE_LIST, 2);
float x = (minx + maxx) / 2, y = (miny + maxy) / 2;
minx -= x;
miny -= y;
maxx -= x;
maxy -= y;
// bounding sphere
float max;
max = maxx > maxy ? maxx : maxy;
indexedList->setRadius(1.73205f * max);
// locate centroid at origin
Vector p1 = Vector(minx, miny, 0),
p2 = Vector(minx, maxy, 0),
p3 = Vector(maxx, maxy, 0),
p4 = Vector(maxx, miny, 0);
add(indexedList, p1, p2, p3, p4, Vector(0, 0, -1), u, v);
return indexedList;
}
// CreateIRectangleList builds an indexed triangle list in the x-y plane from
// its two extreme points
//
iGraphic* CreateBRectangleList(float minx, float miny, float maxx, float maxy,
float u, float v) {
IndexedList<BumpVertex>* indexedList = (IndexedList<BumpVertex>*)
CreateIndexedList<BumpVertex, unsigned short>(TRIANGLE_LIST, 2);
float x = (minx + maxx) / 2, y = (miny + maxy) / 2;
minx -= x;
miny -= y;
maxx -= x;
maxy -= y;
// bounding sphere
float max;
max = maxx > maxy ? maxx : maxy;
indexedList->setRadius(1.73205f * max);
// locate centroid at origin
Vector p1 = Vector(minx, miny, 0),
p2 = Vector(minx, maxy, 0),
p3 = Vector(maxx, maxy, 0),
p4 = Vector(maxx, miny, 0);
add(indexedList, p1, p2, p3, p4, Vector(0, 0, -1), u, v);
return indexedList;
}
// CreateMeshBox builds a mesh for a brick-like box from two extreme points one
// face at a time with each faces having distinct attributes
//
iGraphic* CreateMeshBox(float minx, float miny, float minz, float maxx,
float maxy, float maxz, float u, float v) {
unsigned attribute[] = {0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5};
CustomMesh<>* mesh = (CustomMesh<>*)
CreateCustomMesh<Vertex, unsigned short>(attribute, 12, 36, 24, 6);
float x = (minx + maxx) / 2, y = (miny + maxy) / 2, z = (minz + maxz) / 2;
minx -= x;
miny -= y;
minz -= z;
maxx -= x;
maxy -= y;
maxz -= z;
// bounding sphere
float max;
max = maxx > maxy ? maxx : maxy;
max = maxz > max ? maxz : max;
mesh->setRadius(1.73205f * max);
// one face at a time
Vector p1 = Vector(minx, miny, minz),
p2 = Vector(minx, maxy, minz),
p3 = Vector(maxx, maxy, minz),
p4 = Vector(maxx, miny, minz),
p5 = Vector(minx, miny, maxz),
p6 = Vector(minx, maxy, maxz),
p7 = Vector(maxx, maxy, maxz),
p8 = Vector(maxx, miny, maxz);
add(mesh, p1, p2, p3, p4, Vector(0, 0, -1), u, v); // front
add(mesh, p4, p3, p7, p8, Vector(1, 0, 0), u, v); // right
add(mesh, p8, p7, p6, p5, Vector(0, 0, 1), u, v); // back
add(mesh, p6, p2, p1, p5, Vector(-1, 0, 0), u, v); // left
add(mesh, p1, p4, p8, p5, Vector(0, -1, 0), u, v); // bottom
add(mesh, p2, p6, p7, p3, Vector(0, 1, 0), u, v); // top
return mesh;
}
void add(VertexList<Vertex>* vertexList, const Vector& p1, const Vector& p2,
const Vector& p3, const Vector& p4, const Vector& n, float u, float v) {
vertexList->add(Vertex(p1, n, 0, v));
vertexList->add(Vertex(p2, n, 0, 0));
vertexList->add(Vertex(p3, n, u, 0));
vertexList->add(Vertex(p1, n, 0, v));
vertexList->add(Vertex(p3, n, u, 0));
vertexList->add(Vertex(p4, n, u, v));
}
void add(IndexedList<Vertex>* indexedList, const Vector& p1, const Vector& p2,
const Vector& p3, const Vector& p4, const Vector& n, float u, float v) {
unsigned v1 = indexedList->add(Vertex(p1, n, 0, v));
unsigned v2 = indexedList->add(Vertex(p2, n, 0, 0));
unsigned v3 = indexedList->add(Vertex(p3, n, u, 0));
unsigned v4 = indexedList->add(Vertex(p4, n, u, v));
indexedList->add(v1);
indexedList->add(v2);
indexedList->add(v3);
indexedList->add(v1);
indexedList->add(v3);
indexedList->add(v4);
}
void add(CustomMesh<Vertex>* mesh, const Vector& p1, const Vector& p2,
const Vector& p3, const Vector& p4, const Vector& n, float u, float v) {
unsigned v1 = mesh->add(Vertex(p1, n, 0, v));
unsigned v2 = mesh->add(Vertex(p2, n, 0, 0));
unsigned v3 = mesh->add(Vertex(p3, n, u, 0));
unsigned v4 = mesh->add(Vertex(p4, n, u, v));
mesh->add(v1);
mesh->add(v2);
mesh->add(v3);
mesh->add(v1);
mesh->add(v3);
mesh->add(v4);
}
</syntaxhighlight>
* Texturing - Address Modes
:
<syntaxhighlight lang="cpp">
</syntaxhighlight>
* Texturing - Multi-Texturing
:
<syntaxhighlight lang="cpp">
</syntaxhighlight>
=== To Do ===
=== Resources ===
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== Week 10 11 - Mar 18 25 ===== This Week === <syntaxhighlight lang="cpp"></syntaxhighlight> === To Do ====== Resources ===--><!--== Week 12 - Apr 1 ==
=== This Week ===