void calculateCullingFrustum(mat4 camMatrix) {
float cLeft = -0.05f;
float cRight = 0.05f;
float cBottom = -0.05f;
float cTop = 0.05f;
float cNear = 0.2f;
//float cFar = 50.f;
vec3 topLeft = {cLeft, cTop, -cNear};
vec3 bottomLeft = {cLeft, cBottom, -cNear};
vec3 topRight = {cRight, cTop, -cNear};
vec3 bottomRight = {cRight, cBottom, -cNear};
vec3 farNormal = {0.f, 0.f, -1.f};
mat4 invCam = InvertMat4(camMatrix);
topLeft = MultVec3(invCam, topLeft);
bottomLeft = MultVec3(invCam, topLeft);
topRight = MultVec3(invCam, topLeft);
bottomRight = MultVec3(invCam, topLeft);
farNormal = MultVec3(invCam, farNormal);
cullingFrustumNormals[0] = Normalize(CrossProduct(topLeft, bottomLeft)); // Left normal
cullingFrustumNormals[1] = Normalize(CrossProduct(bottomRight, topRight)); // Right normal
cullingFrustumNormals[2] = Normalize(CrossProduct(bottomLeft, bottomRight)); // Bottom normal
cullingFrustumNormals[3] = Normalize(CrossProduct(topRight, topLeft)); // Top normal
cullingFrustumNormals[4] = Normalize(farNormal); // Far normal
}
static void updateCameraMatrix(mat4 *matrix)
{
if (matrix != NULL)
{
camera = MultVec3(*matrix, camera);
lookAtPoint = MultVec3(*matrix, lookAtPoint);
}
*_cameraMatrix = lookAt(camera.x, camera.y, camera.z,
lookAtPoint.x, lookAtPoint.y, lookAtPoint.y, up.x, up.y, up.z);
right = SetVector(_cameraMatrix->m[0], _cameraMatrix->m[1], _cameraMatrix->m[2]);
up = SetVector(_cameraMatrix->m[4], _cameraMatrix->m[5], _cameraMatrix->m[6]);
fwd = SetVector(_cameraMatrix->m[8], _cameraMatrix->m[9], _cameraMatrix->m[10]);
// glUniformMatrix4fv(glGetUniformLocation(shader, viewMatName), 1, GL_TRUE, _cameraMatrix.m);
}
void mouse(int x, int y)
{
vec3 camRight = Normalize(CrossProduct(camDir, camUp));
mat4 rot1;
mat4 rot2;
int dx = x - halfWindowWidth;
int dy = y - halfWindowHeight;
rot1 = ArbRotate(camRight, - dy * CAM_ROT_SPEED);
rot2 = Ry(-dx * CAM_ROT_SPEED);
rot2 = Mult(rot2, rot1);
camDir = Normalize(MultVec3(rot2, camDir));
glutWarpPointer(halfWindowWidth, halfWindowHeight);
}
void keyboardControl(unsigned char key, int x, int y)
{
vec3 camRight = Normalize(CrossProduct(camDir, camUp));
mat4 rot;
switch(key) {
case GLUT_KEY_F:
rot = ArbRotate(camRight, CAM_ROT_SPEED);
camDir = Normalize(MultVec3(rot, camDir)); break;
case GLUT_KEY_H:
glutToggleFullScreen(); break;
case GLUT_KEY_ESC:
glutExit(); break;
// default:
//printf("Key code: %d\n", key);
}
}
static void
zprKey(unsigned char key, int x, int y)
{
float speed = 0.3, rotSpeed = 0.3;
GLfloat speedX = 0, speedY = 0, speedZ = 0,
angle = 0.0,
dX = 0, dY = 0, dZ = 0;
bool turnedX = false, turnedY = false;
// printf("%c\n", key);
switch (key)
{
case 'i':
speedY = speed;
break;
case 'k':
speedY = -speed;
break;
case 'j':
speedX = -speed;
break;
case 'l':
speedX = speed;
break;
case 'd':
angle = -rotSpeed;
turnedY = true;
break;
case 'a':
angle = rotSpeed;
turnedY = true;
break;
case 'w':
speedZ = -speed;
break;
case 's':
speedZ = speed;
break;
case 'q':
angle = -rotSpeed;
turnedX = true;
break;
case 'e':
angle = rotSpeed;
turnedX = true;
break;
}
dX = (GLfloat) _cameraMatrix->m[0] * speedX + _cameraMatrix->m[4] * speedY + _cameraMatrix->m[8] * speedZ;
dY = (GLfloat) _cameraMatrix->m[1] * speedX + _cameraMatrix->m[5] * speedY + _cameraMatrix->m[9] * speedZ;
dZ = (GLfloat) _cameraMatrix->m[2] * speedX + _cameraMatrix->m[6] * speedY + _cameraMatrix->m[10] * speedZ;
camera.x += dX;
camera.y += dY;
camera.z += dZ;
lookAtPoint.x += dX;
lookAtPoint.y += dY;
lookAtPoint.z += dZ;
if(turnedY)
{
tMat = T(-camera.x, -camera.y, -camera.z);
rotMat = ArbRotate(up, angle);
lookAtPoint = MultVec3(tMat, lookAtPoint);
lookAtPoint = MultVec3(rotMat, lookAtPoint);
tMat = T(camera.x, camera.y, camera.z);
lookAtPoint = MultVec3(tMat, lookAtPoint);
}
if(turnedX)
{
tMat = T(-lookAtPoint.x, -lookAtPoint.y, -lookAtPoint.z);
rotMat = ArbRotate(right, angle);
camera = MultVec3(tMat, camera);
camera = MultVec3(rotMat, camera);
tMat = T(lookAtPoint.x, lookAtPoint.y, lookAtPoint.z);
camera = MultVec3(tMat, camera);
}
updateCameraMatrix(0);
}
void display(void)
{
ballXPos = ballXPos + 0.03;
ballZPos = ballZPos + 0.03;
int d = floor(ballXPos * 5.0);
int e = floor(ballZPos * 5.0);
dx = ballXPos * 5.0 - d;
dz = ballZPos * 5.0 - e;
if(dx+dz<1){
dyx = tm->vertexArray[(d+1 + e * texWidth)*3+1] - tm->vertexArray[(d + e * texWidth)*3+1];
dyz = tm->vertexArray[(d + (e+1) * texWidth)*3+1] - tm->vertexArray[(d + e * texWidth)*3+1];
ballYPos = dyx*dx+dyz*dz + tm->vertexArray[(d + e * texWidth)*3+1];
}
else{
dyx = tm->vertexArray[(d+1 + e * texWidth)*3+1] - tm->vertexArray[((d+1) + (e+1) * texWidth)*3+1];
dyz = tm->vertexArray[(d + (e+1) * texWidth)*3+1] - tm->vertexArray[((d+1) + (e+1) * texWidth)*3+1];
dx = (ceil(ballXPos * 5.0)-ballXPos * 5.0);
dz = (ceil(ballZPos * 5.0)-ballZPos * 5.0);
ballYPos = dyx*dx+dyz*dz + tm->vertexArray[((d+1) + (e+1) * texWidth)*3+1];
}
//printf("%lf\n",ballYPos);
vec3 lookingDir = Normalize(VectorSub(l, p));
vec3 walkSideways = Normalize(CrossProduct(lookingDir, v));
if (glutKeyIsDown('a')) {
p = VectorSub(p, walkSideways);
l = VectorSub(l, walkSideways);
}
if (glutKeyIsDown('d')) {
p = VectorAdd(p, walkSideways);
l = VectorAdd(l, walkSideways);
}
if (glutKeyIsDown('w')) {
p = VectorAdd(p, lookingDir);
l = VectorAdd(l, lookingDir);
}
if (glutKeyIsDown('s')) {
p = VectorSub(p, lookingDir);
l = VectorSub(l, lookingDir);
}
if (glutKeyIsDown('l')) {
trans = T(-p.x, -p.y, -p.z);
trans2 = T(p.x, p.y, p.z);
rot = Ry(-0.05);
l = MultVec3(trans2, MultVec3(rot, MultVec3(trans, l)));
}
if (glutKeyIsDown('j')) {
trans = T(-p.x, -p.y, -p.z);
trans2 = T(p.x, p.y, p.z);
rot = Ry(0.05);
l = MultVec3(trans2, MultVec3(rot, MultVec3(trans, l)));
}
if (glutKeyIsDown('i')) {
trans = T(-p.x, -p.y, -p.z);
trans2 = T(p.x, p.y, p.z);
rotateUpDown = ArbRotate(walkSideways, 0.05);
l = MultVec3(trans2, MultVec3(rotateUpDown, MultVec3(trans, l)));
}
if (glutKeyIsDown('k')) {
trans = T(-p.x, -p.y, -p.z);
trans2 = T(p.x, p.y, p.z);
rotateUpDown = ArbRotate(walkSideways, -0.05);
l = MultVec3(trans2, MultVec3(rotateUpDown, MultVec3(trans, l)));
}
// clear the screen
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
printError("pre display");
glUseProgram(program);
// Build matrix
camMatrix = lookAtv(p,l,v);
modelView = IdentityMatrix();
total = Mult(camMatrix, modelView);
glUniformMatrix4fv(glGetUniformLocation(program, "mdlMatrix"), 1, GL_TRUE, modelView.m);
glUniformMatrix4fv(glGetUniformLocation(program, "cameraMatrix"), 1, GL_TRUE, camMatrix.m);
DrawModel(tm, program, "inPosition", "inNormal", "inTexCoord");
//Draw sphere
modelToWorld = T(ballXPos, ballYPos, ballZPos);
glUniformMatrix4fv(glGetUniformLocation(program, "mdlMatrix"), 1, GL_TRUE, modelToWorld.m);
DrawModel(sphere, program, "inPosition", "inNormal", NULL);
printError("display 2");
glutSwapBuffers();
}
void display(void)
{
// Clear the screen____________________________________
if((cam.x < goalx + 2 && cam.x > goalx - 2) && (cam.z < goalz + 2 && cam.z > goalz - 2))
{
third_person = true;
}
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// Variables
mat4 total, modelView, camMatrix;
GLfloat t =(GLfloat)glutGet(GLUT_ELAPSED_TIME)/1000; //Scale with constant to make animation slower.
//Read input_____________________________________________
if (third_person)
{
goal_found = true;
if (glutKeyIsDown('t'))
{
third_person = false;
}
vec3 pos = {200, 200, 150};// SetVector(keyx,keyy,keyz);
//Mouse control_____________________________________________
//fmin and fmax doesn't really make sense but looks good.
GLfloat mousexlocal = 0;
GLfloat mouseylocal = 0;
if (mousex < 350 || mousex > 250)
{
mousexlocal = 300-mousex;
}
else
{
mousexlocal = 0;
}
deltaphi = deltaphi + deltaphi*-mousexlocal;
deltaphi = fmin(0.0001,deltaphi);
deltaphi = fmax(deltaphi,2 * PI - 0.0001);
forward = MultVec3(Ry(deltaphi*-mousexlocal), forward);
vec3 crossvec = CrossProduct(forward,up);
if (mousey < 350 || mousey > 250)
{
mouseylocal = 300-mousey;
}
else
{
mouseylocal = 0;
}
deltatheta = deltatheta + deltatheta* -mouseylocal;
deltatheta = fmin(0.0001,deltatheta);
deltatheta = fmax(deltatheta,2*PI - 0.0001);
forward = MultVec3( ArbRotate(crossvec,deltatheta*-mouseylocal), forward);
//Create camera matrix_____________________________________________
camMatrix = lookAtv(pos,VectorAdd(forward,pos),up);
}
// FIRST PERSON VIEW --------------------------------------------------------
else
{
vec3 moveVec;
if (glutKeyIsDown('w')) // forwards, obviously
{
vec3 oldcam = cam; //Save old position to check if its legal.
moveVec = ScalarMult(VectorSub(cam, SetVector(lookAtPoint.x, cam.y, lookAtPoint.z)), 0.1); // VectorSub makes a vector in the direction we're looking.
cam = VectorSub(cam, moveVec); // The new camera position is the old camera position + the move vector
cam.y = getHeight(&ttex,cam.x, cam.z)+2; // Get the correct height from the new position
GLfloat maze_height = getHeight(&ttexm, cam.x, cam.z); // Get the height of the maze at the new (possible) camera position
GLfloat ground_height = getHeight(&ttex, cam.x, cam.z); // Get the height of the ground at the new (possible) camera position
//Check if the new position is legal
if ((ground_height - maze_height) < ground_height) // If 0, shouldn't move ever: OK!
// When does it start to move??
{
printf("woot");
cam = oldcam;
}
}
else if (glutKeyIsDown('t'))
{
third_person = true;
}
GLfloat mousexlocal = 0;
GLfloat mouseylocal = 0;
if (mousex < 350 || mousex > 250)
{
mousexlocal = 300-mousex;
}
else
{
mousexlocal = 0;
}
deltaphi = deltaphi + deltaphi*-mousexlocal;
deltaphi = fmin(0.0001,deltaphi);
deltaphi = fmax(deltaphi,2 * PI - 0.0001);
forward = MultVec3(Ry(deltaphi*-mousexlocal), forward);
vec3 crossvec = CrossProduct(forward,up);
if (mousey < 350 || mousey > 250)
{
mouseylocal = 300-mousey;
}
else
{
mouseylocal = 0;
}
deltatheta = deltatheta + deltatheta* -mouseylocal;
deltatheta = fmin(0.0001,deltatheta);
deltatheta = fmax(deltatheta,2*PI - 0.0001);
forward = MultVec3( ArbRotate(crossvec,deltatheta*-mouseylocal), forward);
lookAtPoint = VectorAdd(forward,cam);
//Create camera matrix_____________________________________________
camMatrix = lookAtv(cam,lookAtPoint,up);
}
// --------------------------------------------------------//
// SKYBOX
// --------------------------------------------------------//
glDisable(GL_DEPTH_TEST);
glDisable(GL_CULL_FACE);
glUseProgram(programSky);
glActiveTexture(GL_TEXTURE2);
//glBindTexture(GL_TEXTURE_2D, tex2);
trans = T(0.0, 0.0, 0.0);
rot = Rx(0);
total = Mult(trans, rot);
glUniformMatrix4fv(glGetUniformLocation(programSky, "mdlMatrix"), 1, GL_TRUE, total.m);
lookSky = camMatrix;
lookSky.m[3] = 0;
lookSky.m[7] = 0;
lookSky.m[11] = 0;
glUniformMatrix4fv(glGetUniformLocation(programSky, "lookMatrix"), 1, GL_TRUE, lookSky.m);
glUniformMatrix4fv(glGetUniformLocation(programSky, "projectionMatrix"), 1, GL_TRUE, projectionMatrix.m);
glUniform1i(glGetUniformLocation(programSky, "texUnit2"), 2); // Texture unit 2
DrawModel(skybox, programSky, "in_Position", NULL, "inTexCoord");
glUseProgram(program);
glEnable(GL_DEPTH_TEST);
glEnable(GL_CULL_FACE);
//------------------------------------------------------//
//------------------------------------------------------//
modelView = IdentityMatrix();
total = Mult(camMatrix, modelView);
glActiveTexture(GL_TEXTURE1);
glUseProgram(program);
glUniformMatrix4fv(glGetUniformLocation(program, "mdlMatrix"), 1, GL_TRUE, total.m);
glBindTexture(GL_TEXTURE_2D, tex2); // Bind Our Texture tex1
DrawModel(tm, program,"inPosition", "inNormal", "inTexCoord");
glUseProgram(program);
glUniformMatrix4fv(glGetUniformLocation(program, "mdlMatrix"), 0, GL_TRUE, total.m);
glBindTexture(GL_TEXTURE_2D, tex1); // Bind Our Texture tex1
DrawModel(mm, program,"inPosition", "inNormal", "inTexCoord");
GLfloat y = getHeight(&ttexm, 200, 147);
mat4 trans = T(goalx, 2, goalz);
mat4 scale = S(1, 1, 1);
total = Mult(total, trans);
total = Mult(total, scale);
if (goal_found)
{
char* string = "GOOD JOB!! You won :D";
sfDrawString(100, 100, string);
//while(true){};
}
glUniformMatrix4fv(glGetUniformLocation(program, "mdlMatrix"), 1, GL_TRUE, total.m);
glBindTexture(GL_TEXTURE_2D, tex3); // Bind Our Texture tex1
DrawModel(goal, program,"inPosition", "inNormal", "inTexCoord");
printError("display 2");
glutSwapBuffers();
printf("x %f\n", cam.x);
printf("y %f\n", cam.y);
printf("z %f\n", cam.z);
/* if ( (cam.x < 95) && (cam.x > 85) && */
/* (cam.z < 85) && (cam.z > 75)) */
}
///////////////////////////////////////////////////////
// D E F O R M C Y L I N D E R
//
// Desc: deformera cylinder meshen enligt skelettet
void DeformCylinder()
{
//vec3 v[kMaxBones];
//float w[kMaxBones];
int row, corner, bonesnum, bonesnum2;
//bonesnum = 0;
// för samtliga vertexar
for (row = 0; row < kMaxRow; row++)
{
for (corner = 0; corner < kMaxCorners; corner++)
{
// ---------========= UPG 4 ===========---------
// TODO: skinna meshen mot alla benen.
//
// data som du kan använda:
// g_bonesRes[].rot //Rotation på benen
// g_bones[].pos //Benens position
// g_boneWeights //g_boneWeights[kMaxRow][kMaxCorners][kMaxBones]
// g_vertsOrg //Originalet
// g_vertsRes //Det som ska skickas
//g_vertsRes[row][corner] = g_vertsOrg[row][corner];
vec3 sum = SetVector(0.0, 0.0, 0.0);
for(bonesnum = 0; bonesnum < kMaxBones; bonesnum++)
{
//Beräknar T för Org och Res
mat4 currOrgT = T(g_bones[bonesnum].pos.x, g_bones[bonesnum].pos.y, g_bones[bonesnum].pos.z);
mat4 currResT = T(g_bonesRes[bonesnum].pos.x, g_bonesRes[bonesnum].pos.y, g_bonesRes[bonesnum].pos.z);
//Beräknar M för Org och Res, och även inverterad M
mat4 currOrgM = Mult(currOrgT, g_bones[bonesnum].rot);
mat4 currResM = Mult(currResT, g_bonesRes[bonesnum].rot);
mat4 currInvM = InvertMat4(currOrgM);
mat4 sumOrgM = currOrgM;
mat4 sumResM = currResM;
mat4 sumInvM = currInvM;
for(bonesnum2 = bonesnum - 1; bonesnum2 >= 0; bonesnum2--)
{
//Beräknar T för Org och Res för ben innan bonesnum
mat4 preOrgT = T(g_bones[bonesnum2].pos.x, g_bones[bonesnum2].pos.y, g_bones[bonesnum2].pos.z);
mat4 preResT = T(g_bonesRes[bonesnum2].pos.x, g_bonesRes[bonesnum2].pos.y, g_bonesRes[bonesnum2].pos.z);
//Beräknar M för Org och Res, och även inverterad M för ben innan bonesnum
mat4 preOrgM = Mult(preOrgT, g_bones[bonesnum2].rot);
mat4 preResM = Mult(preResT, g_bonesRes[bonesnum2].rot);
mat4 preInvM = InvertMat4(preOrgM);
//Summerar
sumOrgM = Mult(sumOrgM, preOrgM);
sumResM = Mult(sumResM, preResM);
sumInvM = Mult(preInvM, sumInvM);
}
vec3 resV = MultVec3(sumOrgM, g_vertsOrg[row][corner]);
mat4 temp1 = Mult(sumResM, sumInvM);
vec3 temp2 = MultVec3(temp1, resV);
temp2 = ScalarMult(temp2, g_boneWeights[row][corner][bonesnum]);
sum = VectorAdd(sum, temp2);
}
g_vertsRes[row][corner] = sum;
}
}
}
void display(void)
{
//Read input_____________________________________________
GLfloat t =(GLfloat)glutGet(GLUT_ELAPSED_TIME)/1000; //Scale with constant to make animation slower.
if (glutKeyIsDown('w'))
{
keyz = keyz +1;
}
else if (glutKeyIsDown('s'))
{
keyz = keyz -1;
}
else if (glutKeyIsDown('a'))
{
keyx = keyx +1;
}
else if (glutKeyIsDown('d'))
{
keyx = keyx -1;
}
else if (glutKeyIsDown('e'))
{
keyy = keyy +1;
}
else if (glutKeyIsDown('q'))
{
keyy = keyy -1;
}
else if (glutKeyIsDown('r'))
{
exit(0);
}
// Clear the screen____________________________________
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
mat4 total, modelView, camMatrix;
printError("pre display");
vec3 pos = SetVector(keyx,keyy,keyz);
vec3 up = SetVector(0,1,0);
//Mouse control_____________________________________________
//fmin and fmax doesn't really make sense but looks good.
GLfloat mousexlocal = 0;
GLfloat mouseylocal = 0;
if (mousex < 350 || mousex > 250)
{
mousexlocal = 300-mousex;
}
else
{
mousexlocal = 0;
}
deltaphi = deltaphi + deltaphi*-mousexlocal;
deltaphi = fmin(0.0001,deltaphi);
deltaphi = fmax(deltaphi,2 * PI - 0.0001);
forward = MultVec3(Ry(deltaphi*-mousexlocal), forward);
vec3 crossvec = CrossProduct(forward,up);
if (mousey < 350 || mousey > 250)
{
mouseylocal = 300-mousey;
}
else
{
mouseylocal = 0;
}
deltatheta = deltatheta + deltatheta* -mouseylocal;
deltatheta = fmin(0.0001,deltatheta);
deltatheta = fmax(deltatheta,2*PI - 0.0001);
forward = MultVec3( ArbRotate(crossvec,deltatheta*-mouseylocal), forward);
//Create camera matrix_____________________________________________
GLfloat x = cos(t)*5 + 35;//Mult(Ry(2*5),x);
GLfloat z = sin(t)*5 + 75;//Mult(Ry
//GLfloat z = 65;
GLfloat y = getHeight(&ttex,x,z) + 0.8;
// pos.y = pos.yy;
camMatrix = lookAtv(pos,VectorAdd(forward,pos),up);
modelView = IdentityMatrix();
total = Mult(camMatrix, modelView);
glUseProgram(program);
glUniformMatrix4fv(glGetUniformLocation(program, "mdlMatrix"), 1, GL_TRUE, total.m);
glBindTexture(GL_TEXTURE_2D, tex1); // Bind Our Texture tex1
DrawModel(tm, program,"inPosition", "inNormal", "inTexCoord");
//total = Mult(Ry(2*t),T(10,0,0));
total = T(x,y,z);
total = Mult(camMatrix,total);
glUniformMatrix4fv(glGetUniformLocation(program, "mdlMatrix"), 1, GL_TRUE, total.m);
glBindTexture(GL_TEXTURE_2D, tex2); // Bind Our Texture tex1
DrawModel(bunny, program, "inPosition", "inNormal", "inTexCoord");
printError("display 2");
glutSwapBuffers();
}