void obp_trackball_rot () {
int xpos, ypos;
glfwGetMousePos(&xpos, &ypos);
glfwSetMousePos(obp_window_width /2, obp_window_height /2);
verticalAngle += mouseRotateSpeed * float(obp_window_width /2 - xpos);
horizontalAngle += mouseRotateSpeed * float(obp_window_height /2 - ypos);
if (horizontalAngle >= 89.99) horizontalAngle = 89.99;
if (horizontalAngle <= -89.99) horizontalAngle = -89.99;
float initial_distance = 10;
float distance = initial_distance - 1.0f * glfwGetMouseWheel();
float camX = distance * -sinf(verticalAngle * (PI / 180)) * cosf((horizontalAngle) * (PI / 180));
float camY = distance * -sinf((horizontalAngle) * (PI / 180));
float camZ = -distance * cosf((verticalAngle) * (PI / 180)) * cosf((horizontalAngle) * (PI / 180));
ProjectionMatrix = glm::perspective(initial_fov, float(obp_window_width) / float(obp_window_height), 0.1f, 100.0f);
ViewMatrix = glm::lookAt(
glm::vec3(camX, camY, camZ),
glm::vec3(0.0f, 0.0f, 0.0f),
glm::vec3(0.0f, 1.0f, 0.0f));
}
InputHandler::InputHandler(View* v):
view(v)
{
#ifndef __glfw3_h__
mouse_wheel = glfwGetMouseWheel();
#else
mouse_wheel = 0;
#endif
}
//SGenum SG_EXPORT sgmCoreMouseSetWheel(void* mouse, SGint w);
SGenum SG_EXPORT sgmCoreMouseGetWheel(void* mouse, SGint* w)
{
if(mouse == NULL)
return SG_OK; // SG_INVALID_VALUE
*w = glfwGetMouseWheel();
return SG_OK;
}
void xpl_input_get_scroll_deltas(xivec2 *deltas) {
int scroll_position = glfwGetMouseWheel();
if (last_scroll_position == INT16_MIN) {
deltas->x = 0;
deltas->y = 0;
}
deltas->x = 0;
deltas->y = scroll_position - last_scroll_position;
last_scroll_position = scroll_position;
}
void init_events()
{
last_wheel_pos = glfwGetMouseWheel();
glfwSetKeyCallback(keycallback);
glfwSetMouseButtonCallback(mousebuttoncallback);
glfwSetMousePosCallback(mouse_move_callback);
glfwSetCharCallback(charcallback);
glfwSetMouseWheelCallback(mouse_wheel_callback);
glfwSetWindowSizeCallback(window_size_callback);
}
// update the scene based on the time elapsed since last update
static void Update(float secondsElapsed) {
//rotate the first instance in `gInstances`
const GLfloat degreesPerSecond = 180.0f;
gDegreesRotated += secondsElapsed * degreesPerSecond;
while(gDegreesRotated > 360.0f) gDegreesRotated -= 360.0f;
gInstances.front().transform = glm::rotate(glm::mat4(), gDegreesRotated, glm::vec3(0,1,0));
//move position of camera based on WASD keys, and XZ keys for up and down
const float moveSpeed = 4.0; //units per second
if(glfwGetKey('S')){
gCamera.offsetPosition(secondsElapsed * moveSpeed * -gCamera.forward());
} else if(glfwGetKey('W')){
gCamera.offsetPosition(secondsElapsed * moveSpeed * gCamera.forward());
}
if(glfwGetKey('A')){
gCamera.offsetPosition(secondsElapsed * moveSpeed * -gCamera.right());
} else if(glfwGetKey('D')){
gCamera.offsetPosition(secondsElapsed * moveSpeed * gCamera.right());
}
if(glfwGetKey('Z')){
gCamera.offsetPosition(secondsElapsed * moveSpeed * -glm::vec3(0,1,0));
} else if(glfwGetKey('X')){
gCamera.offsetPosition(secondsElapsed * moveSpeed * glm::vec3(0,1,0));
}
//move light
if(glfwGetKey('1'))
gLight.position = gCamera.position();
// change light color
if(glfwGetKey('2'))
gLight.intensities = glm::vec3(1,0,0); //red
else if(glfwGetKey('3'))
gLight.intensities = glm::vec3(0,1,0); //green
else if(glfwGetKey('4'))
gLight.intensities = glm::vec3(1,1,1); //white
//rotate camera based on mouse movement
const float mouseSensitivity = 0.1f;
int mouseX, mouseY;
glfwGetMousePos(&mouseX, &mouseY);
gCamera.offsetOrientation(mouseSensitivity * mouseY, mouseSensitivity * mouseX);
glfwSetMousePos(0, 0); //reset the mouse, so it doesn't go out of the window
//increase or decrease field of view based on mouse wheel
const float zoomSensitivity = -0.2f;
float fieldOfView = gCamera.fieldOfView() + zoomSensitivity * (float)glfwGetMouseWheel();
if(fieldOfView < 5.0f) fieldOfView = 5.0f;
if(fieldOfView > 130.0f) fieldOfView = 130.0f;
gCamera.setFieldOfView(fieldOfView);
glfwSetMouseWheel(0);
}
// update the scene based on the time elapsed since last update
void Update(float secondsElapsed) {
//rotate the cube
const GLfloat degreesPerSecond = 180.0f;
gDegreesRotated += secondsElapsed * degreesPerSecond;
while(gDegreesRotated > 360.0f) gDegreesRotated -= 360.0f;
//move position of camera based on WASD keys, and XZ keys for up and down
const float moveSpeed = 2.0; //units per second
if(glfwGetKey('S')){
gCamera.offsetPosition(secondsElapsed * moveSpeed * -gCamera.forward());
} else if(glfwGetKey('W')){
gCamera.offsetPosition(secondsElapsed * moveSpeed * gCamera.forward());
}
if(glfwGetKey('A')){
gCamera.offsetPosition(secondsElapsed * moveSpeed * -gCamera.right());
} else if(glfwGetKey('D')){
gCamera.offsetPosition(secondsElapsed * moveSpeed * gCamera.right());
}
if(glfwGetKey('Z')){
gCamera.offsetPosition(secondsElapsed * moveSpeed * -glm::vec3(0,1,0));
} else if(glfwGetKey('X')){
gCamera.offsetPosition(secondsElapsed * moveSpeed * glm::vec3(0,1,0));
}
//rotate camera based on mouse movement
const float mouseSensitivity = 0.1;
int mouseX, mouseY;
glfwGetMousePos(&mouseX, &mouseY);
gCamera.offsetOrientation(mouseSensitivity * mouseY, mouseSensitivity * mouseX);
glfwSetMousePos(0, 0); //reset the mouse, so it doesn't go out of the window
//increase or decrease field of view based on mouse wheel
const float zoomSensitivity = -0.2;
float fieldOfView = gCamera.fieldOfView() + zoomSensitivity * (float)glfwGetMouseWheel();
if(fieldOfView < 5.0f) fieldOfView = 5.0f;
if(fieldOfView > 130.0f) fieldOfView = 130.0f;
gCamera.setFieldOfView(fieldOfView);
glfwSetMouseWheel(0);
}
void Input::update()
{
m_mouse.z = glfwGetMouseWheel();
glfwSetMouseWheel(0);
if (m_mouseVisible == false)
{
#ifdef __APPLE__
CGGetLastMouseDelta(&m_mouse.x, &m_mouse.y);
GLFWvidmode mode;
glfwGetDesktopMode(&mode);
CGPoint p;
p.x = m_mouseMiddleX;
p.y = m_mouseMiddleY;
CGWarpMouseCursorPosition(p);
#else
glfwGetMousePos(&m_mouse.x, &m_mouse.y);
m_mouse.x -= m_mouseMiddleX;
m_mouse.y -= m_mouseMiddleY;
glfwSetMousePos(m_mouseMiddleX, m_mouseMiddleY);
#endif
}
else
{
glfwGetMousePos(&m_mouse.x, &m_mouse.y);
}
m_mouse.b = 0;
if (glfwGetMouseButton(GLFW_MOUSE_BUTTON_1))
{
m_mouse.b |= 1;
}
if (glfwGetMouseButton(GLFW_MOUSE_BUTTON_2))
{
m_mouse.b |= 2;
}
}
float diddy_mouseZ() {
float ret = glfwGetMouseWheel() - diddy_mouseWheel;
diddy_mouseWheel = glfwGetMouseWheel();
return ret;
}
int main( int argc, char **argv )
{
int width = 1024, height=768;
// Initialise GLFW
if( !glfwInit() )
{
fprintf( stderr, "Failed to initialize GLFW\n" );
exit( EXIT_FAILURE );
}
// Open a window and create its OpenGL context
if( !glfwOpenWindow( width, height, 0,0,0,0, 24,0, GLFW_WINDOW ) )
{
fprintf( stderr, "Failed to open GLFW window\n" );
glfwTerminate();
exit( EXIT_FAILURE );
}
glfwSetWindowTitle( "imgui sample imguiRenderGL2" );
GLenum err = glewInit();
if (GLEW_OK != err)
{
/* Problem: glewInit failed, something is seriously wrong. */
fprintf(stderr, "Error: %s\n", glewGetErrorString(err));
exit( EXIT_FAILURE );
}
// Ensure we can capture the escape key being pressed below
glfwEnable( GLFW_STICKY_KEYS );
// Enable vertical sync (on cards that support it)
glfwSwapInterval( 1 );
// Init UI
if (!imguiRenderGLInit("DroidSans.ttf"))
{
fprintf(stderr, "Could not init GUI renderer.\n");
exit(EXIT_FAILURE);
}
glClearColor(0.8f, 0.8f, 0.8f, 1.f);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glDisable(GL_DEPTH_TEST);
// imgui states
bool checked1 = false;
bool checked2 = false;
bool checked3 = true;
bool checked4 = false;
float value1 = 50.f;
float value2 = 30.f;
int scrollarea1 = 0;
int scrollarea2 = 0;
// glfw scrolling
int glfwscroll = 0;
do
{
glfwGetWindowSize(&width, &height);
glViewport(0, 0, width, height);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// Mouse states
unsigned char mousebutton = 0;
int currentglfwscroll = glfwGetMouseWheel();
int mscroll = 0;
if (currentglfwscroll < glfwscroll)
mscroll = 2;
if (currentglfwscroll > glfwscroll)
mscroll = -2;
glfwscroll = currentglfwscroll;
int mousex; int mousey;
glfwGetMousePos(&mousex, &mousey);
mousey = height - mousey;
int leftButton = glfwGetMouseButton( GLFW_MOUSE_BUTTON_LEFT );
int rightButton = glfwGetMouseButton( GLFW_MOUSE_BUTTON_RIGHT );
int middleButton = glfwGetMouseButton( GLFW_MOUSE_BUTTON_MIDDLE );
int toggle = 0;
if( leftButton == GLFW_PRESS )
mousebutton |= IMGUI_MBUT_LEFT;
// Draw UI
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
float projection[16] = { 2.f/width, 0.f, 0.f, 0.f,
0.f, 2.f/height, 0.f, 0.f,
0.f, 0.f, -2.f, 0.f,
-1.f, -1.f, -1.f, 1.f };
glLoadMatrixf(projection);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glUseProgram(0);
imguiBeginFrame(mousex, mousey, mousebutton, mscroll);
imguiBeginScrollArea("Scroll area", 10, 10, width / 5, height - 20, &scrollarea1);
imguiSeparatorLine();
imguiSeparator();
imguiButton("Button");
imguiButton("Disabled button", false);
imguiItem("Item");
imguiItem("Disabled item", false);
toggle = imguiCheck("Checkbox", checked1);
if (toggle)
checked1 = !checked1;
toggle = imguiCheck("Disabled checkbox", checked2, false);
if (toggle)
checked2 = !checked2;
toggle = imguiCollapse("Collapse", "subtext", checked3);
if (checked3)
{
imguiIndent();
imguiLabel("Collapsible element");
imguiUnindent();
}
if (toggle)
checked3 = !checked3;
toggle = imguiCollapse("Disabled collapse", "subtext", checked4, false);
if (toggle)
checked4 = !checked4;
imguiLabel("Label");
imguiValue("Value");
imguiSlider("Slider", &value1, 0.f, 100.f, 1.f);
imguiSlider("Disabled slider", &value2, 0.f, 100.f, 1.f, false);
imguiIndent();
imguiLabel("Indented");
imguiUnindent();
imguiLabel("Unindented");
imguiEndScrollArea();
imguiBeginScrollArea("Scroll area", 20 + width / 5, 500, width / 5, height - 510, &scrollarea2);
imguiSeparatorLine();
imguiSeparator();
for (int i = 0; i < 100; ++i)
imguiLabel("A wall of text");
imguiEndScrollArea();
imguiEndFrame();
imguiDrawText(30 + width / 5 * 2, height - 20, IMGUI_ALIGN_LEFT, "Free text", imguiRGBA(32,192, 32,192));
imguiDrawText(30 + width / 5 * 2 + 100, height - 40, IMGUI_ALIGN_RIGHT, "Free text", imguiRGBA(32, 32, 192, 192));
imguiDrawText(30 + width / 5 * 2 + 50, height - 60, IMGUI_ALIGN_CENTER, "Free text", imguiRGBA(192, 32, 32,192));
imguiDrawLine(30 + width / 5 * 2, height - 80, 30 + width / 5 * 2 + 100, height - 60, 1.f, imguiRGBA(32,192, 32,192));
imguiDrawLine(30 + width / 5 * 2, height - 100, 30 + width / 5 * 2 + 100, height - 80, 2.f, imguiRGBA(32, 32, 192, 192));
imguiDrawLine(30 + width / 5 * 2, height - 120, 30 + width / 5 * 2 + 100, height - 100, 3.f, imguiRGBA(192, 32, 32,192));
imguiDrawRoundedRect(30 + width / 5 * 2, height - 240, 100, 100, 5.f, imguiRGBA(32,192, 32,192));
imguiDrawRoundedRect(30 + width / 5 * 2, height - 350, 100, 100, 10.f, imguiRGBA(32, 32, 192, 192));
imguiDrawRoundedRect(30 + width / 5 * 2, height - 470, 100, 100, 20.f, imguiRGBA(192, 32, 32,192));
imguiDrawRect(30 + width / 5 * 2, height - 590, 100, 100, imguiRGBA(32, 192, 32, 192));
imguiDrawRect(30 + width / 5 * 2, height - 710, 100, 100, imguiRGBA(32, 32, 192, 192));
imguiDrawRect(30 + width / 5 * 2, height - 830, 100, 100, imguiRGBA(192, 32, 32,192));
imguiRenderGLDraw(width, height);
// Check for errors
GLenum err = glGetError();
if(err != GL_NO_ERROR)
{
fprintf(stderr, "OpenGL Error : %s\n", gluErrorString(err));
}
// Swap buffers
glfwSwapBuffers();
} // Check if the ESC key was pressed or the window was closed
while( glfwGetKey( GLFW_KEY_ESC ) != GLFW_PRESS &&
glfwGetWindowParam( GLFW_OPENED ) );
// Clean UI
imguiRenderGLDestroy();
// Close OpenGL window and terminate GLFW
glfwTerminate();
exit( EXIT_SUCCESS );
}
//rotated and add keyboard and mouse callback
void Update(float secondsElapsed) {
//change the axis that rotated
if (glfwGetKey('7')){
Axis =glm::vec3(1,0,0);
}
if (glfwGetKey('8')){
Axis =glm::vec3(0,0,1);
}
if (glfwGetKey('9')){
Axis =glm::vec3(0,1,0);
}
//press "T" to stop rotate
GLfloat degreesPerSecond = 20.0f;
if (glfwGetKey('T')){
degreesPerSecond = 0.0f;
}
gDegreesRotated += secondsElapsed * degreesPerSecond;
while (gDegreesRotated > 360.0f) gDegreesRotated -= 360.0f;
const float moveSpeed = 3.0;
if (glfwGetKey('S')) {
gCamera.offsetPositon(secondsElapsed * moveSpeed * -gCamera.forward());
} else if (glfwGetKey('W')){
gCamera.offsetPositon(secondsElapsed * moveSpeed * gCamera.forward());
} else if (glfwGetKey('A')) {
gCamera.offsetPositon(secondsElapsed * moveSpeed * -gCamera.right());
} else if (glfwGetKey('D')) {
gCamera.offsetPositon(secondsElapsed * moveSpeed * gCamera.right());
}
if (glfwGetKey('Z')) {
gCamera.offsetPositon(secondsElapsed* moveSpeed * -glm::vec3(0,1,0));
} else if (glfwGetKey('X')) {
gCamera.offsetPositon(secondsElapsed * moveSpeed * glm::vec3(0,1,0));
}
// change light color
if(glfwGetKey('1'))
gLight.intensities = glm::vec3(0.8, 0.3, 0.0); //red
else if(glfwGetKey('2'))
gLight.intensities = glm::vec3(0.0, 0.8, 0.2); //green
else if (glfwGetKey('3'))
gLight.intensities = glm::vec3(0.1, 0.3, 0.8);
else if(glfwGetKey('4'))
gLight.intensities = glm::vec3(1,1,1); //white
//mouse movement with camera
const float mouseSensitivity = 0.1;
int mouseX, mouseY;
glfwGetMousePos(&mouseX, &mouseY);
gCamera.offsetOrientation(mouseSensitivity* mouseY, mouseSensitivity* mouseX);
glfwSetMousePos(0,0);
//mouse wheel with field of view
const float zoomSensitivity = -0.8;
float fieldOfView = gCamera.fieldOfView() + zoomSensitivity *(float)glfwGetMouseWheel();
if(fieldOfView < 5.0f) fieldOfView = 5.0f;
if(fieldOfView > 130.0f) fieldOfView = 130.0f;
gCamera.setFieldOfView(fieldOfView);
if (glfwGetMouseButton(0)) //press left button to reset the Fov;
gCamera.setFieldOfView(50.0f);
glfwSetMouseWheel(0);
}
void PullInfo(){
printf("================================================================================\n");
int major, minor, rev;
glfwGetVersion(&major, &minor, &rev);
printf("GLFW version is %i.%i.%i\n", major, minor, rev);
int width, height;
glfwGetWindowSize(&width, &height);
printf("Window size is %i %i\n", width, height);
int status = glfwGetKey(GLFW_KEY_LCTRL);
if(status == GLFW_PRESS)
printf("Left control is pressed\n");
else
printf("Left control is released\n");
status = glfwGetMouseButton(GLFW_MOUSE_BUTTON_1);
if(status == GLFW_PRESS)
printf("Mouse button 1 is pressed\n");
else
printf("Mouse button 1 is released\n");
int x, y;
glfwGetMousePos(&x, &y);
printf("Mouse position is %i %i\n", x, y);
int wheel = glfwGetMouseWheel();
printf("Mouse wheel pos is %i\n", wheel);
double time = glfwGetTime();
printf("Time is %f\n", time);
glfwGetGLVersion(&major, &minor, &rev);
printf("GL version is %i.%i.%i\n", major, minor, rev);
int proc = glfwGetNumberOfProcessors();
printf("%i processors are available\n", proc);
unsigned int i;
for(i = 0; i<nb_params; i++)
printf(" - %-27s : %i\n", GetParamName(params[i]), glfwGetWindowParam(params[i]));
const char* extension = "MOZ_WEBGL_compressed_texture_s3tc";
printf("'%s' extension is %s.\n", extension, glfwExtensionSupported(extension) ? "supported" : "not supported");
extension = "GL_EXT_framebuffer_object";
printf("'%s' extension is %s.\n", extension, glfwExtensionSupported(extension) ? "supported" : "not supported");
extension = "glBindBuffer";
void* proc_addr = glfwGetProcAddress(extension);
printf("'%s' extension proc address is %p.\n", extension, proc_addr);
printf("Sleeping 1 sec...\n");
glfwSleep(1);
printf("...Done.\n");
printf("================================================================================\n");
#ifdef REPORT_RESULT
int result = 1;
REPORT_RESULT();
#endif
}
int Application::getMouseWheelPos()
{
return glfwGetMouseWheel();
}
int GLFWApp::GetMouseWheel()
{
return glfwGetMouseWheel();
}
void update(){
//update time
frames++;
thisTime = glfwGetTime();
diff = thisTime - lastTime;
if(doRotate){
degree += diff * 180.0f;
if(degree > 360.0f){
degree -= 360.0f;
}
}
lastTime = thisTime;
seconds += diff;
if( seconds > 1.0){
fps = frames;
frames = 0;
seconds = 0;
}
//handle keys
//forward, back
if(glfwGetKey('S')){
camera.offsetPosition( diff * moveSpeed * -camera.forward());
} else if(glfwGetKey('W')){
camera.offsetPosition( diff * moveSpeed * camera.forward());
}
//left, right
if(glfwGetKey('A')){
camera.offsetPosition( diff * moveSpeed * -camera.right());
} else if(glfwGetKey('D')){
camera.offsetPosition( diff * moveSpeed * camera.right());
}
//up, down
if(glfwGetKey('Z')){
camera.offsetPosition( diff * moveSpeed * -glm::vec3(0,1,0));
}else if(glfwGetKey('X')){
camera.offsetPosition( diff * moveSpeed * glm::vec3(0,1,0));
}
if(glfwGetKey(GLFW_KEY_SPACE)){
doRotate = false;
}else{
doRotate = true;
}
if(glfwGetKey('1')){
light.intensities = glm::vec3(1,1,1);
}
if(glfwGetKey('2')){
light.intensities = glm::vec3(1,0,0);
}
if(glfwGetKey('3')){
light.intensities = glm::vec3(0,1,0);
}
if(glfwGetKey('4')){
light.intensities = glm::vec3(0,0,1);
}
if(glfwGetKey('5')){
light.intensities = glm::vec3(0,0,0);
}
const float mouseSensitivity = 0.1;
int mouseX, mouseY;
glfwGetMousePos(&mouseX, &mouseY);
camera.offsetOrientation(mouseSensitivity * mouseY, mouseSensitivity * mouseX);
glfwSetMousePos(0, 0);
const float zoomSensitivity = -0.2;
float fieldOfView = camera.fieldOfView() + zoomSensitivity * (float)glfwGetMouseWheel();
if(fieldOfView < 5.0f) fieldOfView = 5.0f;
if(fieldOfView > 130.0f) fieldOfView = 130.0f;
camera.setFieldOfView(fieldOfView);
glfwSetMouseWheel(0);
}
void obp_fps () {
static double lastTime = glfwGetTime();
double currentTime = glfwGetTime();
float deltaTime = float(currentTime - lastTime);
int xpos, ypos;
glfwGetMousePos(&xpos, &ypos);
glfwSetMousePos(obp_window_width /2, obp_window_height /2);
horizontalAngle += mouseSpeed * float(obp_window_width /2 - xpos);
verticalAngle += mouseSpeed * float(obp_window_height /2 - ypos);
glm::vec3 direction(
cos(verticalAngle) * sin(horizontalAngle),
sin(verticalAngle),
cos(verticalAngle) * cos(horizontalAngle)
);
glm::vec3 right = glm::vec3(
sin(horizontalAngle - (PI /2.0f)),
0.0f,
cos(horizontalAngle - (PI /2.0f))
);
glm::vec3 up = glm::cross(right, direction);
if (glfwGetKey('W') == GLFW_PRESS) {
position += direction * deltaTime * speed;
}
if (glfwGetKey('S') == GLFW_PRESS) {
position -= direction * deltaTime * speed;
}
if (glfwGetKey('D') == GLFW_PRESS) {
position += right * deltaTime * speed;
}
if (glfwGetKey('A') == GLFW_PRESS) {
position -= right * deltaTime * speed;
}
if (glfwGetKey(GLFW_KEY_LSHIFT) == GLFW_PRESS) {
speed = 10.0f;
} else {
speed = 3.0f;
}
float fov = initial_fov - 5 * glfwGetMouseWheel();
ProjectionMatrix = glm::perspective(fov, float(obp_window_width) / float(obp_window_height), 0.1f, 100.0f);
ViewMatrix = glm::lookAt(
position,
position + direction,
up
);
lastTime = currentTime;
}
void InputHandler::handleKeys()
{
if(!view -> getFocus())
{
if(glfwGetKey(GLFW_KEY_RIGHT))
{
view -> setX(view -> getX() + SPEED);
}
if(glfwGetKey(GLFW_KEY_LEFT))
{
view -> setX(view -> getX() - SPEED);
}
if(glfwGetKey(GLFW_KEY_DOWN))
{
view -> setY(view -> getY() - SPEED);
}
if(glfwGetKey(GLFW_KEY_UP))
{
view -> setY(view -> getY() + SPEED);
}
if(glfwGetKey('P') && !key_was_pressed[static_cast<uint>('P')])
{
view -> setPaused(!view -> isPaused());
}
if(glfwGetKey('R') && !key_was_pressed[static_cast<uint>('R')])
{
view -> setReset(true);
}
#ifdef VIEW_DEBUG
if(glfwGetKey('G') && !key_was_pressed[static_cast<uint>('G')])
{
view -> display_grid = !view -> display_grid;
}
#endif
#ifndef __glfw3_h__
int tmp = glfwGetMouseWheel();
if(mouse_wheel != tmp)
{
view -> setDistance(view -> getDistance() - VIEW_Z_SPEED * (tmp-mouse_wheel));
mouse_wheel = tmp;
}
#else
double tmpx, tmpy;
glfwGetScrollOffset(view -> getWindow(), &tmpx, &tmpy);
if (tmpy)
{
view -> setDistance(view -> getDistance() - VIEW_Z_SPEED * tmpy);
}
#endif
}
else
{
TextField* focus = view -> getFocus();
if(glfwGetKey(GLFW_KEY_BACKSPACE) && !key_was_pressed[GLFW_KEY_BACKSPACE])
{
std::string text = focus -> getText();
if(text.length() > 0)
{
focus -> setText( text.erase(text.length()-1) );
}
}
else if(glfwGetKey(GLFW_KEY_ENTER) && !key_was_pressed[GLFW_KEY_ENTER])
{
view -> setUserInput(focus -> getText());
focus -> setText("");
}
else
{
char tempChar = '\0';
for(int c = 'A'; c<='Z'; ++c)
{
if(isCharPressed(c)) tempChar = c;
if(isCharPressed(c - 'A' + 'a')) tempChar = c - 'A' + 'a';
}
for(int c = '0'; c<='9'; ++c)
{
if(isCharPressed(c)) tempChar = c;
}
if(isCharPressed(' ')) tempChar = ' ';
if(isCharPressed('.')) tempChar = '.';
if(isCharPressed('-')) tempChar = '-';
if(isCharPressed('_')) tempChar = '_';
// Print symbol that is pressed last by index.
if(tempChar != '\0') focus -> setText(focus -> getText() + tempChar);
}
}
for(int i = 0; i < GLFW_KEY_LAST; ++i)
{
key_was_pressed[i] = glfwGetKey(i) ? true : false;
}
}
void gameDialog::Update() {
static int wheel = 0;
static bool inWater = false;
static bool inAir = false;
unsigned char bl;
// Detect usage of the mouse wheel
int newWheel = glfwGetMouseWheel();
if (newWheel != wheel) {
if (gMode.Get() == GameMode::CONSTRUCT) {
fBuildingBlocks->UpdateSelection(newWheel);
} else if (fDrawMap) {
float fact = 1.0f + (wheel-newWheel)/10.0f;
fMapWidth = fMapWidth * fact;
if (fMapWidth < 100)
fMapWidth = 100;
} else {
this->fRequestedCameraDistance += wheel-newWheel;
if (this->fRequestedCameraDistance < 0.0f)
this->fRequestedCameraDistance = 0.0f;
if (this->fRequestedCameraDistance > 20.0f)
this->fRequestedCameraDistance = 20.0f; // Don't allow unlimited third person view distance
}
wheel = newWheel;
}
if (gMode.Get() == GameMode::CONSTRUCT && (glfwGetKey(GLFW_KEY_DEL) == GLFW_PRESS || glfwGetKey('V') == GLFW_PRESS) && glfwGetMouseButton(GLFW_MOUSE_BUTTON_1) == GLFW_PRESS) {
int x, y;
glfwGetMousePos(&x, &y);
this->ClickOnBlock(x, y);
}
gMonsters.Cleanup();
gOtherPlayers.Cleanup();
while (ListenForServerMessages())
continue;
// Determine if player head is under water
bl = chunk::GetChunkAndBlock(gPlayer.x, gPlayer.y, gPlayer.z);
if (bl == BT_Air && fUnderWater) {
gSoundControl.SetSoundFxStatus(SoundControl::SEnvironmentUnderWater,false);
fUnderWater = false;
}
if ((bl == BT_Water || bl == BT_BrownWater) && !fUnderWater) {
gSoundControl.SetSoundFxStatus(SoundControl::SEnvironmentUnderWater,true);
fUnderWater = true;
// Not in water when under water
gSoundControl.SetSoundFxStatus(SoundControl::SPlayerFeetInWater,false);
inWater = false;
}
// Determine if feet are wet
// TODO: Change "magic number" for player height!
bl = chunk::GetChunkAndBlock(gPlayer.x, gPlayer.y, gPlayer.z-350);
if ((bl != BT_Water && bl != BT_BrownWater) && inWater && !fUnderWater) {
gSoundControl.SetSoundFxStatus(SoundControl::SPlayerFeetInWater,false);
inWater = false;
}
if ((bl == BT_Water || bl == BT_BrownWater) && !inWater && !fUnderWater) {
gSoundControl.SetSoundFxStatus(SoundControl::SPlayerFeetInWater,true);
inWater = true;
}
// TODO: Change "magic number" for player height!
bl = chunk::GetChunkAndBlock(gPlayer.x, gPlayer.y, gPlayer.z-400);
if (bl != BT_Air && inAir) {
gSoundControl.SetSoundFxStatus(SoundControl::SPlayerInAir,false);
inAir = false;
}
if (bl == BT_Air && !inAir) {
gSoundControl.SetSoundFxStatus(SoundControl::SPlayerInAir,true);
inAir = true;
}
this->UpdateCameraPosition();
gGameDialog.UpdateRunningStatus(false);
if (Options::fgOptions.fFullScreen) {
// Full screen, which means mouse is usually disabled. But there are cases when it is needed.
bool showMouseFullscreen = false;
static bool wasShowingMouse = false;
if ((fShowMainDialog && !fHideDialog) || gMode.Get() == GameMode::CONSTRUCT || fShowInventory)
showMouseFullscreen = true;
if (wasShowingMouse && !showMouseFullscreen) {
glfwDisable(GLFW_MOUSE_CURSOR);
wasShowingMouse = false;
}
if (!wasShowingMouse && showMouseFullscreen) {
glfwEnable(GLFW_MOUSE_CURSOR);
wasShowingMouse = true;
}
}
this->UpdateEffect();
gChunkProcess.Poll(); // Update all results
}
// Moves the camera based on what keypresses and mouse movements have happened
void Fengine_camera::move_camera()
{
// glfwGetTime is called only once, the first time this function is called
static double last_time = glfwGetTime();
// Compute time difference between current and last frame
double current_time = glfwGetTime();
float delta_time = float(current_time - last_time);
// Get mouse position
int xpos = 0;
int ypos = 0;
glfwGetMousePos(&xpos, &ypos);
int width = 0;
int height = 0;
glfwGetWindowSize(&width, &height);
// Reset mouse position for next frame
glfwSetMousePos(width/2, height/2);
// Compute new orientation
m_horizontal_angle += m_mouse_speed * float(width/2 - xpos);
m_vertical_angle += m_mouse_speed * float(height/2 - ypos);
// Direction : Spherical coordinates to Cartesian coordinates conversion
vec3 direction(
cos(m_vertical_angle) * sin(m_horizontal_angle),
sin(m_vertical_angle),
cos(m_vertical_angle) * cos(m_horizontal_angle)
);
// Right vector
vec3 right = vec3(
sin(m_horizontal_angle - 3.14f/2.0f),
0,
cos(m_horizontal_angle - 3.14f/2.0f)
);
// Up vector
m_up = cross( right, direction );
// Move forward
if (glfwGetKey( 'W' ) == GLFW_PRESS)
{
m_position += direction * delta_time * m_speed;
}
// Move backward
if (glfwGetKey( 'S' ) == GLFW_PRESS)
{
m_position -= direction * delta_time * m_speed;
}
// Strafe right
if (glfwGetKey( 'D' ) == GLFW_PRESS)
{
m_position += right * delta_time * m_speed;
}
// Strafe left
if (glfwGetKey( 'A' ) == GLFW_PRESS)
{
m_position -= right * delta_time * m_speed;
}
float fov = m_initial_fov - 5 * glfwGetMouseWheel();
// Projection matrix : 45° Field of View, 4:3 ratio, display range : 0.1 unit <-> 100 units
m_projection_mat = perspective(fov, m_perspective, 0.1f, 100.0f);
//cout << "Position of cam: " <<m_position.x << " " << m_position.y << " " << m_position.z << endl;
//cout << "Last time:" << last_time << endl;
//cout << "Direction" << direction.x << " " << direction.y << " " << direction.z << endl;
// Camera matrix
m_object_matrix = lookAt(
m_position, //Set the cameras position
m_position + direction, //Looks at the same position but in the direction we calculated
m_up
);
// For the next frame, the "last time" will be "now"
last_time = current_time;
}
int main (int argc, const char * argv[])
{
TwBar *myBar;
float bgColor[] = { 0.0f, 0.0f, 0.0f, 0.1f };
glm::mat4 mat;
float axis[] = { 0.7f, 0.7f, 0.7f }; // initial model rotation
float angle = 0.8f;
double FT = 0;
double FPS = 0;
double starting = 0.0;
double ending = 0.0;
int rate = 0;
int fr = 0;
zNear = 0.1f;
zFar = 100.0f;
FOV = 45.0f;
// Current time
double time = 0;
// initialise GLFW
int running = GL_TRUE;
if (!glfwInit()) {
exit(EXIT_FAILURE);
}
//only for OpenGL 2.1
#ifdef USE_OPENGL21
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MAJOR, 2);
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MINOR, 1);
#endif
//Only for OpenGL 3.2
#ifdef USE_OPENGL32
glfwOpenWindowHint(GLFW_FSAA_SAMPLES, 4);
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MAJOR, 3);
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MINOR, 2);
glfwOpenWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
glfwOpenWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
glfwOpenWindowHint(GLFW_OPENGL_DEBUG_CONTEXT, 1);
#endif
GLFWvidmode mode;
glfwGetDesktopMode(&mode);
if( !glfwOpenWindow(windowWidth, windowHeight, mode.RedBits, mode.GreenBits, mode.BlueBits, 0, 32, 0, GLFW_WINDOW /* or GLFW_FULLSCREEN */) )
{
glfwTerminate();
exit(EXIT_FAILURE);
}
glfwEnable(GLFW_MOUSE_CURSOR);
glfwEnable(GLFW_KEY_REPEAT);
// Ensure we can capture the escape key being pressed below
glfwEnable( GLFW_STICKY_KEYS );
glfwSetMousePos(windowWidth/2, windowHeight/2);
glfwSetWindowTitle("Chapter-11");
// Initialize AntTweakBar
if ( !TwInit(TW_OPENGL_CORE, NULL))
{
fprintf(stderr,"AntweakBar initialiazation failed: %s\n",TwGetLastError());
exit(1);
}
// Create a tweak bar
myBar = TwNewBar("TweakBar");
//init GLEW and basic OpenGL information
// VERY IMPORTANT OTHERWISE GLEW CANNOT HANDLE GL3
#ifdef USE_OPENGL32
glewExperimental = true;
#endif
glewInit();
std::cout<<"\nUsing GLEW "<<glewGetString(GLEW_VERSION)<<std::endl;
if (GLEW_VERSION_2_1)
{
std::cout<<"\nYay! OpenGL 2.1 is supported and GLSL 1.2!\n"<<std::endl;
}
if (GLEW_VERSION_3_2)
{
std::cout<<"Yay! OpenGL 3.2 is supported and GLSL 1.5!\n"<<std::endl;
}
/*
This extension defines an interface that allows various types of data
(especially vertex array data) to be cached in high-performance
graphics memory on the server, thereby increasing the rate of data
transfers.
Chunks of data are encapsulated within "buffer objects", which
conceptually are nothing more than arrays of bytes, just like any
chunk of memory. An API is provided whereby applications can read
from or write to buffers, either via the GL itself (glBufferData,
glBufferSubData, glGetBufferSubData) or via a pointer to the memory.
*/
if (glewIsSupported("GL_ARB_vertex_buffer_object"))
std::cout<<"ARB VBO's are supported"<<std::endl;
else if (glewIsSupported("GL_APPLE_vertex_buffer_object"))
std::cout<<"APPLE VBO's are supported"<<std::endl;
else
std::cout<<"VBO's are not supported,program will not run!!!"<<std::endl;
/*
This extension introduces named vertex array objects which encapsulate
vertex array state on the client side. The main purpose of these
objects is to keep pointers to static vertex data and provide a name
for different sets of static vertex data.
By extending vertex array range functionality this extension allows multiple
vertex array ranges to exist at one time, including their complete sets of
state, in manner analogous to texture objects.
GenVertexArraysAPPLE creates a list of n number of vertex array object
names. After creating a name, BindVertexArrayAPPLE associates the name with
a vertex array object and selects this vertex array and its associated
state as current. To get back to the default vertex array and its
associated state the client should bind to vertex array named 0.
*/
if (glewIsSupported("GL_ARB_vertex_array_object"))
std::cout<<"ARB VAO's are supported\n"<<std::endl;
else if (glewIsSupported("GL_APPLE_vertex_array_object"))//this is the name of the extension for GL2.1 in MacOSX
std::cout<<"APPLE VAO's are supported\n"<<std::endl;
else
std::cout<<"VAO's are not supported, program will not run!!!\n"<<std::endl;
std::cout<<"Vendor: "<<glGetString (GL_VENDOR)<<std::endl;
std::cout<<"Renderer: "<<glGetString (GL_RENDERER)<<std::endl;
std::cout<<"Version: "<<glGetString (GL_VERSION)<<std::endl;
std::ostringstream stream1,stream2;
stream1 << glGetString(GL_VENDOR);
stream2 << glGetString(GL_RENDERER);
std::string vendor ="Title : Chapter-11 Vendor : " + stream1.str() + " Renderer : " +stream2.str();
const char *tit = vendor.c_str();
glfwSetWindowTitle(tit);
// Set GLFW event callbacks
// - Redirect window size changes to the callback function WindowSizeCB
glfwSetWindowSizeCallback(WindowSizeCB);
// - Directly redirect GLFW mouse button events to AntTweakBar
glfwSetMouseButtonCallback((GLFWmousebuttonfun)TwEventMouseButtonGLFW);
// - Directly redirect GLFW mouse position events to AntTweakBar
glfwSetMousePosCallback((GLFWmouseposfun)TwEventMousePosGLFW);
// - Directly redirect GLFW mouse wheel events to AntTweakBar
glfwSetMouseWheelCallback((GLFWmousewheelfun)TwEventMouseWheelGLFW);
// - Directly redirect GLFW key events to AntTweakBar
glfwSetKeyCallback((GLFWkeyfun)TwEventKeyGLFW);
// - Directly redirect GLFW char events to AntTweakBar
glfwSetCharCallback((GLFWcharfun)TwEventCharGLFW);
TwDefine("TweakBar label='Main TweakBar' alpha=0 help='Use this bar to control the objects of the scene.' ");
// Add 'wire' to 'myBar': it is a modifable variable of type TW_TYPE_BOOL32 (32 bits boolean). Its key shortcut is [w].
TwAddVarRW(myBar, "wireframe mode", TW_TYPE_BOOL32, &wireFrame," label='Wireframe mode' key=w help='Toggle wireframe display mode.' ");
// Add 'bgColor' to 'myBar': it is a modifable variable of type TW_TYPE_COLOR3F (3 floats color)
TwAddVarRW(myBar, "bgColor", TW_TYPE_COLOR3F, &bgColor, " label='Background color' ");
// Add 'Rotation' to 'myBar': this is a variable of type TW_TYPE_QUAT4F which defines the scene's orientation
TwAddVarRW(myBar, "SceneRotation", TW_TYPE_QUAT4F, &Rotation," label='Scene rotation' opened=true help='Change the scenes orientation.' ");
TwAddButton(myBar, "Reset", ResetView,NULL," label='Reset View' ");
TwAddVarRW(myBar, "Near Clip Plane", TW_TYPE_FLOAT, &zNear,"min=0.5 max=100 step=0.5 label='Near Clip' group='Projection Properties'");
TwAddVarRW(myBar, "Far Clip Plane", TW_TYPE_FLOAT, &zFar," min=0.5 max=1000 step=0.5 label='Far Clip' group='Projection Properties'");
TwAddVarRW(myBar, "Field of View", TW_TYPE_FLOAT, &FOV," label='FoV' readonly=true group='Projection Properties'");
TwAddVarRW(myBar, "MS per 1 Frame" , TW_TYPE_DOUBLE, &FPS, "label='MS per 1 Frame' readonly=true group='Frame Rate'");
TwAddVarRW(myBar, "Frames Per Second" , TW_TYPE_INT32, &rate, "label='FPS' readonly=true group='Frame Rate'");
TwAddVarRW(myBar, "vSYNC" , TW_TYPE_BOOL8, &SYNC, "label='vSync' readonly=true group='Frame Rate'");
// Enable depth test
glEnable(GL_DEPTH_TEST);
// Accept fragment if it closer to the camera than the former one
glDepthFunc(GL_LESS);
initPlane(); //initialize Plane
init3Dmodel(); // initialize 3D model
create_Bump_bar();
GLfloat rat = 0.001f;
if(SYNC == false)
{
rat = 0.001f;
}
else
{
rat = 0.01f;
}
// Initialize time
time = glfwGetTime();
double currentTime;
float lastTime = 0.0f;
int Frames = 0;
double LT = glfwGetTime();
starting = glfwGetTime();
setVSync(SYNC);
while (running) {
glClear( GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT );
glClearColor( bgColor[0], bgColor[1], bgColor[2], bgColor[3]); //black color
FOV = initialFoV - 5 * glfwGetMouseWheel();
if(camera == true)
{
glfwGetMousePos(&xpos,&ypos);
glfwSetMousePos(windowWidth/2, windowHeight/2);
horizAngle += mouseSpeedo * float(windowWidth/2 - xpos );
verticAngle += mouseSpeedo * float( windowHeight/2 - ypos );
}
glm::vec3 direction(cos(verticAngle) * sin(horizAngle),sin(verticAngle),cos(verticAngle) * cos(horizAngle));
glm::vec3 right = glm::vec3(sin(horizAngle - 3.14f/2.0f),0,cos(horizAngle - 3.14f/2.0f));
glm::vec3 up = glm::cross( right, direction );
currentTime = glfwGetTime();
float dTime = float(currentTime - lastTime);
lastTime = (float)currentTime;
// Move forward
if (glfwGetKey( GLFW_KEY_UP ) == GLFW_PRESS){
pos += direction * dTime* speedo;
}
// Move backward
if (glfwGetKey( GLFW_KEY_DOWN ) == GLFW_PRESS){
pos -= direction * dTime * speedo;
}
// Strafe right
if (glfwGetKey( GLFW_KEY_RIGHT ) == GLFW_PRESS){
pos += right * dTime * speedo;
}
//Strafe left
if (glfwGetKey( GLFW_KEY_LEFT ) == GLFW_PRESS){
pos -= right * dTime * speedo;
}
if (glfwGetKey(GLFW_KEY_SPACE) == GLFW_PRESS){
if(camera == false)
{
camera=true;
glfwSetMousePos(windowWidth/2, windowHeight/2);
glfwGetMousePos(&xpos,&ypos);
}
else
{
camera=false;
glfwSetMousePos(windowWidth/2, windowHeight/2);
glfwGetMousePos(&xpos,&ypos);
}
}
mat = ConvertQuaternionToMatrix(Rotation, mat);
glm::mat4 cube;
glm::mat4 translateMat = glm::mat4();
translateMat = glm::translate(translateMat,glm::vec3(5.0,3.0,4.0));
cube = mat * translateMat;
displayPlane(mat,pos,direction,up);
display3Dmodel(cube,mat,pos,direction,up);
// drawing the AntWeakBar
if (wireFrame)
{
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
TwDraw();
}
else
{
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
TwDraw();
}
fr++;
ending = glfwGetTime();
if(ending - starting >= 1)
{
rate = fr;
fr = 0;
starting = glfwGetTime();
}
double CT = glfwGetTime();
Frames++;
if(CT -LT >= 1.0)
{
FPS = 1000.0 / (double)Frames;
Frames = 0;
LT += 1.0f;
}
glfwSwapBuffers();
//check if ESC was pressed
running=!glfwGetKey(GLFW_KEY_ESC) && glfwGetWindowParam(GLFW_OPENED);
}
//close OpenGL window and terminate AntTweakBar and GLFW
TwTerminate();
glfwTerminate();
exit(EXIT_SUCCESS);
}
void AIE::FreeMovement(float a_fDeltaTime, AIE::mat4& a_rmFrame, float a_fSpeed, const AIE::vec4& a_rvUp /* = vec4 */)
{
// update mouse wheel
static int siPrevMouseWheel = 0;
int iMouseWheel = glfwGetMouseWheel();
int iMouseWheelDelta = iMouseWheel - siPrevMouseWheel;
siPrevMouseWheel = iMouseWheel;
// Get the camera's forward, right, up, and location vectors
AIE::vec4 vForward = a_rmFrame.row2;
AIE::vec4 vRight = a_rmFrame.row0;
AIE::vec4 vUp = a_rmFrame.row1;
AIE::vec4 vTranslation = a_rmFrame.row3;
// Translate camera
float fSpeed = glfwGetKey(GLFW_KEY_LSHIFT) == GLFW_PRESS ? a_fSpeed * 2 : a_fSpeed;
if (glfwGetKey('W') == GLFW_PRESS)
{
vTranslation += vForward * (a_fDeltaTime * fSpeed);
}
if (glfwGetKey('S') == GLFW_PRESS)
{
vTranslation -= vForward * (a_fDeltaTime * fSpeed);
}
if (glfwGetKey('D') == GLFW_PRESS)
{
vTranslation += vRight * (a_fDeltaTime * fSpeed);
}
if (glfwGetKey('A') == GLFW_PRESS)
{
vTranslation -= vRight * (a_fDeltaTime * fSpeed);
}
if (glfwGetKey('Q') == GLFW_PRESS)
{
vTranslation += vUp * (a_fDeltaTime * fSpeed);
}
if (glfwGetKey('E') == GLFW_PRESS)
{
vTranslation -= vUp * (a_fDeltaTime * fSpeed);
}
if (iMouseWheelDelta != 0)
{
vTranslation += vForward * (a_fDeltaTime * fSpeed * iMouseWheelDelta);
}
a_rmFrame.row3 = vTranslation;
// check for camera rotation
static bool sbMouseButtonDown = false;
if (glfwGetMouseButton(GLFW_MOUSE_BUTTON_2) == GLFW_PRESS)
{
static int siPrevMouseX = 0;
static int siPrevMouseY = 0;
if (sbMouseButtonDown == false)
{
sbMouseButtonDown = true;
glfwGetMousePos(&siPrevMouseX,&siPrevMouseY);
}
int iMouseX = 0, iMouseY = 0;
glfwGetMousePos(&iMouseX,&iMouseY);
int iDeltaX = iMouseX - siPrevMouseX;
int iDeltaY = iMouseY - siPrevMouseY;
siPrevMouseX = iMouseX;
siPrevMouseY = iMouseY;
AIE::mat4 mMat;
// pitch
if (iDeltaY != 0)
{
mMat.RotateAxis(-iDeltaY / 150.f, vRight);
vForward = mMat * vForward;
vUp = mMat * vUp;
vRight = mMat * vRight;
}
// yaw
if (iDeltaX != 0)
{
mMat.RotateAxis(-iDeltaX / 150.0f, a_rvUp);
vForward = mMat * vForward;
vUp = mMat * vUp;
vRight = mMat * vRight;
}
a_rmFrame.row0 = vRight;
a_rmFrame.row1 = vUp;
a_rmFrame.row2 = vForward;
}
else
{
sbMouseButtonDown = false;
}
}
void computeMatricesFromInputs(){
// glfwGetTime is called only once, the first time this function is called
static double lastTime = glfwGetTime();
// Compute time difference between current and last frame
double currentTime = glfwGetTime();
float deltaTime = float(currentTime - lastTime);
// Get mouse position
int xpos, ypos;
glfwGetMousePos(&xpos, &ypos);
// Reset mouse position for next frame
glfwSetMousePos(1024/2, 768/2);
// Compute new orientation
horizontalAngle += mouseSpeed * float(1024/2 - xpos );
verticalAngle += mouseSpeed * float( 768/2 - ypos );
// Direction : Spherical coordinates to Cartesian coordinates conversion
glm::vec3 direction(
cos(verticalAngle) * sin(horizontalAngle),
sin(verticalAngle),
cos(verticalAngle) * cos(horizontalAngle)
);
// Right vector
glm::vec3 right = glm::vec3(
sin(horizontalAngle - 3.14f/2.0f),
0,
cos(horizontalAngle - 3.14f/2.0f)
);
// Up vector
glm::vec3 up = glm::cross( right, direction );
multi = 1.f;
if (glfwGetKey( GLFW_KEY_LSHIFT ) == GLFW_PRESS)
{
multi = 3.f;
}
// Move forward
if (glfwGetKey( GLFW_KEY_UP ) == GLFW_PRESS || glfwGetKey( 'W' ) == GLFW_PRESS){
position += direction * deltaTime * speed * multi;
}
// Move backward
if (glfwGetKey( GLFW_KEY_DOWN ) == GLFW_PRESS || glfwGetKey( 'S' ) == GLFW_PRESS){
position -= direction * deltaTime * speed * multi;
}
// Strafe right
if (glfwGetKey( GLFW_KEY_RIGHT ) == GLFW_PRESS || glfwGetKey( 'D' ) == GLFW_PRESS){
position += right * deltaTime * speed * multi;
}
// Strafe left
if (glfwGetKey( GLFW_KEY_LEFT ) == GLFW_PRESS || glfwGetKey( 'A' ) == GLFW_PRESS){
position -= right * deltaTime * speed * multi;
}
float FoV = initialFoV - 5 * glfwGetMouseWheel();
// Projection matrix : 45° Field of View, 4:3 ratio, display range : 0.1 unit <-> 100 units
ProjectionMatrix = glm::perspective(FoV, 4.0f / 3.0f, 0.1f, 100.0f);
// Camera matrix
ViewMatrix = glm::lookAt(
position, // Camera is here
position+direction, // and looks here : at the same position, plus "direction"
up // Head is up (set to 0,-1,0 to look upside-down)
);
// For the next frame, the "last time" will be "now"
lastTime = currentTime;
}
int main(int argc, char *argv[])
{
char *shader = "mandelbrot (copy).frag";
if (argc > 1)
{
shader = argv[1];
}
glfwInit();
/*int major, minor, rev;
glfwGetGLVersion(&major, &minor, &rev);
printf("using openGL %d.%d.%d\n", major, minor, rev);*/
GLFWvidmode mode;
glfwGetDesktopMode( &mode );
window_width = mode.Width;
window_height = mode.Height;
printf("%dx%d\n", window_width, window_height);
//glfwOpenWindow(window_width, window_height, 5, 6, 5, 0, 8, 0, GLFW_FULLSCREEN);
glfwOpenWindow(mode.Width, mode.Height, mode.RedBits, mode.GreenBits, mode.BlueBits, 0, 0, 0, GLFW_FULLSCREEN);
// setup opengl perspective stuff.
glMatrixMode(GL_PROJECTION);
float aspect_ratio = ((float)window_height) / window_width;
glFrustum(.5, -.5, -.5 * aspect_ratio, .5 * aspect_ratio, 1, 50);
glDisable( GL_DEPTH_TEST );
glTranslatef(0.0, 0.0, -1.00);
glClearColor(0.0, 1.0, 1.0, 0.0);
// will create and set shader program.
GLhandleARB program = SetupFragmentShader(shader);
// get the location of all the uniforms
prepareUniforms(program);
// must call use program before setting uniforms values
glUseProgram(program);
uint param_i = 0;
parameters[WIDTH] = createParameter1i(program, "wW", window_width );
parameters[HEIGHT] = createParameter1i(program, "wH", window_height );
parameters[TIME] = createParameter1f(program, "time", 0.0 );
parameters[MINX] = createParameter1f(program, "minx", -2.0);
parameters[MINY] = createParameter1f(program, "miny", 1.0);
parameters[DELTA] = createParameter1f(program, "deltax", 3.0);
parameters[THETA] = createParameter1f(program, "theta", 1.0);
//synchParameters ( parameters );
/*for ( param_i = 0; param_i < NPARAMS; param_i++ )
{
Parameter *param = ¶meters[param_i];
switch ( param->utype )
{
case INT:
glUniform1i(param->loc, param->u.ival);
break;
case FLOAT:
glUniform1f(param->loc, param->u.fval);
break;
default:
break;
}
}*/
// set the dimension, must be after program is used.
//glUniform1i(wWLoc, window_width );
//glUniform1i(wHLoc, window_height );
printInstructions();
double frame_start = glfwGetTime();
double frame_time = 0.0;
double temp_time = 0.0;
//bool need_draw = true;
bool need_view_synch = true;
int mouseWheel = 0;
int mouseWheelDelta = 0;
double fIterations = (double)(iterations);
int mouseX, mouseY, curMouseX, curMouseY;
mouseX = mouseY = 0;
bool joystickPresent = glfwGetJoystickParam( GLFW_JOYSTICK_1, GLFW_PRESENT );
if(joystickPresent)
{
printf("Joystick present. Can be used to navigate in addition to mouse.\n");
}else
{
printf("no joystick present.\n");
}
// set up fonts
FTGLfont *font = NULL;
//font = ftglCreateBufferFont("/usr/share/fonts/truetype/freefont/FreeMono.ttf");
font = ftglCreatePixmapFont("/usr/share/fonts/truetype/freefont/FreeMono.ttf");
if( !font )
{
printf("failed to load font.");
}
ftglSetFontFaceSize(font, 50, 50);
//printf("%d\n", ftglGetFontError(font));
//ftglSetFontCharMap(font, ft_encoding_unicode);
//printf("%d\n", ftglGetFontError(font));
bool show_fps = true;
char text[256];
// keep on rendering the frame until escape is pressed.
while(glfwGetKey(GLFW_KEY_ESC) != GLFW_PRESS)
{
temp_time = glfwGetTime();
frame_time = temp_time - frame_start;
frame_start = temp_time;
// process input
if(glfwGetKey('E') == GLFW_PRESS)
{
printf("minx: %.31f\n", minx);
printf("miny: %.31f\n", miny);
printf("deltax: %.31f\n",deltax);
printf("deltay: %.31f\n",deltay);
printf("====================================\n");
}else if(glfwGetKey('P') == GLFW_PRESS)
{
saveFrameBuffer();
}else if(glfwGetKey('R') == GLFW_PRESS)
{
minx = -2.0;
miny = -1.0;
deltax = 3.0;
deltay = 2.0;
need_view_synch = true;
}else if(glfwGetKey('F') == GLFW_PRESS)
{
show_fps=~show_fps;
//printf("fps display toggled to: %d\n", show_fps);
}
else if(glfwGetKey(GLFW_KEY_RIGHT) == GLFW_PRESS)
{
fIterations += 5*(60*frame_time);
iterations = floor(fIterations);
need_view_synch = true;
}else if(glfwGetKey(GLFW_KEY_LEFT) == GLFW_PRESS)
{
if(iterations>1)
{
fIterations -= 5*(60*frame_time);
}
iterations = floor(fIterations);
need_view_synch = true;
}
// zooming using the arrow keys
if(glfwGetKey(GLFW_KEY_UP) == GLFW_PRESS)
{
zoomIn(2.0*zoom_factor*(frame_time*60.0));
need_view_synch = true;
}else if(glfwGetKey(GLFW_KEY_DOWN) == GLFW_PRESS)
{
zoomIn(-2.0*zoom_factor*(frame_time*60.0));
need_view_synch = true;
}
//changing the julia set constant
if(glfwGetKey('W') == GLFW_PRESS)
{
realc += .0025*frame_time*60.0;
need_view_synch = true;
}else if(glfwGetKey('S') == GLFW_PRESS)
{
realc -= .0025*frame_time*60.0;
need_view_synch = true;
}
if(glfwGetKey('A') == GLFW_PRESS)
{
imagc += .0025*frame_time*60.0;
need_view_synch = true;
}else if(glfwGetKey('D') == GLFW_PRESS)
{
imagc -= .0025*frame_time*60.0;
need_view_synch = true;
}
// changing the area visible (panning left and right)
glfwGetMousePos(&curMouseX, &curMouseY);
int mouseDeltax = curMouseX - mouseX;
int mouseDeltay = curMouseY - mouseY;
if(mouseDeltax||mouseDeltay)//if one of them is different
{
//printf("delta coordinates: (%d, %d)\n", mouseDeltax, mouseDeltay);
mouseX=curMouseX;
mouseY=curMouseY;
//printf("new mouse coordinates: (%d, %d)\n", x, y);
pan(zoom_factor*deltax*mouseDeltax/20.0, -1*zoom_factor*deltay*mouseDeltay/20.0);
need_view_synch = true;
}
if(joystickPresent)
{
float pos[4];
glfwGetJoystickPos(GLFW_JOYSTICK_1, pos, 4);
//the above function gives us bad results for my particular joystick :(, must fiddle around with numbers to get correct answer.
float xJoyPos = pos[0];//(pos[0]*32767)/128.0 - 1.0;
float yJoyPos = pos[1];//(pos[1]*32767)/128.0 + 1.0;
float zJoyPos = -1*pos[2];//-1*((pos[2]*32767)/128.0 - 1.0);
float rJoyPos = pos[3];
float temp = 0.0;
//printf("%f\n", xJoyPos);
if(xJoyPos>.02||xJoyPos<-.02)
{
temp = zoom_factor*xJoyPos*deltax*1.0*frame_time*60.0;
pan(temp, 0);
need_view_synch = true;
}
if(yJoyPos>.02||yJoyPos<-.02)
{
temp = zoom_factor*yJoyPos*deltay*1.0*frame_time*60.0;
pan(0, temp);
need_view_synch = true;
}
if(zJoyPos>.04||zJoyPos<-.04)
{
zoomIn(zJoyPos*scroll_zoom_factor*(frame_time*10.0));
need_view_synch = true;
}
if(rJoyPos>.02 || rJoyPos<-.02)
{
rotate( rJoyPos/5.0*frame_time );
need_view_synch = true;
}
unsigned char buttons[5];
glfwGetJoystickButtons(GLFW_JOYSTICK_1, buttons, 4);
if(buttons[0]==GLFW_PRESS)
{
saveFrameBuffer();
}
if(buttons[1]==GLFW_PRESS)
{
rotate( 0.35*frame_time );
need_view_synch = true;
}else if(buttons[2]==GLFW_PRESS)
{
rotate( -0.35*frame_time );
need_view_synch = true;
}
//printf("x:%f, y:%f\n", xJoyPos, yJoyPos);
}
// zooming using the mouse scroll
mouseWheelDelta = glfwGetMouseWheel() - mouseWheel;
mouseWheel = mouseWheel+mouseWheelDelta;
if(mouseWheelDelta != 0)
{
zoomIn(mouseWheelDelta*scroll_zoom_factor*(frame_time*60.0));
need_view_synch = true;
}
//printf("mouse wheel: %d\n", mouseWheelDelta);
if(need_view_synch)
{
synchVariableUniforms();
need_view_synch = false;
}
// update the time inside the shader for cool animations.
parameters[2].val.fval = frame_start;
parameters[2].needs_update = true;
synchParameters ( parameters );
//glUniform1f(timeLoc, frame_start);
// write fps and iterations to a string.
sprintf(text, "FPS: %4.1d; ITER: %d; ZOOMX: %-10.1f", (int)(floor(1.0/frame_time)), iterations, (3.0/deltax));
//sprintf("fps %f\n", 1.0/frame_time);
// clear the buffer
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
//since all calculations are being done in the fragment shader, all we draw is a surface.
glUseProgram(program);
glRects(-1, -1, 1, 1);
// render font on top of this?
if(show_fps != 0){
glUseProgram(0);
glColor3f(0.0f, 0.0f, 0.0f);
ftglRenderFont(font, text, FTGL_RENDER_ALL);
glUseProgram(program);
}
// note: swap buffers also updates the input events for glfw
glfwSwapBuffers();
}
// clean up the font and exit.
ftglDestroyFont(font);
return 1;
}