X-Git-Url: https://git.ucc.asn.au/?p=atyndall%2Fcits2231.git;a=blobdiff_plain;f=scene.c;h=1aef0618bebde3d93e705997be47ac4ad5b04bc7;hp=d57ce236c2cb3e1cd1d8059d647c2555bf57ee98;hb=95c7ea9c6b82ae8b11cb360f0dcb8cc971ef814e;hpb=2c476859ea065ecf70df3f54f2b88a519a02cece diff --git a/scene.c b/scene.c index d57ce23..1aef061 100644 --- a/scene.c +++ b/scene.c @@ -10,6 +10,7 @@ #include #include #include +#include #include "bitmap.h" @@ -109,6 +110,25 @@ char *dirDefault2 = "/cslinux/examples/CITS2231/project-files/models-textures"; char dataDir[200]; // Stores the directory name for the meshes and textures. +static GLfloat floorVertices[4][3] = { + { -1000.0, 0.0, 1000.0 }, + { 1000.0, 0.0, 1000.0 }, + { 1000.0, 0.0, -1000.0 }, + { -1000.0, 0.0, -1000.0 }, +}; + +static GLfloat lightColor[] = {1.0, 1.0, 1.0, 1.0}; // White light +static GLfloat lightPosition[4]; + +int moving, startx, starty; +int lightMoving = 0, lightStartX, lightStartY; + +/* Time varying or user-controled variables. */ +static float jump = 0.0; +static float lightAngle = 0.0, lightHeight = 20; +GLfloat angle = -150; /* in degrees */ +GLfloat angle2 = 30; /* in degrees */ + /** * Prints out error message when file cannot be read * @param fileName Name of file that could not be read @@ -464,8 +484,8 @@ void makeMenu() { * @param h New height */ void windowReshape(int w, int h) { - GLdouble near = -10.0; - GLdouble far = 10.0; + GLdouble near = -1000.0; + GLdouble far = 1000.0; glViewport(0, 0, (GLsizei) w, (GLsizei) h); glMatrixMode(GL_PROJECTION); @@ -487,28 +507,72 @@ void windowReshape(int w, int h) { * @param x Mouse x position * @param y Mouse y position */ -void mouse(int btn, int state, int x, int y) { +/*void mouse(int btn, int state, int x, int y) { +}*//* +static void +mouse(int button, int state, int x, int y) +{ + if (button == GLUT_LEFT_BUTTON) { + if (state == GLUT_DOWN) { + moving = 1; + startx = x; + starty = y; + } + if (state == GLUT_UP) { + moving = 0; + } + } + if (button == GLUT_MIDDLE_BUTTON) { + if (state == GLUT_DOWN) { + lightMoving = 1; + lightStartX = x; + lightStartY = y; + } + if (state == GLUT_UP) { + lightMoving = 0; + } + } } -static GLfloat floorVertices[4][3] = { - { -20.0, 0.0, 20.0 }, - { 20.0, 0.0, 20.0 }, - { 20.0, 0.0, -20.0 }, - { -20.0, 0.0, -20.0 }, -}; - -/* Draw a floor (possibly textured). */ static void -drawFloor(void) +motion(int x, int y) { + if (moving) { + angle = angle + (x - startx); + angle2 = angle2 + (y - starty); + startx = x; + starty = y; + glutPostRedisplay(); + } + if (lightMoving) { + lightAngle += (x - lightStartX)/40.0; + lightHeight += (lightStartY - y)/20.0; + lightStartX = x; + lightStartY = y; + glutPostRedisplay(); + } +}*/ + +void idle() { + angle = (int)(angle + 10) % 360; + //angle2 = (int)(angle2 + 10) % 360; + printf("Angle 1: %f, Angle 2: %f\n", angle, angle2); + sleep(25); + glutPostRedisplay(); +} + +/** + * Draw a floor. + */ +void drawFloor() { glDisable(GL_LIGHTING); //if (useTexture) { // glEnable(GL_TEXTURE_2D); //} - glBegin(GL_QUADS); + /*glBegin(GL_QUADS); glTexCoord2f(0.0, 0.0); glVertex3fv(floorVertices[0]); glTexCoord2f(0.0, 16.0); @@ -517,7 +581,9 @@ drawFloor(void) glVertex3fv(floorVertices[2]); glTexCoord2f(16.0, 0.0); glVertex3fv(floorVertices[3]); - glEnd(); + glEnd();*/ + +drawSquare(0, -1000, -1000, 1000, 1000); /*if (useTexture) { glDisable(GL_TEXTURE_2D); @@ -526,11 +592,38 @@ drawFloor(void) glEnable(GL_LIGHTING); } +int drawFloorRecurse = 2; +/*void drawSquare(GLfloat x1, GLfloat y1, GLfloat x2, GLfloat y2) { + drawSquare(0, x1, y1, x2, y2); +}*/ -static GLfloat lightColor[] = {1.0, 1.0, 1.0, 1.0}; /* green-tinted */ -static GLfloat lightPosition[4]; -static float lightAngle = 0.0, lightHeight = 20; +void drawSquare(int recurseLevel, GLfloat x1, GLfloat y1, GLfloat x2, GLfloat y2) { + + + if ( drawFloorRecurse != recurseLevel ) { + GLfloat xm = (x1 + x2) / 2.0; + GLfloat ym = (y1 + y2) / 2.0; + int rnew = recurseLevel + 1; + printf("Recursing to level %d\n", rnew); + + // Split into four sub-quads + drawSquare(rnew, x1, y1, xm, ym); + drawSquare(rnew, x1, ym, xm, y2); + drawSquare(rnew, xm, ym, x2, y2); + drawSquare(rnew, xm, y1, x2, ym); + + } else { + printf("Drawing (%f.10, %f.10) -> (%f.10, %f.10)\n", x1, y2, x2, y2); + glBegin(GL_QUADS); + glVertex3f(x1, 0.0, y1); + glVertex3f(x1, 0.0, y2); + glVertex3f(x2, 0.0, y2); + glVertex3f(x2, 0.0, y1); + glEnd(); + } + +} /** * Display function @@ -538,6 +631,11 @@ static float lightAngle = 0.0, lightHeight = 20; void display() { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glLoadIdentity(); + gluLookAt( + 0.0, 0.0, 60.0, /* eye is at (x,y,z) */ + 0.0, 0.0, 0.0, /* center is at (x,y,z) */ + 0.0, 1.0, 0.0 /* up is in postivie Y direction */ + ); /* Reposition the light source. */ lightPosition[0] = 12*cos(lightAngle); @@ -546,6 +644,10 @@ void display() { lightPosition[3] = 0.0; glPushMatrix(); + /* Perform scene rotations based on user mouse input. */ + glRotatef(angle2, 1.0, 0.0, 0.0); + glRotatef(angle, 0.0, 1.0, 0.0); + glLightfv(GL_LIGHT0, GL_POSITION, lightPosition); glEnable(GL_BLEND); @@ -553,11 +655,15 @@ void display() { drawFloor(); glDisable(GL_BLEND); - glutSolidTeapot(1); // Draw teapot for test + glPushMatrix(); + + //glTranslatef(0.0, 0.0, 0.0); + glutWireTeapot(30); // Draw teapot for test + glPopMatrix(); glPushMatrix(); glDisable(GL_LIGHTING); - glColor3f(1.0, 1.0, 0.0); + glColor3f(1.0, 1.0, 1.0); /* Draw a yellow ball at the light source. */ glTranslatef(lightPosition[0], lightPosition[1], lightPosition[2]); @@ -575,25 +681,15 @@ void display() { * init function; sets initial OpenGL state */ void init() { - glEnable(GL_CULL_FACE); - glEnable(GL_DEPTH_TEST); - glEnable(GL_TEXTURE_2D); - glLineWidth(3.0); - glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + gluPerspective( - 40.0, /* field of view in degree */ - 1.0, /* aspect ratio */ - 0.0, /* Z near */ - 900.0 /* Z far */ - ); - - glMatrixMode(GL_MODELVIEW); - gluLookAt( - 0.0, 8.0, 60.0, /* eye is at (0,8,60) */ - 0.0, 8.0, 0.0, /* center is at (0,8,0) */ - 0.0, 1.0, 0.0 /* up is in postivie Y direction */ - ); + 60.0, /* field of view in degree */ + 1.0, /* aspect ratio */ + -1000.0, /* Z near */ + 1000.0 /* Z far */ + ); glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, 1); glLightfv(GL_LIGHT0, GL_DIFFUSE, lightColor); @@ -601,6 +697,9 @@ void init() { glLightf(GL_LIGHT0, GL_LINEAR_ATTENUATION, 0.05); glEnable(GL_LIGHT0); glEnable(GL_LIGHTING); + + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); } /** @@ -633,12 +732,17 @@ int main(int argc, char **argv) { glClearDepth(1.0f); // Depth Buffer Setup glEnable(GL_DEPTH_TEST); // Enables Depth Testing glDepthFunc(GL_LEQUAL); // the type + glEnable(GL_CULL_FACE); + glEnable(GL_TEXTURE_2D); + glLineWidth(1.0); glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); glutReshapeFunc(windowReshape); glutDisplayFunc(display); - glutMouseFunc(mouse); + //glutMouseFunc(mouse); + //glutMotionFunc(motion); + glutIdleFunc(idle); makeMenu();