X-Git-Url: https://git.ucc.asn.au/?p=atyndall%2Fcits2231.git;a=blobdiff_plain;f=scene.c;h=1aef0618bebde3d93e705997be47ac4ad5b04bc7;hp=c737e3d8c7d13598c6db33db2c8f8236848ee604;hb=95c7ea9c6b82ae8b11cb360f0dcb8cc971ef814e;hpb=390fa64aa90506384f746f49072708e3c74c5c56 diff --git a/scene.c b/scene.c index c737e3d..1aef061 100644 --- a/scene.c +++ b/scene.c @@ -10,6 +10,7 @@ #include #include #include +#include #include "bitmap.h" @@ -118,7 +119,15 @@ static GLfloat floorVertices[4][3] = { static GLfloat lightColor[] = {1.0, 1.0, 1.0, 1.0}; // White light static GLfloat lightPosition[4]; -static float lightAngle = 10.0, lightHeight = 20; + +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 @@ -475,8 +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); @@ -498,8 +507,59 @@ 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 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(); } /** @@ -512,7 +572,7 @@ void drawFloor() { // glEnable(GL_TEXTURE_2D); //} - glBegin(GL_QUADS); + /*glBegin(GL_QUADS); glTexCoord2f(0.0, 0.0); glVertex3fv(floorVertices[0]); glTexCoord2f(0.0, 16.0); @@ -521,7 +581,9 @@ void drawFloor() { 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); @@ -530,6 +592,39 @@ void drawFloor() { glEnable(GL_LIGHTING); } +int drawFloorRecurse = 2; +/*void drawSquare(GLfloat x1, GLfloat y1, GLfloat x2, GLfloat y2) { + drawSquare(0, x1, y1, x2, y2); +}*/ + +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 */ @@ -537,8 +632,8 @@ void display() { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glLoadIdentity(); gluLookAt( - 40.0, 20.0, 60.0, /* eye is at (0,8,60) */ - 0.0, 0.0, 0.0, /* center is at (0,0,0) */ + 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 */ ); @@ -549,6 +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); @@ -557,16 +656,13 @@ void display() { glDisable(GL_BLEND); glPushMatrix(); - glLoadIdentity(); - glColor3f(1.0, 0.0, 1.0); - glTranslatef(0.0, 0.0, -1.0); - - glutSolidTeapot(1); // Draw teapot for test + + //glTranslatef(0.0, 0.0, 0.0); + glutWireTeapot(30); // Draw teapot for test glPopMatrix(); glPushMatrix(); glDisable(GL_LIGHTING); - glLoadIdentity(); glColor3f(1.0, 1.0, 1.0); /* Draw a yellow ball at the light source. */ @@ -586,12 +682,13 @@ void display() { */ void init() { glMatrixMode(GL_PROJECTION); + glLoadIdentity(); gluPerspective( - 60.0, /* field of view in degree */ - 1.0, /* aspect ratio */ - 0.0, /* Z near */ - 900.0 /* Z far */ + 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); @@ -602,6 +699,7 @@ void init() { glEnable(GL_LIGHTING); glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); } /** @@ -636,13 +734,15 @@ int main(int argc, char **argv) { glDepthFunc(GL_LEQUAL); // the type glEnable(GL_CULL_FACE); glEnable(GL_TEXTURE_2D); - glLineWidth(3.0); + glLineWidth(1.0); glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); glutReshapeFunc(windowReshape); glutDisplayFunc(display); - glutMouseFunc(mouse); + //glutMouseFunc(mouse); + //glutMotionFunc(motion); + glutIdleFunc(idle); makeMenu();