initial commit

gfx/robot.simple.cpp

@@ -0,0 +1,194 @@
+#include <SDL.h>
+#include <GL/gl.h>
+#include <GL/glu.h>
+#include <math.h>
+
+#define WIDTH 1024
+#define HEIGHT 768
+
+void color(float r, float g, float b)
+{
+	glColor4fv(
+			(float []){r, g, b, 1.0f});
+}
+
+void cube()
+{
+	glBegin(GL_QUADS);
+		glNormal3f(0.0f, 0.0f, 1.0f);
+		glVertex3f(-1.0f, -1.0f,  1.0f);
+		glVertex3f( 1.0f, -1.0f,  1.0f);
+		glVertex3f( 1.0f,  1.0f,  1.0f);
+		glVertex3f(-1.0f,  1.0f,  1.0f);
+
+		glNormal3f(0.0f, 0.0f, -1.0f);
+		glVertex3f(-1.0f, -1.0f, -1.0f);
+		glVertex3f(-1.0f,  1.0f, -1.0f);
+		glVertex3f( 1.0f,  1.0f, -1.0f);
+		glVertex3f( 1.0f, -1.0f, -1.0f);
+
+		glNormal3f(0.0f, -1.0f, 0.0f);
+		glVertex3f(-1.0f, -1.0f, -1.0f);
+		glVertex3f( 1.0f, -1.0f, -1.0f);
+		glVertex3f( 1.0f, -1.0f,  1.0f);
+		glVertex3f(-1.0f, -1.0f,  1.0f);
+
+		glNormal3f(0.0f, 1.0f, 0.0f);
+		glVertex3f(-1.0f,  1.0f, -1.0f);
+		glVertex3f(-1.0f,  1.0f,  1.0f);
+		glVertex3f( 1.0f,  1.0f,  1.0f);
+		glVertex3f( 1.0f,  1.0f, -1.0f);
+
+		glNormal3f(-1.0f, 0.0f, 0.0f);
+		glVertex3f(-1.0f, -1.0f, -1.0f);
+		glVertex3f(-1.0f, -1.0f,  1.0f);
+		glVertex3f(-1.0f,  1.0f,  1.0f);
+		glVertex3f(-1.0f,  1.0f, -1.0f);
+
+		glNormal3f(1.0f, 0.0f, 0.0f);
+		glVertex3f( 1.0f, -1.0f, -1.0f);
+		glVertex3f( 1.0f,  1.0f, -1.0f);
+		glVertex3f( 1.0f,  1.0f,  1.0f);
+		glVertex3f( 1.0f, -1.0f,  1.0f);
+	glEnd();
+}
+
+const float freq = 6.4f;
+
+void legs(float t, bool i)
+{
+	float x[2] = { 0.19f, -0.19f };
+
+	glPushMatrix();
+	glTranslatef(x[i], -0.1f, 0.0f);
+	glRotatef(cosf(t)*10.0f, 1.0f, 0.0f, 0.0f);
+	glTranslatef(0.0f, -0.7f, 0.0f);
+	glScalef(0.1f, 0.4f, 0.1f);
+	cube();
+	glPopMatrix();
+}
+
+void arms(float t, bool i)
+{
+	float x[2] = { 0.24f, -0.24f };
+	float r[2] = { -40.0f, 40.0f };
+
+	glPushMatrix();
+	glTranslatef(x[i], 0.4f, 0.0f);
+	glRotatef(cosf(t)*15.0f+r[i], 0.0f, 0.0f, 1.0f);
+	glTranslatef(0.0f, 0.3f, 0.0f);
+	glScalef(0.1f, 0.3f, 0.1f);
+	cube();
+	glPopMatrix();
+}
+
+void robot(float t)
+{
+	// head
+	//color(1.0f, 1.0f, 1.0f);
+	glPushMatrix();
+		glTranslatef(0.0f, 0.71f+0.05f*fabsf(sinf(t)), 0.04f);
+		glRotatef(-5.0f+10.0f*fabsf(cosf(t)), 1.0f, 0.0f, 0.0f);
+		glScalef(0.2f, 0.2f, 0.2f);
+		cube();
+	glPopMatrix();
+
+	// body
+	//color(0.5f, 0.5f, 1.0f);
+	glPushMatrix();
+		glTranslatef(0.0f, 0.05f*fabsf(sinf(t)), 0.0f);
+		glRotatef(-2.5f+5.0f*fabsf(cosf(t)), 0.0f, 1.0f, 0.0f);
+		glScalef(0.3f, 0.5f, 0.17f);
+		cube();
+	glPopMatrix();
+
+	// arms
+	//color(1.0f, 0.5f, 0.5f);
+	glPushMatrix();
+	arms(t, false);
+	arms(t, true);
+	glPopMatrix();
+	
+	// legs
+	//color(0.5f, 1.0f, 0.5f);
+	glPushMatrix();
+	legs(t, false);
+	legs(t+(M_PI/2.0f)*freq, true);
+	glPopMatrix();
+}
+
+int main()
+{
+	bool running = true;
+	SDL_Event event;
+	SDL_Surface * screen;
+	float time;
+	float rotation = 0.0f;
+	bool mousedown = false;
+
+	SDL_Init(SDL_INIT_EVERYTHING);
+
+	screen = SDL_SetVideoMode(WIDTH, HEIGHT, 32, SDL_OPENGL);
+	SDL_WM_SetCaption("Robot !", "");
+
+	glViewport(0, 0, WIDTH, HEIGHT);
+	glMatrixMode(GL_PROJECTION);
+	glLoadIdentity();
+	gluPerspective(45.0f, (float)WIDTH/(float)HEIGHT, 0.01f, 100.0f);
+
+	glMatrixMode(GL_MODELVIEW);
+
+	glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
+	glEnable(GL_COLOR_MATERIAL);
+
+	glEnable(GL_DEPTH_TEST);
+	glDepthMask(GL_TRUE);
+	glEnable(GL_CULL_FACE);
+	glCullFace(GL_BACK);
+
+	glEnable(GL_POLYGON_SMOOTH);
+
+	glEnable(GL_LIGHTING);
+	glEnable(GL_LIGHT0);
+	glLightfv(GL_LIGHT0, GL_AMBIENT, (float []) { 0.1f, 0.1f, 0.1f, 1.0f } );
+	glLightfv(GL_LIGHT0, GL_DIFFUSE, (float []) { 0.1f, 0.1f, 0.1f, 1.0f } );
+
+	glLightfv(GL_LIGHT0, GL_POSITION, (float []) { 2.0f, 4.0f, -2.0f } );
+
+	unsigned int tick = SDL_GetTicks();
+
+	while ( running ) {
+		while ( SDL_PollEvent(& event) ) {
+			if ( event.type == SDL_QUIT )
+				running = false;
+			else if ( event.type == SDL_KEYDOWN ) {
+				if ( event.key.keysym.sym == SDLK_ESCAPE )
+					running = false;
+			} else if ( event.type == SDL_MOUSEBUTTONDOWN ) {
+				mousedown = true;
+			} else if ( event.type == SDL_MOUSEBUTTONUP ) {
+				mousedown = false;
+			} else if ( event.type == SDL_MOUSEMOTION ) {
+				if ( mousedown )
+					rotation += event.motion.xrel;
+			}
+		}
+
+		glClear(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT);
+		glLoadIdentity();
+
+		glTranslatef(0.0f, 0.0f, -4.0f);
+		glRotatef(15.0f, 1.0f, 0.0f, 0.0f);
+		glRotatef(rotation, 0.0f, 1.0f, 0.0f);
+
+		robot(time * freq);
+
+		SDL_GL_SwapBuffers();
+
+		time = ((float) SDL_GetTicks() - (float) tick) / 1000.0f;
+	}
+
+	SDL_Quit();
+
+	return 0;
+}