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/*
* $Id: Screen3D.d,v 1.3 2004/01/01 11:26:43 kenta Exp $
*
* Copyright 2003 Kenta Cho. All rights reserved.
*/
module abagames.util.sdl.Screen3D;
private:
import std.string;
private import std.conv;
import SDL;
import opengl;
import abagames.util.Logger;
import abagames.util.sdl.Screen;
import abagames.util.sdl.SDLInitFailedException;
/**
* SDL screen handler(3D, OpenGL).
*/
public class Screen3D: Screen {
public:
static float brightness = 1;
static int width = 640;
static int height = 480;
static bool lowres = false;
static bool windowMode = true;
static float nearPlane = 0.1;
static float farPlane = 1000;
private:
static Uint32 videoFlags;
protected abstract void init();
protected abstract void close();
public override void initSDL() {
if (lowres) {
width /= 2;
height /= 2;
}
// Initialize SDL.
if (SDL_Init(SDL_INIT_VIDEO) < 0) {
throw new SDLInitFailedException(
"Unable to initialize SDL: " ~ to!string(SDL_GetError()));
}
// Create an OpenGL screen.
if (windowMode) {
videoFlags = SDL_OPENGL | SDL_RESIZABLE;
} else {
videoFlags = SDL_OPENGL | SDL_FULLSCREEN;
}
if (SDL_SetVideoMode(width, height, 0, videoFlags) == null) {
throw new SDLInitFailedException
("Unable to create SDL screen: " ~ to!string(SDL_GetError()));
}
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
resized(width, height);
SDL_ShowCursor(SDL_DISABLE);
init();
}
// Reset viewport when the screen is resized.
private void screenResized() {
if (SDL_SetVideoMode(width, height, 0, videoFlags) == null) {
throw new Exception
("Unable to resize SDL screen: " ~ to!string(SDL_GetError()));
}
glViewport(0, 0, width, height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
//gluPerspective(45.0f, (GLfloat)width/(GLfloat)height, nearPlane, farPlane);
glFrustum(-nearPlane,
nearPlane,
-nearPlane * cast(GLfloat)height / cast(GLfloat)width,
nearPlane * cast(GLfloat)height / cast(GLfloat)width,
0.1f, farPlane);
glMatrixMode(GL_MODELVIEW);
}
public void resized(int width, int height) {
this.width = width; this.height = height;
screenResized();
}
public override void closeSDL() {
close();
SDL_ShowCursor(SDL_ENABLE);
}
public override void flip() {
handleError();
SDL_GL_SwapBuffers();
}
public override void clear() {
glClear(GL_COLOR_BUFFER_BIT);
}
public void handleError() {
GLenum error = glGetError();
if (error == GL_NO_ERROR) return;
closeSDL();
throw new Exception("OpenGL error");
}
protected void setCaption(string name) {
SDL_WM_SetCaption(std.string.toStringz(name), null);
}
public static void setColor(float r, float g, float b, float a) {
glColor4f(r * brightness, g * brightness, b * brightness, a);
}
}
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