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OpenGL ES를 사용하여 iPhone 게임을 개발 중입니다. 나는 터치과 같은 코드를 사용하여 좌표를 사용하여 플레이어를 이동하려면 다음어떻게하면 2-D OpenGL ES 좌표로 창 좌표를 변환합니까?
- (void) render:(float)delta
{
if(initialized==0) {
[self initOpenGL];
}
static const GLfloat squareVertices[] = {
-0.5f, -0.33f,
0.5f, -0.33f,
-0.5f, 0.33f,
0.5f, 0.33f,
};
static const GLubyte squareColors[] = {
255, 255, 0, 255,
0, 255, 255, 255,
0, 0, 0, 0,
255, 0, 255, 255,
};
float transY = delta;
// This application only creates a single context which is already set current at this point.
// This call is redundant, but needed if dealing with multiple contexts.
[EAGLContext setCurrentContext:context];
// This application only creates a single default framebuffer which is already bound at this point.
// This call is redundant, but needed if dealing with multiple framebuffers.
//glBindFramebuffer(GL_FRAMEBUFFER, defaultFramebuffer);
glViewport(0, 0, backingWidth, backingHeight);
glClearColor(0.5f, 0.5f, 0.5f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
// Use shader program
//glUseProgram(program);
// Update uniform value
//glUniform1f(uniforms[UNIFORM_TRANSLATE], (GLfloat)transY);
//transY += 0.075f;
glVertexPointer(2, GL_FLOAT, 0, squareVertices);
glEnableClientState(GL_VERTEX_ARRAY);
glColorPointer(4, GL_UNSIGNED_BYTE, 0, squareColors);
glTranslatef(0.0f, (GLfloat)(sinf(transY)/2.0f), 0.0f);
//transY += 0.0001f;
glEnableClientState(GL_COLOR_ARRAY);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_COLOR_ARRAY);
// Update attribute values
// Validate program before drawing. This is a good check, but only really necessary in a debug build.
// DEBUG macro must be defined in your debug configurations if that's not already the case.
// Draw
// This application only creates a single color renderbuffer which is already bound at this point.
// This call is redundant, but needed if dealing with multiple renderbuffers.
// glBindRenderbuffer(GL_RENDERBUFFER, renderBuffer);
glBindRenderbufferOES(GL_RENDERBUFFER_OES,renderBuffer);
[context presentRenderbuffer:GL_RENDERBUFFER_OES];
}
나는 창을 사용하여 객체를 변환 할 수 없습니다 :
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
CGPoint point=[[touches anyObject]locationInView:self.view];
[eaglView render:point.x];
}// end
는 다음 코드를 사용하여 내 OpenGL을 ES보기 내에서 렌더링 좌표를 정규화 된 장치 좌표로 변환해야합니다. OpenGL ES 모델을 번역 할 때 사용할 수있는 좌표로 윈도우 좌표를 변환하는 방법은 무엇입니까?