C++ (Cpp) Vector2d::getX Examples

Example #1

File: gfx_opengl_shaders.cpp Project: ZydrateJunkie/grim_mouse

void ShaderRenderer::screenPosToDirection(const Common::Point screen, float &pitch, float &heading) {
  double x, y, z;

  x = screen.x;
  y = kOriginalHeight - screen.y;
  z = 0.9f;

  const Math::Vector2d tl = _viewport.getTopLeft();
  x = 2 * double(x - tl.getX()) / _viewport.getWidth() - 1.0f;
  y = 2 * double(y - tl.getY()) / _viewport.getHeight() - 1.0f;
  z = 2 * z - 1.0f;

  // Screen coords to 3D coords
  Math::Vector4d point = Math::Vector4d(x, y, z, 1.0f);
  point = _mvpMatrix * point;

  // 3D coords to polar coords
  Math::Vector3d v = Math::Vector3d(point.x(), point.y(), point.z());
  v.normalize();

  Math::Vector2d horizontalProjection = Math::Vector2d(v.x(), v.z());
  horizontalProjection.normalize();

  pitch = 90 - Math::Angle::arcCosine(v.y()).getDegrees();
  heading = Math::Angle::arcCosine(horizontalProjection.getY()).getDegrees();

  if (horizontalProjection.getX() > 0.0)
    heading = 360 - heading;
}

Example #2

File: gfx.cpp Project: Nitrus/residualvm

void BaseRenderer::screenPosToDirection(const Common::Point screen, float &pitch, float &heading) {
	// Screen coords to 3D coords
	Math::Vector3d obj;
	Math::gluMathUnProject(Math::Vector3d(screen.x, _system->getHeight() - screen.y, 0.9f), _mvpMatrix, frameViewport(), obj);

	// 3D coords to polar coords
	obj.normalize();

	Math::Vector2d horizontalProjection = Math::Vector2d(obj.x(), obj.z());
	horizontalProjection.normalize();

	pitch = 90 - Math::Angle::arcCosine(obj.y()).getDegrees();
	heading = Math::Angle::arcCosine(horizontalProjection.getY()).getDegrees();

	if (horizontalProjection.getX() > 0.0)
		heading = 360 - heading;
}

Example #3

File: gfx_tinygl.cpp Project: eriktorbjorn/residualvm

void TinyGLRenderer::screenPosToDirection(const Common::Point screen, float &pitch, float &heading) {
	// Screen coords to 3D coords
	Math::Vector3d obj;
	Math::gluMathUnProject<float, int>(Math::Vector3d(screen.x, kOriginalHeight - screen.y, 0.9),
		_cubeModelViewMatrix, _cubeProjectionMatrix, _cubeViewport, obj);

	// 3D coords to polar coords
	obj.normalize();

	Math::Vector2d horizontalProjection = Math::Vector2d(obj.x(), obj.z());
	horizontalProjection.normalize();

	pitch = 90 - Math::Angle::arcCosine(obj.y()).getDegrees();
	heading = Math::Angle::arcCosine(horizontalProjection.getY()).getDegrees();

	if (horizontalProjection.getX() > 0.0)
		heading = 360 - heading;
}

Example #4

File: gfx.cpp Project: YakBizzarro/residual

void Renderer::screenPosToDirection(const Common::Point screen, float &pitch, float &heading) {
	double x, y, z;

	// Screen coords to 3D coords
	gluUnProject(screen.x, kOriginalHeight - screen.y, 0.9, _cubeModelViewMatrix, _cubeProjectionMatrix, (GLint *)_cubeViewport, &x, &y, &z);

	// 3D coords to polar coords
	Math::Vector3d v = Math::Vector3d(x, y, z);
	v.normalize();

	Math::Vector2d horizontalProjection = Math::Vector2d(v.x(), v.z());
	horizontalProjection.normalize();

	pitch = 90 - Math::Angle::arcCosine(v.y()).getDegrees();
	heading = Math::Angle::arcCosine(horizontalProjection.getY()).getDegrees();

	if (horizontalProjection.getX() > 0.0)
		heading = 360 - heading;
}

Example #5

File: surfacesdl-graphics.cpp Project: LasDesu/residualvm

void SurfaceSdlGraphicsManager::drawTexture(const Graphics::Texture &tex, const Math::Vector2d &topLeft, const Math::Vector2d &bottomRight, bool flip) {
#ifndef USE_OPENGL_SHADERS
	// Save current state
	glPushAttrib(GL_TRANSFORM_BIT | GL_ENABLE_BIT | GL_DEPTH_BUFFER_BIT | GL_SCISSOR_BIT);

	// prepare view
	glMatrixMode(GL_PROJECTION);
	glPushMatrix();
	glLoadIdentity();
	glOrtho(0, 1.0, 1.0, 0, 0, 1);

	glMatrixMode(GL_MODELVIEW);
	glPushMatrix();
	glLoadIdentity();

	glMatrixMode(GL_TEXTURE);
	glPushMatrix();
	glLoadIdentity();

	glDisable(GL_LIGHTING);
	glEnable(GL_TEXTURE_2D);
	glDisable(GL_DEPTH_TEST);
	glDisable(GL_ALPHA_TEST);
	glDepthMask(GL_FALSE);

	float texcropX = tex.getWidth() / float(tex.getTexWidth());
	float texcropY = tex.getHeight() / float(tex.getTexHeight());
	float texTop    = flip ? 0.0 : texcropY;
	float texBottom = flip ? texcropY : 0.0;

	float offsetX = topLeft.getX();
	float offsetY = topLeft.getY();
	float sizeX   = fabsf(topLeft.getX() - bottomRight.getX());
	float sizeY   = fabsf(topLeft.getY() - bottomRight.getY());

	glColor4f(1.0, 1.0, 1.0, 1.0);

	glBindTexture(GL_TEXTURE_2D, tex.getTextureName());
	glBegin(GL_QUADS);
	glTexCoord2f(0, texTop);
	glVertex2f(offsetX, offsetY);
	glTexCoord2f(texcropX, texTop);
	glVertex2f(offsetX + sizeX, offsetY);
	glTexCoord2f(texcropX, texBottom);
	glVertex2f(offsetX + sizeX, offsetY + sizeY);
	glTexCoord2f(0.0, texBottom);
	glVertex2f(offsetX, offsetY + sizeY);
	glEnd();

	// Restore previous state
	glMatrixMode(GL_PROJECTION);
	glPopMatrix();

	glMatrixMode(GL_MODELVIEW);
	glPopMatrix();

	glMatrixMode(GL_TEXTURE);
	glPopMatrix();

	glPopAttrib();
#else
	glBindTexture(GL_TEXTURE_2D, tex.getTextureName());

	_boxShader->use();
	float texcropX = tex.getWidth() / float(tex.getTexWidth());
	float texcropY = tex.getHeight() / float(tex.getTexHeight());
	_boxShader->setUniform("texcrop", Math::Vector2d(texcropX, texcropY));
	_boxShader->setUniform("flipY", flip);

	_boxShader->setUniform("offsetXY", topLeft);
	_boxShader->setUniform("sizeWH", Math::Vector2d(fabsf(topLeft.getX() - bottomRight.getX()), fabsf(topLeft.getY() - bottomRight.getY())));

	glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
	glBindTexture(GL_TEXTURE_2D, 0);
#endif
}