//--------------------------------------------------------------------------------------------------
/// Set up camera/viewport and render
//--------------------------------------------------------------------------------------------------
void OverlayNavigationCube::render(OpenGLContext* oglContext, const Vec2i& position, const Vec2ui& size, bool software, const Mat4d& viewMatrix)
{
if (size.x() <= 0 || size.y() <= 0)
{
return;
}
if (m_axis.isNull())
{
createAxisGeometry(software);
}
if (m_cubeGeos.size() == 0)
{
createCubeGeos();
// Create the shader for the cube geometry
ShaderProgramGenerator gen("CubeGeoShader", ShaderSourceProvider::instance());
gen.configureStandardHeadlightColor();
m_cubeGeoShader = gen.generate();
m_cubeGeoShader->linkProgram(oglContext);
}
// Position the camera far enough away to make the axis and the text fit within the viewport
Mat4d axisMatrix = viewMatrix;
axisMatrix.setTranslation(Vec3d(0, 0, -2.0));
// Setup camera
Camera cam;
cam.setProjectionAsPerspective(40.0, 0.05, 100.0);
cam.setViewMatrix(axisMatrix);
cam.setViewport(position.x(), position.y(), size.x(), size.y());
// Setup viewport
cam.viewport()->applyOpenGL(oglContext, Viewport::CLEAR_DEPTH);
cam.applyOpenGL();
// Do the actual rendering
// -----------------------------------------------
MatrixState matrixState(cam);
if (software)
{
renderAxisImmediateMode(oglContext, matrixState);
}
else
{
renderAxis(oglContext, matrixState);
}
renderCubeGeos(oglContext, software, matrixState);
renderAxisLabels(oglContext, software, matrixState);
}
bool GeometryUtils::project(const Mat4d& projectionMultViewMatrix, const Vec2i& viewportPosition, const Vec2ui& viewportSize, const Vec3d& point, Vec3d* out)
{
CVF_ASSERT(out);
Vec4d v = projectionMultViewMatrix * Vec4d(point, 1.0);
if (v.w() == 0.0f)
{
return false;
}
v.x() /= v.w();
v.y() /= v.w();
v.z() /= v.w();
// map to range 0-1
out->x() = v.x()*0.5 + 0.5;
out->y() = v.y()*0.5 + 0.5;
out->z() = v.z()*0.5 + 0.5;
// map to viewport
out->x() = out->x() * viewportSize.x() + viewportPosition.x();
out->y() = out->y() * viewportSize.y() + viewportPosition.y();
return true;
}
//--------------------------------------------------------------------------------------------------
/// Set up camera/viewport and render
//--------------------------------------------------------------------------------------------------
void OverlayColorLegend::render(OpenGLContext* oglContext, const Vec2ui& position, const Vec2ui& size, bool software)
{
if (size.x() <= 0 || size.y() <= 0)
{
return;
}
Camera camera;
camera.setViewport(position.x(), position.y(), size.x(), size.y());
camera.setProjectionAsPixelExact2D();
camera.setViewMatrix(Mat4d::IDENTITY);
camera.applyOpenGL();
camera.viewport()->applyOpenGL(oglContext, Viewport::CLEAR_DEPTH);
// Get layout information
// Todo: Cache this between renderings. Update only when needed.
OverlayColorLegendLayoutInfo layout(position, size);
layoutInfo(&layout);
// Set up text drawer
TextDrawer textDrawer(m_font.p());
setupTextDrawer(&textDrawer, &layout);
// Do the actual rendering
if (software)
{
renderLegendImmediateMode(oglContext, &layout);
textDrawer.renderSoftware(oglContext, camera);
}
else
{
const MatrixState matrixState(camera);
renderLegend(oglContext, &layout, matrixState);
textDrawer.render(oglContext, camera);
}
CVF_CHECK_OGL(oglContext);
}
//--------------------------------------------------------------------------------------------------
/// Set the size of the text box to fit the current text.
///
/// The method will also add a bit of space for the border or background if enabled.
//--------------------------------------------------------------------------------------------------
void OverlayTextBox::setSizeToFitText()
{
cvf::Vec2ui textSize = m_font->textExtent(m_text);
// Add the size of an 'A' as the margin, same as used in the Text Drawer
ref<Glyph> glyph = m_font->getGlyph(L'A');
Vec2ui size = Vec2ui(textSize.x() + glyph->width(), textSize.y() + glyph->height());
if (m_drawBorder)
{
size.x() += 4;
size.y() += 4;
}
setPixelSize(size);
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
bool OverlayScalarMapperLegend::pick(int oglXCoord, int oglYCoord, const Vec2i& position, const Vec2ui& size)
{
Recti oglRect(position, size.x(), size.y());
OverlayColorLegendLayoutInfo layoutInViewPortCoords(oglRect.min(), Vec2ui(oglRect.width(), oglRect.height()));
layoutInfo(&layoutInViewPortCoords);
Vec2i legendBarOrigin = oglRect.min();
legendBarOrigin.x() += static_cast<uint>(layoutInViewPortCoords.legendRect.min().x());
legendBarOrigin.y() += static_cast<uint>(layoutInViewPortCoords.legendRect.min().y());
Recti legendBarRect = Recti(legendBarOrigin, static_cast<uint>(layoutInViewPortCoords.legendRect.width()), static_cast<uint>(layoutInViewPortCoords.legendRect.height()));
if ((oglXCoord > legendBarRect.min().x()) && (oglXCoord < legendBarRect.max().x()) &&
(oglYCoord > legendBarRect.min().y()) && (oglYCoord < legendBarRect.max().y()))
{
return true;
}
return false;
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void Rendering::calculateOverlayItemLayout(OverlayItemRectMap* itemRectMap, OverlayItem::LayoutCorner corner, OverlayItem::LayoutDirection direction)
{
const int border = 3;
const Vec2i vpSize = Vec2i(static_cast<int>(m_camera->viewport()->width()), static_cast<int>(m_camera->viewport()->height()));
const Vec2i vpPos = Vec2i(m_camera->viewport()->x(), m_camera->viewport()->y());
Vec2i cursor(0,0);
switch (corner)
{
case OverlayItem::TOP_LEFT: cursor.set(border, vpSize.y() - border); break;
case OverlayItem::TOP_RIGHT: cursor.set(vpSize.x() - border, vpSize.y() - border); break;
case OverlayItem::BOTTOM_LEFT: cursor.set(border, border); break;
case OverlayItem::BOTTOM_RIGHT: cursor.set(vpSize.x() - border, border); break;
default: cursor.set(border,border);
}
cursor += vpPos;
// Adjust based on other already placed items
OverlayItemRectMap::iterator it;
for (it = itemRectMap->begin(); it != itemRectMap->end(); ++it)
{
Recti rect = it->second;
if (rect.contains(cursor) && (direction == OverlayItem::VERTICAL))
{
if (corner == OverlayItem::BOTTOM_LEFT || corner == OverlayItem::BOTTOM_RIGHT)
{
cursor.y() += rect.height() + border;
}
else
{
cursor.y() -= rect.height() + border;
}
}
}
size_t numOverlayItems = m_overlayItems.size();
size_t i;
for (i = 0; i < numOverlayItems; i++)
{
OverlayItemLayout item = m_overlayItems.at(i);
if ((item.corner == corner) && (item.direction == direction))
{
CVF_ASSERT(item.overlayItem.notNull());
// Find this position and size
Vec2i position = cursor;
Vec2ui size = item.overlayItem->sizeHint();
if ((corner == OverlayItem::TOP_RIGHT) || (corner == OverlayItem::BOTTOM_RIGHT))
{
position.x() -= size.x();
}
if ((corner == OverlayItem::TOP_LEFT) || (corner == OverlayItem::TOP_RIGHT))
{
position.y() -= size.y();
}
// Store the position in the map
Recti rect(position.x(), position.y(), static_cast<int>(size.x()), static_cast<int>(size.y()));
(*itemRectMap)[item.overlayItem.p()] = rect;
// Find next position, moving the cursor
if (direction == OverlayItem::HORIZONTAL)
{
if ((corner == OverlayItem::TOP_LEFT) || (corner == OverlayItem::BOTTOM_LEFT))
{
cursor.x() += (size.x() + border);
}
else
{
cursor.x() -= (size.x() + border);
}
}
else if (direction == OverlayItem::VERTICAL)
{
if ((corner == OverlayItem::BOTTOM_LEFT) || (corner == OverlayItem::BOTTOM_RIGHT))
{
cursor.y() += (size.y() + border);
}
else
{
cursor.y() -= (size.y() + border);
}
}
else
{
CVF_FAIL_MSG("Unhandled OverlayItem::LayoutDirection");
}
}
}
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void OverlayImage::render(OpenGLContext* oglContext, const Vec2i& position, const Vec2ui& size, bool software)
{
CVF_CALLSITE_OPENGL(oglContext);
Camera projCam;
projCam.setViewport(position.x(), position.y(), size.x(), size.y());
projCam.setProjectionAsPixelExact2D();
projCam.setViewMatrix(Mat4d::IDENTITY);
// Turn off depth test
RenderStateDepth depth(false, RenderStateDepth::LESS, false);
depth.applyOpenGL(oglContext);
float vertexArray[12];
float textureCoords[] = {0.0f, 0.0f,
1.0f, 0.0f,
1.0f, 1.0f,
0.0f, 1.0f};
projCam.viewport()->applyOpenGL(oglContext, Viewport::DO_NOT_CLEAR);
if (software)
{
// Create a POW2 texture for software rendering if needed
if (m_image.notNull() && m_pow2Image.isNull() && (!Math::isPow2(m_image->width()) || !Math::isPow2(m_image->height())))
{
m_pow2Image = new TextureImage;
m_pow2Image->allocate(Math::roundUpPow2(m_image->width()), Math::roundUpPow2(m_image->height()));
m_pow2Image->fill(Color4ub(Color3::BLACK));
for (uint y = 0; y < m_image->height(); ++y)
{
for (uint x = 0; x < m_image->width(); ++x)
{
m_pow2Image->setPixel(x, y, m_image->pixel(x, y));
}
}
}
if (ShaderProgram::supportedOpenGL(oglContext))
{
ShaderProgram::useNoProgram(oglContext);
}
#ifndef CVF_OPENGL_ES
RenderStateMaterial_FF mat;
mat.enableColorMaterial(true);
mat.applyOpenGL(oglContext);
RenderStateLighting_FF light(false);
light.applyOpenGL(oglContext);
if (m_textureBindings.isNull())
{
// Use fixed function texture setup
ref<Texture2D_FF> texture = new Texture2D_FF(m_pow2Image.notNull() ? m_pow2Image.p() : m_image.p());
texture->setWrapMode(Texture2D_FF::CLAMP);
texture->setMinFilter(Texture2D_FF::NEAREST);
texture->setMagFilter(Texture2D_FF::NEAREST);
texture->setupTexture(oglContext);
texture->setupTextureParams(oglContext);
ref<RenderStateTextureMapping_FF> textureMapping = new RenderStateTextureMapping_FF(texture.p());
textureMapping->setTextureFunction(m_blendMode == TEXTURE_ALPHA ? RenderStateTextureMapping_FF::MODULATE : RenderStateTextureMapping_FF::DECAL);
m_textureBindings = textureMapping;
}
#endif
// Adjust texture coordinates
if (m_pow2Image.notNull())
{
float xMax = static_cast<float>(m_image->width())/static_cast<float>(m_pow2Image->width());
float yMax = static_cast<float>(m_image->height())/static_cast<float>(m_pow2Image->height());
textureCoords[2] = xMax;
textureCoords[4] = xMax;
textureCoords[5] = yMax;
textureCoords[7] = yMax;
}
projCam.applyOpenGL();
}
else
{
glBindBuffer(GL_ARRAY_BUFFER, 0);
glEnableVertexAttribArray(ShaderProgram::VERTEX);
glEnableVertexAttribArray(ShaderProgram::TEX_COORD_2F_0);
glVertexAttribPointer(ShaderProgram::VERTEX, 3, GL_FLOAT, GL_FALSE, 0, vertexArray);
glVertexAttribPointer(ShaderProgram::TEX_COORD_2F_0, 2, GL_FLOAT, GL_FALSE, 0, textureCoords);
if (m_shaderProgram.isNull())
{
ShaderProgramGenerator gen("OverlayImage_Shader", ShaderSourceProvider::instance());
gen.addVertexCode(ShaderSourceRepository::vs_MinimalTexture);
if (m_blendMode == GLOBAL_ALPHA)
{
gen.addFragmentCode(ShaderSourceRepository::src_TextureGlobalAlpha);
}
else
{
gen.addFragmentCode(ShaderSourceRepository::src_Texture);
}
gen.addFragmentCode(ShaderSourceRepository::fs_Unlit);
m_shaderProgram = gen.generate();
m_shaderProgram->linkProgram(oglContext);
}
if (m_shaderProgram->useProgram(oglContext))
{
MatrixState projMatrixState(projCam);
m_shaderProgram->clearUniformApplyTracking();
m_shaderProgram->applyFixedUniforms(oglContext, projMatrixState);
}
if (m_texture->textureOglId() == 0)
{
m_texture->setupTexture(oglContext);
}
if (m_textureBindings.isNull())
{
cvf::RenderStateTextureBindings* textureBindings = new cvf::RenderStateTextureBindings;
textureBindings->addBinding(m_texture.p(), m_sampler.p(), "u_texture2D");
m_textureBindings = textureBindings;
}
}
float offset = 0.0f;
Vec3f min(offset, offset, 0.0f);
Vec3f max(static_cast<float>(size.x()) + offset, static_cast<float>(size.y()) + offset, 0.0f);
// Setup the vertex array
float* v1 = &vertexArray[0];
float* v2 = &vertexArray[3];
float* v3 = &vertexArray[6];
float* v4 = &vertexArray[9];
v1[0] = min.x(); v1[1] = min.y(); v1[2] = 0.0f;
v2[0] = max.x(); v2[1] = min.y(); v2[2] = 0.0f;
v3[0] = max.x(); v3[1] = max.y(); v3[2] = 0.0f;
v4[0] = min.x(); v4[1] = max.y(); v4[2] = 0.0f;
if (m_blendMode != NO_BLENDING)
{
RenderStateBlending blend;
blend.configureTransparencyBlending();
blend.applyOpenGL(oglContext);
}
m_textureBindings->applyOpenGL(oglContext);
if (software)
{
#ifndef CVF_OPENGL_ES
glColor4f(1.0f, 1.0f, 1.0f, m_blendMode == GLOBAL_ALPHA ? m_alpha : 1.0f);
glBegin(GL_TRIANGLE_FAN);
glTexCoord2f(textureCoords[0], textureCoords[1]);
glVertex3fv(v1);
glTexCoord2f(textureCoords[2], textureCoords[3]);
glVertex3fv(v2);
glTexCoord2f(textureCoords[4], textureCoords[5]);
glVertex3fv(v3);
glTexCoord2f(textureCoords[6], textureCoords[7]);
glVertex3fv(v4);
glEnd();
#endif
}
else
{
if (m_blendMode == GLOBAL_ALPHA)
{
UniformFloat alphaUniform("u_alpha", m_alpha);
m_shaderProgram->applyUniform(oglContext, alphaUniform);
}
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
}
if (m_blendMode != NO_BLENDING)
{
RenderStateBlending blend;
blend.applyOpenGL(oglContext);
}
RenderStateDepth resetDepth;
resetDepth.applyOpenGL(oglContext);
if (software)
{
#ifndef CVF_OPENGL_ES
RenderStateTextureMapping_FF resetTextureMapping;
resetTextureMapping.applyOpenGL(oglContext);
#endif
}
if (!software)
{
glDisableVertexAttribArray(ShaderProgram::VERTEX);
glDisableVertexAttribArray(ShaderProgram::TEX_COORD_2F_0);
}
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void OverlayItems::addOverlayItemsVariousTypes()
{
// Setup the overlay items
{
ref<OverlayAxisCross> overlay = new OverlayAxisCross(m_camera.p(), new FixedAtlasFont(FixedAtlasFont::STANDARD));
overlay->setLayout(OverlayItem::VERTICAL, OverlayItem::BOTTOM_LEFT);
m_renderSequence->firstRendering()->addOverlayItem(overlay.p());
}
// Image overlay - Global Alpha
{
ref<TextureImage> img = cvfu::ImageJpeg::loadImage(m_testDataDir + "CeetronLogoDiffuse.jpg");
ref<OverlayImage> overlay = new OverlayImage(img.p());
overlay->setGlobalAlpha(0.7f);
overlay->setBlending(cvf::OverlayImage::GLOBAL_ALPHA);
overlay->setLayout(OverlayItem::VERTICAL, OverlayItem::BOTTOM_RIGHT);
m_renderSequence->firstRendering()->addOverlayItem(overlay.p());
}
// Image overlay - Opaque small
{
ref<TextureImage> img = cvfu::ImageJpeg::loadImage(m_testDataDir + "CeetronLogoDiffuse.jpg");
ref<OverlayImage> overlay = new OverlayImage(img.p());
overlay->setPixelSize(cvf::Vec2ui(img->width()/2, img->height()/2));
overlay->setLayout(OverlayItem::VERTICAL, OverlayItem::BOTTOM_RIGHT);
m_renderSequence->firstRendering()->addOverlayItem(overlay.p());
}
// Image overlay - Texture Alpha
{
ref<TextureImage> img = cvfu::ImageJpeg::loadImage(m_testDataDir + "CeetronLogoDiffuse.jpg");
// Create alpha values, as we cannot ready any format with alpha...
for (cvf::uint y = 0; y < img->height(); ++y)
{
for (cvf::uint x = 0; x < img->width(); ++x)
{
cvf::Color4ub pixel = img->pixel(x, y);
if (pixel.r() >= 245 && pixel.g() >= 245 && pixel.b() >= 245)
{
pixel.a() = 0;
img->setPixel(x, y, pixel);
}
}
}
ref<OverlayImage> overlay = new OverlayImage(img.p());
overlay->setBlending(cvf::OverlayImage::TEXTURE_ALPHA);
overlay->setLayout(OverlayItem::VERTICAL, OverlayItem::BOTTOM_RIGHT);
m_renderSequence->firstRendering()->addOverlayItem(overlay.p());
}
ref<OverlayTextBox> tb1 = new OverlayTextBox(new FixedAtlasFont(FixedAtlasFont::STANDARD));
tb1->setText("This is the first text box");
tb1->setTextColor(Color3f(Color3::WHITE));
tb1->setLayout(OverlayItem::VERTICAL, OverlayItem::BOTTOM_RIGHT);
m_renderSequence->firstRendering()->addOverlayItem(tb1.p());
ref<OverlayTextBox> tb2 = new OverlayTextBox(new FixedAtlasFont(FixedAtlasFont::LARGE));
tb2->setText("This is LARGE text");
tb2->setDrawBackground(true);
tb2->setDrawBorder(true);
tb2->setLayout(OverlayItem::VERTICAL, OverlayItem::BOTTOM_RIGHT);
m_renderSequence->firstRendering()->addOverlayItem(tb2.p());
ref<Font> font = new FixedAtlasFont(FixedAtlasFont::LARGE);
ref<Font> fontStd = new FixedAtlasFont(FixedAtlasFont::STANDARD);
{
ref<OverlayTextBox> tb2 = new OverlayTextBox(font.p());
String text = "Lower Die";
tb2->setText(text);
tb2->setSizeToFitText();
tb2->setLayout(OverlayItem::VERTICAL, OverlayItem::BOTTOM_RIGHT);
m_renderSequence->firstRendering()->addOverlayItem(tb2.p());
}
{
ref<OverlayTextBox> tb2 = new OverlayTextBox(font.p());
String text = "Billet";
tb2->setText(text);
tb2->setSizeToFitText();
tb2->setLayout(OverlayItem::VERTICAL, OverlayItem::BOTTOM_RIGHT);
m_renderSequence->firstRendering()->addOverlayItem(tb2.p());
}
{
ref<OverlayTextBox> tb2 = new OverlayTextBox(font.p());
String text = "Upper Die - hard coded";
Vec2ui size = font->textExtent(text);
size.x() += 10; size.y() += 10;
tb2->setText(text);
tb2->setPixelSize(size);
tb2->setLayout(OverlayItem::VERTICAL, OverlayItem::BOTTOM_RIGHT);
m_renderSequence->firstRendering()->addOverlayItem(tb2.p());
}
{
ref<OverlayTextBox> tb2 = new OverlayTextBox(font.p());
String text = "Example View Title here";
tb2->setText(text);
tb2->setTextColor(Color3f(0,0,0));
tb2->setDrawBorder(false);
tb2->setDrawBackground(false);
tb2->setSizeToFitText();
tb2->setLayout(OverlayItem::VERTICAL, OverlayItem::TOP_LEFT);
m_renderSequence->firstRendering()->addOverlayItem(tb2.p());
}
{
ref<OverlayTextBox> tb2 = new OverlayTextBox(fontStd.p());
String text = "An example view description here";
tb2->setText(text);
tb2->setDrawBorder(false);
tb2->setSizeToFitText();
tb2->setDrawBackground(false);
tb2->setLayout(OverlayItem::VERTICAL, OverlayItem::TOP_LEFT);
m_renderSequence->firstRendering()->addOverlayItem(tb2.p());
}
{
ref<OverlayTextBox> tb2 = new OverlayTextBox(font.p());
String text = "Only background";
tb2->setText(text);
tb2->setDrawBorder(false);
tb2->setSizeToFitText();
tb2->setBackgroundColor(Color3::CRIMSON);
tb2->setLayout(OverlayItem::VERTICAL, OverlayItem::TOP_LEFT);
m_renderSequence->firstRendering()->addOverlayItem(tb2.p());
}
{
ref<OverlayTextBox> tb2 = new OverlayTextBox(font.p());
String text = "Only border";
tb2->setText(text);
tb2->setDrawBackground(false);
tb2->setSizeToFitText();
tb2->setBorderColor(Color3::GOLD);
tb2->setLayout(OverlayItem::VERTICAL, OverlayItem::TOP_LEFT);
m_renderSequence->firstRendering()->addOverlayItem(tb2.p());
}
{
ref<OverlayTextBox> tb2 = new OverlayTextBox(font.p());
String text = "Multi line overlay text\nLarge font";
tb2->setText(text);
tb2->setSizeToFitText();
tb2->setLayout(OverlayItem::VERTICAL, OverlayItem::TOP_RIGHT);
m_renderSequence->firstRendering()->addOverlayItem(tb2.p());
}
{
ref<OverlayTextBox> tb2 = new OverlayTextBox(fontStd.p());
String text = "Multi line overlay text\nStandard font\nHard coded size";
Vec2ui size = fontStd->textExtent(text);
size.x() += 10; size.y() += 50;
tb2->setPixelSize(size);
tb2->setText(text);
tb2->setLayout(OverlayItem::VERTICAL, OverlayItem::TOP_RIGHT);
m_renderSequence->firstRendering()->addOverlayItem(tb2.p());
}
{
ref<OverlayTextBox> tb2 = new OverlayTextBox(fontStd.p());
String text = "Single line size to fit with border text GujYg";
tb2->setText(text);
tb2->setSizeToFitText();
tb2->setLayout(OverlayItem::VERTICAL, OverlayItem::TOP_RIGHT);
m_renderSequence->firstRendering()->addOverlayItem(tb2.p());
}
{
ref<OverlayTextBox> tb2 = new OverlayTextBox(fontStd.p());
String text = "Single line size to fit no border text GujYg";
tb2->setDrawBorder(false);
tb2->setText(text);
tb2->setSizeToFitText();
tb2->setLayout(OverlayItem::VERTICAL, OverlayItem::TOP_RIGHT);
m_renderSequence->firstRendering()->addOverlayItem(tb2.p());
}
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void OverlayTextBox::renderBackgroundAndBorder(OpenGLContext* oglContext, const Vec2ui& position, const Vec2ui& size, bool software)
{
CVF_CALLSITE_OPENGL(oglContext);
// Prepare 2D pixel exact projection to draw texts
Camera projCam;
projCam.setViewport(position.x(), position.y(), size.x(), size.y());
projCam.setProjectionAsPixelExact2D();
projCam.setViewMatrix(Mat4d::IDENTITY);
// Turn off depth test
RenderStateDepth depth(false, RenderStateDepth::LESS, false);
depth.applyOpenGL(oglContext);
ref<ShaderProgram> backgroundShader;
float vertexArray[12];
projCam.viewport()->applyOpenGL(oglContext, Viewport::DO_NOT_CLEAR);
if (software)
{
if (ShaderProgram::supportedOpenGL(oglContext))
{
ShaderProgram::useNoProgram(oglContext);
}
#ifndef CVF_OPENGL_ES
RenderStateMaterial_FF mat;
mat.enableColorMaterial(true);
mat.applyOpenGL(oglContext);
RenderStateLighting_FF light(false);
light.applyOpenGL(oglContext);
#endif
projCam.applyOpenGL();
}
else
{
glBindBuffer(GL_ARRAY_BUFFER, 0);
glEnableVertexAttribArray(ShaderProgram::VERTEX);
glVertexAttribPointer(ShaderProgram::VERTEX, 3, GL_FLOAT, GL_FALSE, 0, vertexArray);
backgroundShader = oglContext->resourceManager()->getLinkedUnlitColorShaderProgram(oglContext);
if (backgroundShader->useProgram(oglContext))
{
MatrixState projMatrixState(projCam);
backgroundShader->clearUniformApplyTracking();
backgroundShader->applyFixedUniforms(oglContext, projMatrixState);
}
}
Vec3f min(1.0f, 1.0f, 0.0f);
Vec3f max(static_cast<float>(size.x() - 1), static_cast<float>(size.y() - 1), 0.0f);
// Setup the vertex array
float* v1 = &vertexArray[0];
float* v2 = &vertexArray[3];
float* v3 = &vertexArray[6];
float* v4 = &vertexArray[9];
v1[0] = min.x();
v1[1] = min.y();
v1[2] = 0.0f;
v2[0] = max.x();
v2[1] = min.y();
v2[2] = 0.0f;
v3[0] = max.x();
v3[1] = max.y();
v3[2] = 0.0f;
v4[0] = min.x();
v4[1] = max.y();
v4[2] = 0.0f;
if (m_drawBackground)
{
if (software)
{
#ifndef CVF_OPENGL_ES
glColor4fv(m_backgroundColor.ptr());
glBegin(GL_TRIANGLE_FAN);
glVertex3fv(v1);
glVertex3fv(v2);
glVertex3fv(v3);
glVertex3fv(v4);
glEnd();
#endif
}
else
{
// Draw background
UniformFloat backgroundColor("u_color", Color4f(m_backgroundColor));
backgroundShader->applyUniform(oglContext, backgroundColor);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
}
}
if (m_drawBorder)
{
if (software)
{
#ifndef CVF_OPENGL_ES
glColor3fv(m_borderColor.ptr());
glBegin(GL_LINE_LOOP);
glVertex3fv(v1);
glVertex3fv(v2);
glVertex3fv(v3);
glVertex3fv(v4);
glEnd();
#endif
}
else
{
UniformFloat borderColor("u_color", Color4f(m_borderColor));
backgroundShader->applyUniform(oglContext, borderColor);
RenderStateLine line(static_cast<float>(3));
line.applyOpenGL(oglContext);
// Draw border
glDrawArrays(GL_LINE_LOOP, 0, 4);
RenderStateLine resetLine;
resetLine.applyOpenGL(oglContext);
}
}
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void Rendering::calculateOverlayItemLayoutForSchemeAndCorner(OverlayItemRectMap* itemRectMap, OverlayItem::LayoutScheme layoutScheme, OverlayItem::AnchorCorner anchorCorner)
{
CVF_ASSERT(layoutScheme == OverlayItem::HORIZONTAL || layoutScheme == OverlayItem::VERTICAL);
const int border = 3;
const Vec2i vpSize = Vec2i(static_cast<int>(m_camera->viewport()->width()), static_cast<int>(m_camera->viewport()->height()));
const Vec2i vpPos = Vec2i(m_camera->viewport()->x(), m_camera->viewport()->y());
Vec2i cursor(0,0);
switch (anchorCorner)
{
case OverlayItem::TOP_LEFT: cursor.set(border, vpSize.y() - border); break;
case OverlayItem::TOP_RIGHT: cursor.set(vpSize.x() - border, vpSize.y() - border); break;
case OverlayItem::BOTTOM_LEFT: cursor.set(border, border); break;
case OverlayItem::BOTTOM_RIGHT: cursor.set(vpSize.x() - border, border); break;
default: cursor.set(border,border);
}
cursor += vpPos;
// Adjust starting cursor position based on other already placed items in this anchor corner
// The assumption here is that for each corner, the horizontal layout has already been added to the map
if (layoutScheme == OverlayItem::VERTICAL)
{
OverlayItemRectMap::iterator it;
for (it = itemRectMap->begin(); it != itemRectMap->end(); ++it)
{
const OverlayItem* placedItem = it->first;
const Recti placedItemRect = it->second;
if (placedItem->anchorCorner() == anchorCorner && placedItemRect.contains(cursor))
{
if (anchorCorner == OverlayItem::BOTTOM_LEFT || anchorCorner == OverlayItem::BOTTOM_RIGHT)
{
cursor.y() += placedItemRect.height() + border;
}
else
{
cursor.y() -= placedItemRect.height() + border;
}
}
}
}
const size_t numOverlayItems = m_overlayItems.size();
for (size_t i = 0; i < numOverlayItems; i++)
{
OverlayItem* item = m_overlayItems.at(i);
if ((item->anchorCorner() == anchorCorner) && (item->layoutScheme() == layoutScheme))
{
// Find this position and size
Vec2i position = cursor;
Vec2ui size = item->sizeHint();
if ((anchorCorner == OverlayItem::TOP_RIGHT) || (anchorCorner == OverlayItem::BOTTOM_RIGHT))
{
position.x() -= size.x();
}
if ((anchorCorner == OverlayItem::TOP_LEFT) || (anchorCorner == OverlayItem::TOP_RIGHT))
{
position.y() -= size.y();
}
// Store the position in the map
Recti rect(position.x(), position.y(), static_cast<int>(size.x()), static_cast<int>(size.y()));
(*itemRectMap)[item] = rect;
// Find next position, moving the cursor
if (layoutScheme == OverlayItem::HORIZONTAL)
{
if ((anchorCorner == OverlayItem::TOP_LEFT) || (anchorCorner == OverlayItem::BOTTOM_LEFT))
{
cursor.x() += (size.x() + border);
}
else
{
cursor.x() -= (size.x() + border);
}
}
else if (layoutScheme == OverlayItem::VERTICAL)
{
if ((anchorCorner == OverlayItem::BOTTOM_LEFT) || (anchorCorner == OverlayItem::BOTTOM_RIGHT))
{
cursor.y() += (size.y() + border);
}
else
{
cursor.y() -= (size.y() + border);
}
}
else
{
CVF_FAIL_MSG("Unhandled OverlayItem::LayoutDirection");
}
}
}
}