Ejemplo n.º 1
0
void Tank::draw()
{
    node()->clear();
    node()->drawSegment(
        _gunBegin,
        _gunBegin + _gunLength * Vec2::forAngle(CC_DEGREES_TO_RADIANS(_angle)),
        1, uniformColor()
    );
    node()->drawSolidPoly(_base, sizeof(_base)/sizeof(*_base), colorFilter(Color4F::WHITE));
    node()->drawSolidPoly(_head, sizeof(_head)/sizeof(*_head), uniformColor());
}
Ejemplo n.º 2
0
void DropCapsid::draw()
{
    node()->clear();
    float r = _size / 2;
    node()->drawSolidCircle(Vec2::ZERO, r, 0, 12, colorFilter(Color4F::WHITE));
    node()->drawSolidRect(
        Vec2(-r/10, -9*r/10),
        Vec2( r/10,  9*r/10),
        uniformColor()
    );
    node()->drawSolidRect(
        Vec2(-9*r/10, -r/10),
        Vec2( 9*r/10,  r/10),
        uniformColor()
    );
}
Ejemplo n.º 3
0
void SpaceStation::draw()
{
    node()->clear();
    float r = _size / 2;
    Color4F darkGray = colorFilter(Color4F(0.3f, 0.3f, 0.3f, 1.0f));
    node()->drawSolidCircle(Vec2::ZERO, r*1.05, 0, 12, darkGray);
    node()->drawSolidCircle(Vec2::ZERO, r, 0, 12, colorFilter(Color4F::GRAY));
    node()->drawSolidRect(
        Vec2(-7*r/10, 4*r/10),
        Vec2( 7*r/10, 6*r/10),
        darkGray
    );
    node()->drawTriangleGradient(
        Vec2(-7*r/10, -6*r/10),
        Vec2( 7*r/10, -6*r/10),
        Vec2(      0,  r),
        colorFilter(Color4F::GRAY), colorFilter(Color4F::GRAY), uniformColor()
    );
}
Ejemplo n.º 4
0
//--------------------------------------------------------------------------------------------------
/// Draw the legend using shader programs
//--------------------------------------------------------------------------------------------------
void OverlayColorLegend::renderLegend(OpenGLContext* oglContext, OverlayColorLegendLayoutInfo* layout, const MatrixState& matrixState)
{
    CVF_CALLSITE_OPENGL(oglContext);

    CVF_TIGHT_ASSERT(layout);
    CVF_TIGHT_ASSERT(layout->size.x() > 0);
    CVF_TIGHT_ASSERT(layout->size.y() > 0);

    Depth depth(false);
    depth.applyOpenGL(oglContext);

    // All vertices. Initialized here to set Z to zero once and for all.
    static float vertexArray[] = 
    {
        0.0f, 0.0f, 0.0f,
        0.0f, 0.0f, 0.0f,
        0.0f, 0.0f, 0.0f,
        0.0f, 0.0f, 0.0f,
        0.0f, 0.0f, 0.0f
    };

    // Per vector convenience pointers
    float* v0 = &vertexArray[0]; 
    float* v1 = &vertexArray[3]; 
    float* v2 = &vertexArray[6]; 
    float* v3 = &vertexArray[9]; 
    float* v4 = &vertexArray[12];

    // Constant coordinates
    v0[0] = v3[0] = layout->x0;
    v1[0] = v4[0] = layout->x1;

    // Connects
    static const ushort trianglesConnects[] = { 0, 1, 4, 0, 4, 3 };

    ref<ShaderProgram> shaderProgram = oglContext->resourceManager()->getLinkedUnlitColorShaderProgram(oglContext);
    CVF_TIGHT_ASSERT(shaderProgram.notNull());

    if (shaderProgram->useProgram(oglContext))
    {
        shaderProgram->clearUniformApplyTracking();
        shaderProgram->applyFixedUniforms(oglContext, matrixState);
    }

    glBindBuffer(GL_ARRAY_BUFFER, 0);
    glEnableVertexAttribArray(ShaderProgram::VERTEX);
    glVertexAttribPointer(ShaderProgram::VERTEX, 3, GL_FLOAT, GL_FALSE, 0, vertexArray);

    // Render color bar as one colored quad per pixel

    int legendHeightPixelCount = static_cast<int>(layout->tickPixelPos->get(m_tickValues.size()-1) - layout->tickPixelPos->get(0) + 0.01);
    if (m_scalarMapper.notNull())
    {
        int iPx;
        for (iPx = 0; iPx < legendHeightPixelCount; iPx++)
        {
            const Color3ub& clr = m_scalarMapper->mapToColor(m_scalarMapper->domainValue((iPx+0.5)/legendHeightPixelCount));
            float y0 = static_cast<float>(layout->legendRect.min().y() + iPx);
            float y1 = static_cast<float>(layout->legendRect.min().y() + iPx + 1);

            // Dynamic coordinates for rectangle
            v0[1] = v1[1] = y0;
            v3[1] = v4[1] = y1;

            // Draw filled rectangle elements
            {
                UniformFloat uniformColor("u_color", Color4f(Color3f(clr)));
                shaderProgram->applyUniform(oglContext, uniformColor);

#ifdef CVF_OPENGL_ES
                glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, trianglesConnects);
#else
                glDrawRangeElements(GL_TRIANGLES, 0, 4, 6, GL_UNSIGNED_SHORT, trianglesConnects);
#endif
            }
        }
    }

    // Render frame

    // Dynamic coordinates for  tickmarks-lines
    bool isRenderingFrame = true;
    if (isRenderingFrame)
    {
        v0[0] = v2[0] = layout->legendRect.min().x()-0.5f;
        v1[0] = v3[0] = layout->legendRect.max().x()-0.5f;
        v0[1] = v1[1] = layout->legendRect.min().y()-0.5f;
        v2[1] = v3[1] = layout->legendRect.max().y()-0.5f;
        static const ushort frameConnects[] = { 0, 1, 1, 3, 3, 2, 2, 0};

        UniformFloat uniformColor("u_color", Color4f(m_color));
        shaderProgram->applyUniform(oglContext, uniformColor);

#ifdef CVF_OPENGL_ES
        glDrawElements(GL_LINES, 8, GL_UNSIGNED_SHORT, frameConnects);
#else
        glDrawRangeElements(GL_LINES, 0, 3, 8, GL_UNSIGNED_SHORT, frameConnects);
#endif
    }

    // Render tickmarks
    bool isRenderingTicks = true;

    if (isRenderingTicks)
    {
        // Constant coordinates
        v0[0] = layout->x0;
        v1[0] = layout->x1 - 0.5f*(layout->tickX - layout->x1) - 0.5f;
        v2[0] = layout->x1;
        v3[0] = layout->tickX - 0.5f*(layout->tickX - layout->x1) - 0.5f;
        v4[0] = layout->tickX;

        static const ushort tickLinesWithLabel[] = { 0, 4 };
        static const ushort tickLinesWoLabel[] = { 2, 3 };

        size_t ic;
        for (ic = 0; ic < m_tickValues.size(); ic++)
        {
                float y0 = static_cast<float>(layout->legendRect.min().y() + layout->tickPixelPos->get(ic) - 0.5f);

                // Dynamic coordinates for  tickmarks-lines
                v0[1] = v1[1] = v2[1] = v3[1] = v4[1] = y0;

                UniformFloat uniformColor("u_color", Color4f(m_color));
                shaderProgram->applyUniform(oglContext, uniformColor);
                const ushort * linesConnects;

                if ( m_visibleTickLabels[ic])
                {
                    linesConnects = tickLinesWithLabel;
                }
                else
                {
                    linesConnects = tickLinesWoLabel;
                }

#ifdef CVF_OPENGL_ES
                glDrawElements(GL_LINES, 2, GL_UNSIGNED_SHORT, linesConnects);
#else
                glDrawRangeElements(GL_LINES, 0, 4, 2, GL_UNSIGNED_SHORT, linesConnects);
#endif
        }
    }

    glDisableVertexAttribArray(ShaderProgram::VERTEX);

    CVF_TIGHT_ASSERT(shaderProgram.notNull());
    shaderProgram->useNoProgram(oglContext);

    // Reset render states
    Depth resetDepth;
    resetDepth.applyOpenGL(oglContext);

    CVF_CHECK_OGL(oglContext);
}
//--------------------------------------------------------------------------------------------------
/// Render a semi transparent background frame
//--------------------------------------------------------------------------------------------------
void InternalLegendRenderTools::renderBackgroundUsingShaders(OpenGLContext* oglContext,
                                                     const MatrixState& matrixState,
                                                     const Vec2f& size,
                                                     const Color4f& backgroundColor,
                                                     const Color4f& backgroundFrameColor)
{
    CVF_CALLSITE_OPENGL(oglContext);

    RenderStateDepth depth(false);
    depth.applyOpenGL(oglContext);

    RenderStateLine line(1.0f);
    line.applyOpenGL(oglContext);

    RenderStateBlending blend;
    blend.configureTransparencyBlending();
    blend.applyOpenGL(oglContext);

    // Shader program

    ref<ShaderProgram> shaderProgram = oglContext->resourceManager()->getLinkedUnlitColorShaderProgram(oglContext);
    CVF_TIGHT_ASSERT(shaderProgram.notNull());

    if (shaderProgram->useProgram(oglContext))
    {
        shaderProgram->clearUniformApplyTracking();
        shaderProgram->applyFixedUniforms(oglContext, matrixState);
    }

    std::array<Vec3f, 4> vertexArray ={
        Vec3f(1       ,        1, 0.0f),
        Vec3f(size.x(),        1, 0.0f),
        Vec3f(size.x(), size.y(), 0.0f),
        Vec3f(1       , size.y(), 0.0f),
    };


    glBindBuffer(GL_ARRAY_BUFFER, 0);
    glEnableVertexAttribArray(ShaderProgram::VERTEX);
    glVertexAttribPointer(ShaderProgram::VERTEX, 3, GL_FLOAT, GL_FALSE, 0, vertexArray.data());

    // Draw frame background

    UniformFloat backgroundColorUniform("u_color", backgroundColor);
    shaderProgram->applyUniform(oglContext, backgroundColorUniform);

    // Triangle indices for the frame background

    static const ushort backgroundTriangleIndices[] = { 0, 1, 2,  2, 3, 0};

    glDrawRangeElements(GL_TRIANGLES, 0, 3, 6, GL_UNSIGNED_SHORT, backgroundTriangleIndices);


    // Draw frame border lines

    UniformFloat uniformColor("u_color", backgroundFrameColor);
    shaderProgram->applyUniform(oglContext, uniformColor);

    static const ushort frameLineIndices[] = { 0, 1,
                                               1, 2,
                                               2, 3,
                                               3, 0 };

    glDrawRangeElements(GL_LINES, 0, 3, 8, GL_UNSIGNED_SHORT, frameLineIndices);

    glDisableVertexAttribArray(ShaderProgram::VERTEX);

    CVF_TIGHT_ASSERT(shaderProgram.notNull());
    shaderProgram->useNoProgram(oglContext);

    // Reset render states
    RenderStateDepth resetDepth;
    resetDepth.applyOpenGL(oglContext);

    RenderStateLine resetLine;
    resetLine.applyOpenGL(oglContext);

    RenderStateBlending resetblend;
    resetblend.applyOpenGL(oglContext);

    CVF_CHECK_OGL(oglContext);
}