From: David Gow Date: Thu, 5 Jun 2014 09:26:21 +0000 (+0800) Subject: Circles (ellipses) have been added (filled only) X-Git-Url: https://git.ucc.asn.au/?a=commitdiff_plain;h=396b22d11e8041a00b33ca874a5be3853c09d6c0;p=ipdf%2Fcode.git Circles (ellipses) have been added (filled only) --- diff --git a/bin/ipdf b/bin/ipdf index 46b624c..7cd3838 100755 Binary files a/bin/ipdf and b/bin/ipdf differ diff --git a/src/ipdf.h b/src/ipdf.h index 79d25a8..196331d 100644 --- a/src/ipdf.h +++ b/src/ipdf.h @@ -17,7 +17,7 @@ namespace IPDF } typedef unsigned ObjectID; - typedef enum {RECT_FILLED, RECT_OUTLINE} ObjectType; + typedef enum {RECT_FILLED, RECT_OUTLINE, CIRCLE_FILLED} ObjectType; enum DocChunkTypes { diff --git a/src/main.cpp b/src/main.cpp index f2e41b0..58188d9 100644 --- a/src/main.cpp +++ b/src/main.cpp @@ -85,7 +85,7 @@ int main(int argc, char ** argv) { for (int y = 0; y < 8; ++y) { - doc.Add(((x^y)&1)?RECT_OUTLINE:RECT_FILLED, Rect(0.2+x-4.0,0.2+y-4.0,0.6,0.6)); + doc.Add(static_cast((x^y)%3), Rect(0.2+x-4.0,0.2+y-4.0,0.6,0.6)); } } diff --git a/src/view.cpp b/src/view.cpp index 587f1ba..ada42ee 100644 --- a/src/view.cpp +++ b/src/view.cpp @@ -84,6 +84,47 @@ using namespace std; "\tEndPrimitive();\n"\ "}\n" +#define CIRCLE_FILLED_GEOM \ + "#version 150\n"\ + "\n"\ + "layout(lines) in;\n"\ + "layout(triangle_strip, max_vertices = 4) out;\n"\ + "out vec2 objcoords;\n"\ + "\n"\ + "void main()\n"\ + "{\n"\ + "\tgl_Position = gl_in[0].gl_Position;\n"\ + "\tobjcoords = vec2(-1.0, -1.0);\n"\ + "\tEmitVertex();\n"\ + "\tgl_Position = vec4(gl_in[0].gl_Position.x, gl_in[1].gl_Position.y, 0.0, 1.0);\n"\ + "\tobjcoords = vec2(-1.0, 1.0);\n"\ + "\tEmitVertex();\n"\ + "\tgl_Position = vec4(gl_in[1].gl_Position.x, gl_in[0].gl_Position.y, 0.0, 1.0);\n"\ + "\tobjcoords = vec2(1.0, -1.0);\n"\ + "\tEmitVertex();\n"\ + "\tgl_Position = gl_in[1].gl_Position;\n"\ + "\tobjcoords = vec2(1.0, 1.0);\n"\ + "\tEmitVertex();\n"\ + "\tEndPrimitive();\n"\ + "}\n" + +#define CIRCLE_FRAG \ + "#version 140\n"\ + "\n"\ + "in vec2 objcoords;\n"\ + "out vec4 output_colour;\n"\ + "\n"\ + "uniform vec4 colour;\n"\ + "\n"\ + "void main()\n"\ + "{\n"\ + "\tif ((objcoords.x)*(objcoords.x) + (objcoords.y)*(objcoords.y) > 1.0)\n"\ + "\t{\n"\ + "\t\tdiscard;\n"\ + "\t}\n"\ + "\toutput_colour = colour;\n"\ + "}\n" + void View::Translate(Real x, Real y) { x *= m_bounds.w; @@ -221,6 +262,11 @@ void View::Render(int width, int height) m_rect_outline_shader.Use(); m_outline_ibo.Bind(); glDrawElements(GL_LINES, m_rendered_outline*2, GL_UNSIGNED_INT, 0); + + // Filled Circles + m_circle_filled_shader.Use(); + m_circle_ibo.Bind(); + glDrawElements(GL_LINES, m_rendered_circle*2, GL_UNSIGNED_INT, 0); glDisableVertexAttribArray(0); if (m_colour.a < 1.0f) { @@ -294,6 +340,13 @@ void View::PrepareRender() m_rect_filled_shader.Use(); glUniform4f(m_rect_filled_shader.GetUniformLocation("colour"), m_colour.r, m_colour.g, m_colour.b, m_colour.a); + m_circle_filled_shader.AttachGeometryProgram(CIRCLE_FILLED_GEOM); + m_circle_filled_shader.AttachVertexProgram(RECT_VERT); + m_circle_filled_shader.AttachFragmentProgram(CIRCLE_FRAG); + m_circle_filled_shader.Link(); + m_circle_filled_shader.Use(); + glUniform4f(m_circle_filled_shader.GetUniformLocation("colour"), m_colour.r, m_colour.g, m_colour.b, m_colour.a); + m_bounds_ubo.SetType(GraphicsBuffer::BufferTypeUniform); m_bounds_ubo.SetUsage(GraphicsBuffer::BufferUsageStreamDraw); @@ -307,27 +360,38 @@ void View::PrepareRender() m_filled_ibo.Resize(m_document.ObjectCount() * 2 * sizeof(uint32_t)); BufferBuilder filled_builder(m_filled_ibo.Map(false, true, true), m_filled_ibo.GetSize()); + m_circle_ibo.SetUsage(GraphicsBuffer::BufferUsageStaticDraw); + m_circle_ibo.SetType(GraphicsBuffer::BufferTypeIndex); + m_circle_ibo.Resize(m_document.ObjectCount() * 2 * sizeof(uint32_t)); + BufferBuilder circle_builder(m_circle_ibo.Map(false, true, true), m_circle_ibo.GetSize()); - m_rendered_filled = m_rendered_outline = 0; + m_rendered_filled = m_rendered_outline = m_rendered_circle = 0; uint32_t currentIndex = 0; for (unsigned id = 0; id < m_document.ObjectCount(); ++id) { - if (m_document.m_objects.types[id] != RECT_FILLED) + if (m_document.m_objects.types[id] == RECT_OUTLINE) { outline_builder.Add(currentIndex++); outline_builder.Add(currentIndex++); m_rendered_outline++; } - else + else if (m_document.m_objects.types[id] == RECT_FILLED) { filled_builder.Add(currentIndex++); filled_builder.Add(currentIndex++); m_rendered_filled++; } + else + { + circle_builder.Add(currentIndex++); + circle_builder.Add(currentIndex++); + m_rendered_circle++; + } } m_outline_ibo.UnMap(); m_filled_ibo.UnMap(); + m_circle_ibo.UnMap(); m_render_inited = true; } diff --git a/src/view.h b/src/view.h index 344c560..9e3017c 100644 --- a/src/view.h +++ b/src/view.h @@ -41,6 +41,7 @@ namespace IPDF bool m_render_inited; ShaderProgram m_rect_outline_shader; ShaderProgram m_rect_filled_shader; + ShaderProgram m_circle_filled_shader; // Stores the view bounds. GraphicsBuffer m_bounds_ubo; // Stores the bounds for _all_ objects. @@ -48,12 +49,14 @@ namespace IPDF // Stores indices into the objbounds vbo for each type of object. GraphicsBuffer m_outline_ibo; // Rectangle outline GraphicsBuffer m_filled_ibo; // Filled rectangle + GraphicsBuffer m_circle_ibo; // Filled circle FrameBuffer m_cached_display; Document & m_document; Rect m_bounds; Colour m_colour; uint32_t m_rendered_filled; uint32_t m_rendered_outline; + uint32_t m_rendered_circle; }; }