# Rewrite 5
- Move Libraries Source into pd directory and give them all their own CMakeLists.txt - Partial rewrite core (color, autogenerated vec), lithium (now uses UNIQUE PTR for Commands), UI7 - Use MenuV2 as new standart in UI7 - Implementz ViewPort Pre alpha to UI7 - Add Line Drawing to DrawList (not Working) - Implement a Complete new drievrs API (static Drivers) - NO SUPPORT FOR SHARED LIBRARY BUILDS IN VERSION 5 YET - Add Tools to Autogenerate Headers and Stuff
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150
pd/lithium/source/renderer.cpp
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150
pd/lithium/source/renderer.cpp
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/*
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MIT License
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Copyright (c) 2024 - 2025 tobid7
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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#include <pd/lithium/renderer.hpp>
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namespace PD {
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namespace Li {
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PD_LITHIUM_API bool Renderer::InBox(const fvec2& pos, const fvec2& szs,
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const fvec4& rect) {
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return (pos.x + szs.x >= rect.x && pos.y + szs.y >= rect.y &&
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pos.x <= rect.z && pos.y <= rect.w);
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}
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PD_LITHIUM_API bool Renderer::InBox(const fvec2& pos, const fvec4& rect) {
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return (pos.x > rect.x && pos.x < rect.x + rect.z && pos.y > rect.y &&
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pos.y < rect.y + rect.w);
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}
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PD_LITHIUM_API bool Renderer::InBox(const fvec2& alpha, const fvec2& bravo,
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const fvec2& charlie, const fvec4& rect) {
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return ((alpha.x < rect.z && bravo.x < rect.z && charlie.x < rect.z) ||
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(alpha.y < rect.w && bravo.y < rect.w && charlie.y < rect.w) ||
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(alpha.x > 0 && bravo.x > 0 && charlie.x > 0) ||
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(alpha.y > 0 && bravo.y > 0 && charlie.y > 0));
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}
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PD_LITHIUM_API void Renderer::RotateCorner(fvec2& pos, float sinus,
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float cosinus) {
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float x = pos.x * cosinus - pos.y * sinus;
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float y = pos.y * cosinus - pos.x * sinus;
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pos = fvec2(x, y);
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}
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PD_LITHIUM_API Rect Renderer::PrimRect(const fvec2& pos, const fvec2& size,
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float angle) {
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fvec2 c = size * 0.5f; // Center
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fvec2 corner[4] = {
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fvec2(-c.x, -c.y),
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fvec2(-c.x + size.x, -c.y),
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fvec2(-c.x, -c.y + size.y),
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fvec2(-c.x + size.x, -c.y + size.y),
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};
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// Only rotate if required
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if (angle != 0.f) {
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float s = std::sin(angle);
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float co = std::cos(angle);
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for (int i = 0; i < 4; i++) {
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RotateCorner(corner[i], s, co);
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}
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}
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// Return Result
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return Rect(corner[0] + pos + c, corner[1] + pos + c, corner[2] + pos + c,
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corner[3] + pos + c);
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}
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PD_LITHIUM_API Rect Renderer::PrimLine(const fvec2& a, const fvec2& b,
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int thickness) {
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// Using the vec maths api makes the code as short as it is
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vec2 dir = a - b;
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float len = dir.Len();
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vec2 unit_dir = dir / len;
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vec2 perpendicular(-unit_dir.y, unit_dir.x);
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vec2 off = perpendicular * ((float)thickness * 0.5f);
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return Rect(a + off, b + off, a - off, b - off);
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}
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PD_LITHIUM_API void Renderer::CmdQuad(Command* cmd, const Rect& quad,
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const Rect& uv, u32 color) {
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cmd->AddIdx(0).AddIdx(1).AddIdx(2);
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cmd->AddIdx(0).AddIdx(2).AddIdx(3);
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cmd->AddVtx(Vertex(quad.BotRight(), uv.BotRight(), color));
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cmd->AddVtx(Vertex(quad.TopRight(), uv.TopRight(), color));
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cmd->AddVtx(Vertex(quad.TopLeft(), uv.TopLeft(), color));
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cmd->AddVtx(Vertex(quad.BotLeft(), uv.BotLeft(), color));
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}
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PD_LITHIUM_API void Renderer::CmdTriangle(Command* cmd, const fvec2 a,
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const fvec2 b, const fvec2 c,
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u32 clr) {
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cmd->AddIdx(2).AddIdx(1).AddIdx(0);
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cmd->AddVtx(Vertex(a, vec2(0.f, 1.f), clr));
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cmd->AddVtx(Vertex(b, vec2(1.f, 1.f), clr));
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cmd->AddVtx(Vertex(c, vec2(1.f, 0.f), clr));
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}
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// TODO: Don't render OOS (Probably make it with a define as it
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// would probably be faster to render out of screen than checking if
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// it could be skipped)
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PD_LITHIUM_API void Renderer::CmdConvexPolyFilled(Command* cmd,
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const Vec<fvec2>& points,
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u32 clr, Texture::Ref tex) {
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if (points.Size() < 3 || tex == nullptr) {
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return; // Need at least three points
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}
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// Support for Custom Textures (UV calculation)
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float minX = points[0].x, minY = points[0].y;
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float maxX = minX, maxY = minY;
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// Check for the max and min Positions
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for (auto it = points.Begin(); it != points.End(); it++) {
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if ((*it).x < minX) minX = (*it).x;
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if ((*it).y < minY) minY = (*it).y;
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if ((*it).x > maxX) maxX = (*it).x;
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if ((*it).y > maxY) maxY = (*it).y;
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}
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// Get Short defines for UV
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// (Bottom Right is not required)
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auto uv_tl = tex->UV.TopLeft();
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auto uv_tr = tex->UV.TopRight();
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auto uv_bl = tex->UV.BotLeft();
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// Render
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for (int i = 2; i < (int)points.Size(); i++) {
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cmd->AddIdx(0).AddIdx(i).AddIdx(i - 1);
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}
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for (int i = 0; i < (int)points.Size(); i++) {
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// Calculate U and V coords
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float u =
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uv_tl.x + ((points[i].x - minX) / (maxX - minX)) * (uv_tr.x - uv_tl.x);
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float v =
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uv_tl.y + ((points[i].y - minY) / (maxY - minY)) * (uv_bl.y - uv_tl.y);
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cmd->AddVtx(Vertex(points[i], fvec2(u, v), clr));
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}
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}
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} // namespace Li
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} // namespace PD
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