refactor WorldRenderer

2024-11-14 06:04:26 +03:00
parent 42b26707cb
commit f9f4d2037f
5 changed files with 150 additions and 110 deletions
@@ -0,0 +1,109 @@
+#include "GuidesRenderer.hpp"
+
+#include <glm/gtc/matrix_transform.hpp>
+
+#include "graphics/core/Shader.hpp"
+#include "graphics/core/LineBatch.hpp"
+#include "graphics/core/DrawContext.hpp"
+#include "maths/voxmaths.hpp"
+#include "window/Camera.hpp"
+#include "constants.hpp"
+
+void GuidesRenderer::drawBorders(
+    LineBatch& batch, int sx, int sy, int sz, int ex, int ey, int ez
+) {
+    int ww = ex - sx;
+    int dd = ez - sz;
+    /*corner*/ {
+        batch.line(sx, sy, sz, sx, ey, sz, 0.8f, 0, 0.8f, 1);
+        batch.line(sx, sy, ez, sx, ey, ez, 0.8f, 0, 0.8f, 1);
+        batch.line(ex, sy, sz, ex, ey, sz, 0.8f, 0, 0.8f, 1);
+        batch.line(ex, sy, ez, ex, ey, ez, 0.8f, 0, 0.8f, 1);
+    }
+    for (int i = 2; i < ww; i += 2) {
+        batch.line(sx + i, sy, sz, sx + i, ey, sz, 0, 0, 0.8f, 1);
+        batch.line(sx + i, sy, ez, sx + i, ey, ez, 0, 0, 0.8f, 1);
+    }
+    for (int i = 2; i < dd; i += 2) {
+        batch.line(sx, sy, sz + i, sx, ey, sz + i, 0.8f, 0, 0, 1);
+        batch.line(ex, sy, sz + i, ex, ey, sz + i, 0.8f, 0, 0, 1);
+    }
+    for (int i = sy; i < ey; i += 2) {
+        batch.line(sx, i, sz, sx, i, ez, 0, 0.8f, 0, 1);
+        batch.line(sx, i, ez, ex, i, ez, 0, 0.8f, 0, 1);
+        batch.line(ex, i, ez, ex, i, sz, 0, 0.8f, 0, 1);
+        batch.line(ex, i, sz, sx, i, sz, 0, 0.8f, 0, 1);
+    }
+    batch.flush();
+}
+
+void GuidesRenderer::drawCoordSystem(
+    LineBatch& batch, const DrawContext& pctx, float length
+) {
+    auto ctx = pctx.sub();
+    ctx.setDepthTest(false);
+    batch.lineWidth(4.0f);
+    batch.line(0.f, 0.f, 0.f, length, 0.f, 0.f, 0.f, 0.f, 0.f, 1.f);
+    batch.line(0.f, 0.f, 0.f, 0.f, length, 0.f, 0.f, 0.f, 0.f, 1.f);
+    batch.line(0.f, 0.f, 0.f, 0.f, 0.f, length, 0.f, 0.f, 0.f, 1.f);
+    batch.flush();
+
+    ctx.setDepthTest(true);
+    batch.lineWidth(2.0f);
+    batch.line(0.f, 0.f, 0.f, length, 0.f, 0.f, 1.f, 0.f, 0.f, 1.f);
+    batch.line(0.f, 0.f, 0.f, 0.f, length, 0.f, 0.f, 1.f, 0.f, 1.f);
+    batch.line(0.f, 0.f, 0.f, 0.f, 0.f, length, 0.f, 0.f, 1.f, 1.f);
+}
+
+void GuidesRenderer::renderDebugLines(
+    const DrawContext& pctx,
+    const Camera& camera,
+    LineBatch& batch,
+    Shader& linesShader,
+    bool showChunkBorders
+) {
+    DrawContext ctx = pctx.sub(&batch);
+    const auto& viewport = ctx.getViewport();
+    uint displayWidth = viewport.getWidth();
+    uint displayHeight = viewport.getHeight();
+
+    ctx.setDepthTest(true);
+
+    linesShader.use();
+
+    if (showChunkBorders) {
+        linesShader.uniformMatrix("u_projview", camera.getProjView());
+        glm::vec3 coord = camera.position;
+        if (coord.x < 0) coord.x--;
+        if (coord.z < 0) coord.z--;
+        int cx = floordiv(static_cast<int>(coord.x), CHUNK_W);
+        int cz = floordiv(static_cast<int>(coord.z), CHUNK_D);
+
+        drawBorders(
+            batch,
+            cx * CHUNK_W,
+            0,
+            cz * CHUNK_D,
+            (cx + 1) * CHUNK_W,
+            CHUNK_H,
+            (cz + 1) * CHUNK_D
+        );
+    }
+
+    float length = 40.f;
+    glm::vec3 tsl(displayWidth / 2, displayHeight / 2, 0.f);
+    glm::mat4 model(glm::translate(glm::mat4(1.f), tsl));
+    linesShader.uniformMatrix(
+        "u_projview",
+        glm::ortho(
+            0.f,
+            static_cast<float>(displayWidth),
+            0.f,
+            static_cast<float>(displayHeight),
+            -length,
+            length
+        ) * model *
+            glm::inverse(camera.rotation)
+    );
+    drawCoordSystem(batch, ctx, length);
+}