X-Git-Url: http://git.localhorst.tv/?a=blobdiff_plain;f=src%2Fgraphics%2Fmesh.cpp;fp=src%2Fgraphics%2Fmesh.cpp;h=4b0f5829d73ed552ff9fc8c4998a77b785425379;hb=3542823a1af7f5063d7cc8da84efa248eb889b8a;hp=0000000000000000000000000000000000000000;hpb=1c2994622a6b73f90cbd3ec9c09ffb4d7724cab4;p=blank.git

diff --git a/src/graphics/mesh.cpp b/src/graphics/mesh.cpp
new file mode 100644
index 0000000..4b0f582
--- /dev/null
+++ b/src/graphics/mesh.cpp
@@ -0,0 +1,171 @@
+#include "BlockMesh.hpp"
+#include "EntityMesh.hpp"
+#include "OutlineMesh.hpp"
+#include "SkyBoxMesh.hpp"
+#include "SpriteMesh.hpp"
+
+#include <algorithm>
+#include <iostream>
+
+
+namespace blank {
+
+void EntityMesh::Update(const Buffer &buf) noexcept {
+#ifndef NDEBUG
+	if (buf.tex_coords.size() < buf.vertices.size()) {
+		std::cerr << "EntityMesh: not enough tex coords!" << std::endl;
+	}
+	if (buf.hsl_mods.size() < buf.vertices.size()) {
+		std::cerr << "BlockMesh: not enough HSL modifiers!" << std::endl;
+	}
+	if (buf.rgb_mods.size() < buf.vertices.size()) {
+		std::cerr << "BlockMesh: not enough RGB modifiers!" << std::endl;
+	}
+	if (buf.normals.size() < buf.vertices.size()) {
+		std::cerr << "EntityMesh: not enough normals!" << std::endl;
+	}
+#endif
+
+	vao.Bind();
+	vao.PushAttribute(ATTRIB_VERTEX, buf.vertices);
+	vao.PushAttribute(ATTRIB_TEXCOORD, buf.tex_coords);
+	vao.PushAttribute(ATTRIB_HSL, buf.hsl_mods);
+	vao.PushAttribute(ATTRIB_RGB, buf.rgb_mods);
+	vao.PushAttribute(ATTRIB_NORMAL, buf.normals);
+	vao.PushIndices(ATTRIB_INDEX, buf.indices);
+}
+
+
+void EntityMesh::Draw() const noexcept {
+	vao.DrawTriangleElements();
+}
+
+
+void BlockMesh::Update(const Buffer &buf) noexcept {
+#ifndef NDEBUG
+	if (buf.tex_coords.size() < buf.vertices.size()) {
+		std::cerr << "BlockMesh: not enough tex coords!" << std::endl;
+	}
+	if (buf.hsl_mods.size() < buf.vertices.size()) {
+		std::cerr << "BlockMesh: not enough HSL modifiers!" << std::endl;
+	}
+	if (buf.rgb_mods.size() < buf.vertices.size()) {
+		std::cerr << "BlockMesh: not enough RGB modifiers!" << std::endl;
+	}
+	if (buf.lights.size() < buf.vertices.size()) {
+		std::cerr << "BlockMesh: not enough lights!" << std::endl;
+	}
+#endif
+
+	vao.Bind();
+	vao.PushAttribute(ATTRIB_VERTEX, buf.vertices);
+	vao.PushAttribute(ATTRIB_TEXCOORD, buf.tex_coords);
+	vao.PushAttribute(ATTRIB_HSL, buf.hsl_mods);
+	vao.PushAttribute(ATTRIB_RGB, buf.rgb_mods);
+	vao.PushAttribute(ATTRIB_LIGHT, buf.lights);
+	vao.PushIndices(ATTRIB_INDEX, buf.indices);
+}
+
+
+void BlockMesh::Draw() const noexcept {
+	vao.DrawTriangleElements();
+}
+
+
+void OutlineMesh::Update(const Buffer &buf) noexcept {
+#ifndef NDEBUG
+	if (buf.colors.size() < buf.vertices.size()) {
+		std::cerr << "OutlineMesh: not enough colors!" << std::endl;
+	}
+#endif
+
+	vao.Bind();
+	vao.PushAttribute(ATTRIB_VERTEX, buf.vertices);
+	vao.PushAttribute(ATTRIB_COLOR, buf.colors);
+	vao.PushIndices(ATTRIB_INDEX, buf.indices);
+}
+
+
+void OutlineMesh::Draw() noexcept {
+	glEnable(GL_LINE_SMOOTH);
+	glLineWidth(2.0f);
+	vao.DrawLineElements();
+}
+
+
+void SkyBoxMesh::LoadUnitBox() {
+	Buffer buffer;
+	buffer.vertices = {
+		{  1.0f,  1.0f,  1.0f },
+		{  1.0f,  1.0f, -1.0f },
+		{  1.0f, -1.0f,  1.0f },
+		{  1.0f, -1.0f, -1.0f },
+		{ -1.0f,  1.0f,  1.0f },
+		{ -1.0f,  1.0f, -1.0f },
+		{ -1.0f, -1.0f,  1.0f },
+		{ -1.0f, -1.0f, -1.0f },
+	};
+	buffer.indices = {
+		5, 7, 3,  3, 1, 5,
+		6, 7, 5,  5, 4, 6,
+		3, 2, 0,  0, 1, 3,
+		6, 4, 0,  0, 2, 6,
+		5, 1, 0,  0, 4, 5,
+		7, 6, 3,  3, 6, 2,
+	};
+	Update(buffer);
+}
+
+void SkyBoxMesh::Update(const Buffer &buf) noexcept {
+	vao.Bind();
+	vao.PushAttribute(ATTRIB_VERTEX, buf.vertices);
+	vao.PushIndices(ATTRIB_INDEX, buf.indices);
+}
+
+void SkyBoxMesh::Draw() const noexcept {
+	vao.DrawTriangleElements();
+}
+
+
+void SpriteMesh::Buffer::LoadRect(
+	float w, float h,
+	const glm::vec2 &pivot,
+	const glm::vec2 &tex_begin,
+	const glm::vec2 &tex_end
+) {
+	Clear();
+	Reserve(4, 6);
+
+	vertices.emplace_back( -pivot.x,  -pivot.y, 0.0f);
+	vertices.emplace_back(w-pivot.x,  -pivot.y, 0.0f);
+	vertices.emplace_back( -pivot.x, h-pivot.y, 0.0f);
+	vertices.emplace_back(w-pivot.x, h-pivot.y, 0.0f);
+
+	coords.emplace_back(tex_begin.x, tex_begin.y);
+	coords.emplace_back(tex_end.x,   tex_begin.y);
+	coords.emplace_back(tex_begin.x, tex_end.y);
+	coords.emplace_back(tex_end.x,   tex_end.y);
+
+	indices.assign({ 0, 2, 1, 1, 2, 3 });
+}
+
+
+void SpriteMesh::Update(const Buffer &buf) noexcept {
+#ifndef NDEBUG
+	if (buf.coords.size() < buf.vertices.size()) {
+		std::cerr << "SpriteMesh: not enough coords!" << std::endl;
+	}
+#endif
+
+	vao.Bind();
+	vao.PushAttribute(ATTRIB_VERTEX, buf.vertices);
+	vao.PushAttribute(ATTRIB_TEXCOORD, buf.coords);
+	vao.PushIndices(ATTRIB_INDEX, buf.indices);
+}
+
+
+void SpriteMesh::Draw() noexcept {
+	vao.DrawTriangleElements();
+}
+
+}