From 7228b2e1a2d0a8399facce3493d71a3569d250d5 Mon Sep 17 00:00:00 2001 From: mattkae Date: Fri, 23 Dec 2022 12:47:10 -0500 Subject: Improved the makefile considerably --- themes/Snowflake.cpp | 141 --------------------------------------------------- 1 file changed, 141 deletions(-) delete mode 100644 themes/Snowflake.cpp (limited to 'themes/Snowflake.cpp') diff --git a/themes/Snowflake.cpp b/themes/Snowflake.cpp deleted file mode 100644 index 1cb056a..0000000 --- a/themes/Snowflake.cpp +++ /dev/null @@ -1,141 +0,0 @@ -#include "Snowflake.h" -#include "Renderer2d.h" -#include "mathlib.h" -#include "list.h" -#include - -const Vector4 snowColor = Vector4(1.0, 0.98, 0.98, 1); - -inline void generateSnowflakeShape(matte::List* vertices, i32 numArms, f32 radius, f32 innerRadius) { - f32 dx = ((2 * PI) / numArms) / 3.0; - for (i32 centerIdx = 0; centerIdx < (3 * numArms); centerIdx+=3) { - f32 degreeStart = dx * centerIdx; - f32 degreeEnd = dx * (centerIdx + 1); - - f32 cosStart = cosf(degreeStart); - f32 cosEnd = cosf(degreeEnd); - - f32 sinStart = sinf(degreeStart); - f32 sinEnd = sinf(degreeEnd); - - Vector2 leftEnd = Vector2(radius * cosStart, radius * sinStart); - Vector2 rightEnd = Vector2(radius * cosEnd, radius * sinEnd); - Vector2 diff = (rightEnd - leftEnd) / 2.0; - Vector2 leftStart = Vector2(-diff.x, -diff.y) + Vector2(innerRadius * cosStart, innerRadius * sinStart); - Vector2 rightStart = diff + Vector2(innerRadius * cosEnd, innerRadius * sinEnd); - - vertices->add({ leftStart, snowColor, Mat4x4() }); - vertices->add({ leftEnd, snowColor, Mat4x4() }); - vertices->add({ rightEnd, snowColor, Mat4x4() }); - vertices->add({ rightEnd, snowColor, Mat4x4() }); - vertices->add({ rightStart, snowColor, Mat4x4() }); - vertices->add({ leftStart, snowColor, Mat4x4() }); - } -} - -inline void initFlake(SnowflakeParticleRenderer* renderer, SnowflakeUpdateData* ud) { - ud->vtxIdx = renderer->vertices.numElements; - generateSnowflakeShape(&renderer->vertices, randomIntBetween(4, 16), randomFloatBetween(8.f, 16.f), randomFloatBetween(2.f, 6.f)); - ud->numVertices = renderer->vertices.numElements - ud->vtxIdx; - ud->velocity = Vector2(randomFloatBetween(-10, 10), randomFloatBetween(-100, -85)); - ud->position = Vector2(randomFloatBetween(0, renderer->xMax), randomFloatBetween(renderer->yMax, renderer->yMax + 256)); -} - -void SnowflakeParticleRenderer::load(SnowflakeLoadParameters params, Renderer2d* renderer) { - spawnIntervalSeconds = params.spawnIntervalSeconds; - numSnowflakes = params.maxSnowflakes; - - updateData = new SnowflakeUpdateData[params.maxSnowflakes]; - - xMax = static_cast(renderer->context->width); - yMax = static_cast(renderer->context->height); - - vertices.deallocate(); - vertices.growDynamically = true; - - // Initialize each snow flake with its shape - for (i32 s = 0; s < numSnowflakes; s++) { - auto ud = &updateData[s]; - initFlake(this, ud); - } - - useShader(renderer->shader); - - glGenVertexArrays(1, &vao); - glBindVertexArray(vao); - - glGenBuffers(1, &vbo); - glBindBuffer(GL_ARRAY_BUFFER, vbo); - glBufferData(GL_ARRAY_BUFFER, vertices.numElements * sizeof(Vertex2D), &vertices.data[0], GL_DYNAMIC_DRAW); - - glEnableVertexAttribArray(renderer->attributes.position); - glVertexAttribPointer(renderer->attributes.position, 2, GL_FLOAT, GL_FALSE, sizeof(Vertex2D), (GLvoid *)0); - - glEnableVertexAttribArray(renderer->attributes.color); - glVertexAttribPointer(renderer->attributes.color, 4, GL_FLOAT, GL_FALSE, sizeof(Vertex2D), (GLvoid *)offsetof(Vertex2D, color)); - - for (i32 idx = 0; idx < 4; idx++) { - i32 offset = (4 * sizeof(f32)) * idx; - glEnableVertexAttribArray(renderer->attributes.vMatrix + idx); - glVertexAttribPointer(renderer->attributes.vMatrix + idx, - 4, - GL_FLOAT, - GL_FALSE, - sizeof(Vertex2D), - (GLvoid *)(offsetof(Vertex2D, vMatrix) + offset)); - //glVertexAttribDivisor(renderer->attributes.vMatrix + idx, 1); - } - - glBindBuffer(GL_ARRAY_BUFFER, 0); - glBindVertexArray(0); -} - -inline void updateFlake(SnowflakeParticleRenderer* renderer, SnowflakeUpdateData* ud, i32 s, f32 dtSeconds, bool addWind) { - if (addWind) ud->velocity += renderer->windSpeed; - ud->position += ud->velocity * dtSeconds; - - Mat4x4 m = Mat4x4().translateByVec2(ud->position); - for (i32 v = ud->vtxIdx; v < (ud->vtxIdx + ud->numVertices); v++) { - renderer->vertices.data[v].vMatrix = m; - } -} - -void SnowflakeParticleRenderer::update(f32 dtSeconds) { - timeUntilNextSpawnSeconds -= dtSeconds; - if (timeUntilNextSpawnSeconds < 0) { - timeUntilNextSpawnSeconds = spawnIntervalSeconds; - } - - bool addWind = false; - timeUntilNextWindSeconds -= dtSeconds; - if (timeUntilNextWindSeconds < 0) { - timeUntilNextWindSeconds = windIntervalSeconds; - windSpeed = Vector2(randomFloatBetween(-10, 10), randomFloatBetween(-10, 0)); - addWind = true; - } - - for (i32 s = 0; s < numSnowflakes; s++) { - SnowflakeUpdateData* ud = &updateData[s]; - updateFlake(this, ud, s, dtSeconds, addWind); - } -} - -void SnowflakeParticleRenderer::render(Renderer2d* renderer) { - setShaderMat4(renderer->uniforms.model, model); - - glBindBuffer(GL_ARRAY_BUFFER, vbo); - glBufferSubData(GL_ARRAY_BUFFER, 0, vertices.numElements * sizeof(Vertex2D), &vertices.data[0]); - - glBindVertexArray(vao); - glDrawArrays(GL_TRIANGLES, 0, vertices.numElements); - glBindVertexArray(0); -} - -void SnowflakeParticleRenderer::unload() { - glDeleteVertexArrays(1, &vao); - glDeleteBuffers(1, &vbo); - vao = 0; - vbo = 0; - vertices.deallocate(); - delete [] updateData; -} -- cgit v1.2.1