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// This file is part of the 64k demo project.
// It implements the Hybrid3DEffect.
#include "gpu/effects/hybrid_3d_effect.h"
#include "generated/assets.h"
#include "util/asset_manager.h"
#include <cassert>
#include <cmath>
#include <iostream>
Hybrid3DEffect::Hybrid3DEffect(WGPUDevice device, WGPUQueue queue,
WGPUTextureFormat format)
: Effect(device, queue) {
(void)format; // Passed to base, not directly used here.
}
void Hybrid3DEffect::resize(int width, int height) {
width_ = width;
height_ = height;
renderer_.resize(width_, height_);
}
void Hybrid3DEffect::init(MainSequence* demo) {
(void)demo;
WGPUTextureFormat format =
demo->format; // Get current format from MainSequence (might be different
// than constructor if resized)
renderer_.init(device_, queue_, format);
renderer_.resize(width_, height_);
// Texture Manager
texture_manager_.init(device_, queue_);
// Load Noise Asset
size_t size = 0;
const uint8_t* noise_data = GetAsset(AssetId::ASSET_NOISE_TEX, &size);
if (noise_data && size == 256 * 256 * 4) {
texture_manager_.create_texture("noise", 256, 256, noise_data);
renderer_.set_noise_texture(texture_manager_.get_texture_view("noise"));
} else {
std::cerr << "Failed to load NOISE_TEX asset." << std::endl;
}
// Setup Scene
scene_.clear();
Object3D center(ObjectType::BOX); // Use BOX for bumps
center.position = vec3(0, 0, 0);
center.color = vec4(1, 0, 0, 1);
scene_.add_object(center);
for (int i = 0; i < 8; ++i) {
ObjectType type = ObjectType::SPHERE;
if (i % 3 == 1)
type = ObjectType::TORUS;
if (i % 3 == 2)
type = ObjectType::BOX;
Object3D obj(type);
float angle = (i / 8.0f) * 6.28318f;
obj.position = vec3(std::cos(angle) * 4.0f, 0, std::sin(angle) * 4.0f);
obj.scale = vec3(0.7f, 0.7f, 0.7f); // Increased scale by 40%
if (type == ObjectType::SPHERE)
obj.color = vec4(0, 1, 0, 1);
else if (type == ObjectType::TORUS)
obj.color = vec4(0, 0.5, 1, 1);
else
obj.color = vec4(1, 1, 0, 1);
scene_.add_object(obj);
}
}
// Cubic ease-in/out function for non-linear motion
static float ease_in_out_cubic(float t) {
t *= 2.0f;
if (t < 1.0f) {
return 0.5f * t * t * t;
}
t -= 2.0f;
return 0.5f * (t * t * t + 2.0f);
}
void Hybrid3DEffect::render(WGPURenderPassEncoder pass, float time, float beat,
float intensity, float aspect_ratio) {
// Animate Objects
for (size_t i = 1; i < scene_.objects.size(); ++i) {
scene_.objects[i].rotation =
quat::from_axis(vec3(0, 1, 0), time * 2.0f + i);
scene_.objects[i].position.y = std::sin(time * 3.0f + i) * 1.5f;
}
// Camera jumps every other pattern (2 seconds) for dramatic effect
int pattern_num = (int)(time / 2.0f);
int camera_preset = pattern_num % 4; // Cycle through 4 different angles
vec3 cam_pos, cam_target;
switch (camera_preset) {
case 0: // High angle, orbiting
{
float angle = time * 0.5f;
cam_pos = vec3(std::sin(angle) * 12.0f, 8.0f, std::cos(angle) * 12.0f);
cam_target = vec3(0, 0, 0);
}
break;
case 1: // Low angle, close-up
{
float angle = time * 0.3f + 1.57f; // Offset angle
cam_pos = vec3(std::sin(angle) * 6.0f, 2.0f, std::cos(angle) * 6.0f);
cam_target = vec3(0, 1, 0);
}
break;
case 2: // Side view, sweeping
{
float sweep = std::sin(time * 0.4f) * 10.0f;
cam_pos = vec3(sweep, 5.0f, 8.0f);
cam_target = vec3(0, 0, 0);
}
break;
case 3: // Top-down, rotating
{
float angle = time * 0.6f;
cam_pos = vec3(std::sin(angle) * 5.0f, 12.0f, std::cos(angle) * 5.0f);
cam_target = vec3(0, 0, 0);
}
break;
}
camera_.set_look_at(cam_pos, cam_target, vec3(0, 1, 0));
camera_.aspect_ratio = aspect_ratio;
// Draw
renderer_.draw(pass, scene_, camera_, time);
}
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