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// Copyright (C) 2011 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#pragma version(1)
#pragma rs java_package_name(com.android.modelviewer)
#include "rs_graphics.rsh"
rs_program_vertex gPVBackground;
rs_program_fragment gPFBackground;
rs_allocation gTGrid;
rs_program_store gPFSBackground;
rs_font gItalic;
rs_allocation gTextAlloc;
rs_matrix4x4 gPostureMatrix;
typedef struct MeshInfo {
rs_mesh mMesh;
int mNumIndexSets;
float3 bBoxMin;
float3 bBoxMax;
} MeshInfo_t;
MeshInfo_t *gMeshes;
static float3 gLookAt;
static float gRotateX;
static float gRotateY;
static float gZoom;
static float gLastX;
static float gLastY;
void onActionDown(float x, float y) {
gLastX = x;
gLastY = y;
}
void onActionScale(float scale) {
gZoom *= 1.0f / scale;
gZoom = max(0.1f, min(gZoom, 500.0f));
}
void onActionMove(float x, float y) {
float dx = gLastX - x;
float dy = gLastY - y;
if (fabs(dy) <= 2.0f) {
dy = 0.0f;
}
if (fabs(dx) <= 2.0f) {
dx = 0.0f;
}
gRotateY -= dx;
if (gRotateY > 360) {
gRotateY -= 360;
}
if (gRotateY < 0) {
gRotateY += 360;
}
gRotateX -= dy;
gRotateX = min(gRotateX, 80.0f);
gRotateX = max(gRotateX, -80.0f);
gLastX = x;
gLastY = y;
}
void init() {
gRotateX = 0.0f;
gRotateY = 0.0f;
gZoom = 50.0f;
gLookAt = 0.0f;
rsMatrixLoadIdentity(&gPostureMatrix);
}
void updateMeshInfo() {
rs_allocation allMeshes = rsGetAllocation(gMeshes);
int size = rsAllocationGetDimX(allMeshes);
gLookAt = 0.0f;
float minX, minY, minZ, maxX, maxY, maxZ;
for (int i = 0; i < size; i++) {
MeshInfo_t *info = (MeshInfo_t*)rsGetElementAt(allMeshes, i);
rsgMeshComputeBoundingBox(info->mMesh,
&minX, &minY, &minZ,
&maxX, &maxY, &maxZ);
info->bBoxMin = (minX, minY, minZ);
info->bBoxMax = (maxX, maxY, maxZ);
gLookAt += (info->bBoxMin + info->bBoxMax)*0.5f;
}
gLookAt = gLookAt / (float)size;
}
static void renderAllMeshes() {
rs_allocation allMeshes = rsGetAllocation(gMeshes);
int size = rsAllocationGetDimX(allMeshes);
gLookAt = 0.0f;
float minX, minY, minZ, maxX, maxY, maxZ;
for (int i = 0; i < size; i++) {
MeshInfo_t *info = (MeshInfo_t*)rsGetElementAt(allMeshes, i);
rsgDrawMesh(info->mMesh);
}
}
void drawDescription() {
uint width = rsgGetWidth();
uint height = rsgGetHeight();
int left = 0, right = 0, top = 0, bottom = 0;
rsgBindFont(gItalic);
rsgMeasureText(gTextAlloc, &left, &right, &top, &bottom);
rsgDrawText(gTextAlloc, 2 -left, height - 2 + bottom);
}
int root(void) {
rsgClearColor(1.0f, 1.0f, 1.0f, 1.0f);
rsgClearDepth(1.0f);
rsgBindProgramVertex(gPVBackground);
rs_matrix4x4 proj;
float aspect = (float)rsgGetWidth() / (float)rsgGetHeight();
rsMatrixLoadPerspective(&proj, 30.0f, aspect, 1.0f, 100.0f);
rsgProgramVertexLoadProjectionMatrix(&proj);
rsgBindProgramFragment(gPFBackground);
rsgBindProgramStore(gPFSBackground);
rsgBindTexture(gPFBackground, 0, gTGrid);
rs_matrix4x4 matrix;
rsMatrixLoadIdentity(&matrix);
// Position our models on the screen
rsMatrixTranslate(&matrix, gLookAt.x, gLookAt.y, gLookAt.z - gZoom);
rsMatrixMultiply(&matrix, &gPostureMatrix);
rsMatrixRotate(&matrix, gRotateX, 1.0f, 0.0f, 0.0f);
rsMatrixRotate(&matrix, gRotateY, 0.0f, 1.0f, 0.0f);
rsgProgramVertexLoadModelMatrix(&matrix);
renderAllMeshes();
drawDescription();
return 0;
}
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